Data Replication Manager
HSG80 ACS Version 8.5P
Operations Guide for Novell NetWare Version 5.1
First Edition (April 2001)
Part Number: EK-DRMNN-OA. A01
Compaq Computer Corporation
2001 Compaq Computer Corporation.
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with FAR 12.211 and 12.212, Commercial Computer Software, Computer Software Documentation, and Technical
Data for Commercial Items are licensed to the U.S. Government under vendor's standard commercial license.
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for Compaq products are set forth in the express limited warranty statements accompanying such products. Nothing
herein should be construed as constituting an additional warranty.
Com paq service tool software, including associated documentation, is the property of and contains confidential
technology of Compaq Computer Corporation. Service customer is hereby licensed to use the software only for
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software or make the software or any resultant diagnosis or system management data available to other parties
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Compaq's or its service provider's option, destroy or return the software and associated documentation in its
possession.
Printed in the U.S.A.
Data Replication Manager HSG80 ACS Version 8.5P
Operations Guide for Novell NetWare Version 5.1
First Edition (April 2001)
Part Number: EK-DRMNN-OA. A01
Contents
About This Guide
Getting Help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Compaq Website . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Compaq Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
Electrostatic Discharge Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
Component Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Special Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Text Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
Data Replication Manager Solution Kit for Novell NetWare . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
Chapter 1
Introduction to Data Replication Manager
Data Replication Manager Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Peer-to-Peer Remote Copy Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Hardware Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Hardware Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cabinet Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
ESA12000 Storage Cabinet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
EMA12000 Modular Storage Cabinet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Fibre Channel Gigabit Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Gigabit Interface Converters (GBIC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Power Distribution Unit (PDU). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Fully-Redundant Power (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Host Bus Adapters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Hardware Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
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Software Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Array Controller Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
StorageWorks Command Console (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Required Hardware and Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Chapter 2
Remote Copy Set Features
Remote Copy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Remote Copy Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Non-Remote Copy Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Operation Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Synchronous Operation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Asynchronous Operation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Operation Mode Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Outstan ding_IO Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Synchronous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Asynchronous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Outstanding Write Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
High Outstanding I/O Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Low Outstanding I/O Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Suspend/Resume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Error Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Association Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Association Set Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
FAIL_ALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Write History Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Mini-merge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Fast-Failback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Log Unit Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Log Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
ORDER_ALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Planned Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Unplanned Failover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Failback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Chapter 3
Getting Started
Site, Host, and Solution Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Host Bus Adapter Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Setting Up the Fibre Channel Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
v
Setting Up the Fiber Optic Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Host-to-Switch Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Switch-to-Controller Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Chapter 4
Configuring a Data Replication Manager Solution
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Configuration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Configuration Procedures Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Target Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Initiator Site. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Configure the Controllers at the Target Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Example Display 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Example Display 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Example Display 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
Example Display 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
Example Display 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412
Example Display 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412
Example Display 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413
Example Display 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
Configure Storage at the Target Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
Devices and StorageSets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
Creating Storage Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
Example Display 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
Cabling the Target Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416
Connect Fiber Optic Cables Between the Controllers and Fiber Channel Switches . . . . . 416
Connect the Target Site to the External Fiber Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 417
Long Wave GBICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418
Other Transport Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418
Configure the Host at the Target Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 419
Install the Host Bus Adapters and Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 419
Install Secure Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 419
Install SWCC (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420
Connect Fiber Optic Cables Between the Hosts and the Switches . . . . . . . . . . . . . . . . . . 420
Connecting the Fiber Optic Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420
Example Display 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421
Rename the Host Connections at the Target Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 422
Example Display 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423
Configure the Controllers at the Initiator Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423
Controller Configuration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423
vi Data Replication Manager HSG80 ACS Version 8.5P Operations Guide for Novell NetWare Version 5.1
Example Display 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424
Example Display 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426
Example Display 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426
Example Display 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 427
Example Display 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 429
Example Display 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 430
Example Display 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 430
Example Display 19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 431
Configure Storage at the Initiator Site. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 432
Devices and StorageSets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 432
Creating Storage Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 432
Example Display 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433
Cabling the Initiator Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 434
Connect Fiber Optic Cables Between the Controllers and Fibre Channel Switches . . . . . . 434
Connect the Initiator Site to the External Fiber Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435
Long Wave GBICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435
Other Transport Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435
Create Remote Copy Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 436
Prepare the Initiator Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 436
Create Connections From the Target Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 437
Create RCS from the Initiator Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 437
Example Display 21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 438
Set Failsafe at the Initiator Site (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 439
Creating Log Units and Association Sets (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 439
Creating a Log Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 439
Example Display 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440
Example Display 23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440
Creating Association Sets and Assigning a Log Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 441
Example Display 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 441
Example Display 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442
Configure the Host at the Initiator Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443
Install the Host Bus Adapters and Drivers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443
Install Secure Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443
Install SWCC (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444
Connecting Fiber Optic Cables Between the Hosts and the Switches . . . . . . . . . . . . . . . . . 444
Connecting the Fiber Optic Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444
Example Display 26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 446
Rename the Host Connections at the Initiator Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 447
Example Display 27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 448
Enable Access to the Hosts at the Initiator Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 449
Install NetWare Cluster Services (NWCS) Version 1.01 (Optional) . . . . . . . . . . . . . . . . . . . . . 450
Document Your Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450
vii
Terminal Emulator Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450
SHOW Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450
Example Display 28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 451
Example Display 29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 452
Example Display 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 453
Example Display 31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 454
Example Display 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 454
Chapter 5
Managing Site Failover and Failback Procedures
Power Up Data Replication Manager Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Target Site Powerup Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Initiator Site Powerup Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Power Down Data Replication Manager Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Initiator Site Power Down Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Target Site Power Down Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Site Failover Basic Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Failback Procedure Choices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Data Replication Manager Configuration Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Planning Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Planned Failover Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Initiator Site Preparation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Target Site Failover Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 510
Target Host Setup Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 511
Simple Failback Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 512
Initiator Site Failback Preparation Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 512
Target Site Simple Failback Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 513
Initiator Site Cleanup Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 514
Unplanned Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 516
Target Site Failover Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 516
Full Failback Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 518
Initiator Site Preparation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 518
Target Site Preparation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 520
Initiator Site Connections Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 521
Target Site Copy Data Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 521
Initiator Site Return Control Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 522
Target Site Restore Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 522
Initiator Site Restoration of Target Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 523
New Hardware Failback Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 525
Initiator Site Preparation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 525
Target Site Preparation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 527
viii Data Replication Manager HSG80 ACS Version 8.5P Operations Guide for Novell NetWare Version 5.1
Initiator Site Connections Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 528
Target Site Copy Data Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 528
Initiator Site Return Control Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 529
Target Site Restore Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 529
Initiator Site Restoration of Target Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 530
Chapter 6
Troubleshooting
HSG80 Array Controller Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Forced Errors Detected During Copy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Read Errors Detected During Full Copy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Dual Redundancy During Failback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Failsafe Lock Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Link Failure Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Remote Copy Set Member Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Remote Copy Set Worldwide LUN ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Write History Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Component Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Failure Notification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
HSG80 Array Controller Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
SWCC Failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Failure of One Member in a Dual Redundant Controller Pair . . . . . . . . . . . . . . . . . . . . 65
Failure of Both Fiber Optic Cables or Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Failure Modes of a DT System In Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Failure at Target Site after Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Chapter 7
Configuration Variations
Cascaded Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Hopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Cascaded Switches Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Multiple Intersite Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
DataSafe Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
DataSafe Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
DataSafe Configuration Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Switch Zoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
SAN Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Zone Membership . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Resource Partitioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 710
Data Security. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 710
Homogeneous Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 711
ix
Zoning Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 712
Planning Considerations for Homogeneous Configurations That Require Zoning. . . . . . . . . . 713
Windows 2000 Using Secure Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 713
More than 64 Host Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 713
Prevent Host Bus Adaptor (HBA) from Seeing All Active Host Ports . . . . . . . . . . . . . . . 714
Zoning A DRM Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 714
Zoning the Green Zone_Top and Green Zone_Bottom (Example) . . . . . . . . . . . . . . . . . . 718
Zoning the Blue Zone_Top and Blue Zone_Bottom (Example) . . . . . . . . . . . . . . . . . . . . 721
Zoning the Red Zone_Top and Red Zone_Bottom (Example) . . . . . . . . . . . . . . . . . . . . . 724
Create the Zone Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 726
Create the Configuration Name. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 727
SHOW Command Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 728
switchShow command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 728
fabricShow command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 730
uRouteShow command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 731
topologyShow command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 731
nsShow command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 732
nsAllShow command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 733
errShow command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 734
Appendix A
Status Comparison
Target Site Terminal Emulator Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1
Issuing SHOW Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A2
Example Display 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A3
Example Display 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A4
Example Display 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A4
Example Display 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A5
Example Display 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A5
Appendix B
Replicating Storage Units
Cloning Data for Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B3
Snapshot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B7
Snapshot Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B8
Glossary
Index
x DataData Replication Manager HSG80 ACS Version 8.5P Operations Guide for Novell NetWare Version 5.1
Figures
Figure 11. ESA12000 storage building block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 12. Additional components for ESA12000 Data Replication Manager . . . . . . . . . . . . . 16
Figure 13. Components for EMA12000 modular storage Data Replication Manager. . . . . . . . 18
Figure 14. Fibre Channel SAN Switch 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 15. Fibre Channel SAN Switch 8-EL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 16. Fibre Channel-based, ESA12000 DT storage subsystem
(with fully-redundant power). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Figure 17. Fibre Channel-based, EMA12000 DT modular storage subsystem
(with fully-redundant power). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Figure 21. Remote copy set operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 22. Location of association sets on the initiator controller pair . . . . . . . . . . . . . . . . . . . 27
Figure 31. Locations and names of components for connecting fiber optic lines . . . . . . . . . . . 34
Figure 41. Data Replication Manager basic configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 42. Switch port locations on a Fibre Channel switch . . . . . . . . . . . . . . . . . . . . . . . . . . 417
Figure 43. Cabling between the controllers and switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418
Figure 44. Cabling from the target site to the initiator site . . . . . . . . . . . . . . . . . . . . . . . . . . . 419
Figure 45. Cabling between the hosts and the switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 422
Figure 46. Host renaming worksheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423
Figure 47. Port locations on the Fibre Channel switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435
Figure 48. Cabling between the controllers and Fibre Channel switches . . . . . . . . . . . . . . . . 436
Figure 49. Cabling from the initiator site to the target site . . . . . . . . . . . . . . . . . . . . . . . . . . . 437
Figure 410. Cabling between the hosts and the switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 446
Figure 411. Data Replication Manager cabling at initiator and target sites. . . . . . . . . . . . . . . 447
Figure 412. Host renaming worksheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 449
Figure 51. Data Replication Manager basic configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Figure 71. Cascaded switches in DRM environment, with 0 hops from host,
and 3 hops to controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
xi
Figure 72. Cascaded switches in DRM environment, with 3 hops from host,
and 3 hops to controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Figure 73. Multiple intersite links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Figure 74. DataSafe (firewall) configuration in DRM environment . . . . . . . . . . . . . . . . . . . . 78
Figure 75. Zoning in homogeneous environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 712
Figure 76. Zoning in a DRM homogeneous environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 716
Figure 77. Blank zoning input form (template) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 717
Figure 78. Zoning a DRM example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 718
Figure 79. Green Zone_Top and Green Zone_Bottom input form. . . . . . . . . . . . . . . . . . . . . 719
Figure 710. Blue Zone_Top and Blue Zone_Bottom input form . . . . . . . . . . . . . . . . . . . . . . 722
Figure 711. Red Zone_Top and Red Zone_Bottom input form . . . . . . . . . . . . . . . . . . . . . . . 725
Figure B1. Steps the CLONE utility follows for duplicating unit members . . . . . . . . . . . . . . B4
Figure B2. Snapshot unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B7
xii Data Replication Manager HSG80 ACS Version 8.5P Operations Guide for Novell NetWare Version 5.1
Tables
Table 11 ESA12000 Storage Cabinet Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 12 EMA12000 Modular Storage Cabinet Components . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 21 Data Replication Manager Switch Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Table 31 Overview of Required Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 41 Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 51 Failover Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Table 61 Failure Modes of a DT System with Normal Operation . . . . . . . . . . . . . . . . . . . . . . . 66
Table 62 Target Site DT Failure Modes After Failover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Table 71 DRM Hop Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Table 72 Multiple Intersite Link Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Table 73 Zoning Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 713
Table 74 Zoning Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 713
Table B1 Cloning and Snapshot Comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B2
About This Guide
This guide describes the Data Replication Manager and how to use it during a
failover/failback situation running on the HSG80 Array Controller.
See the documentation that accompanied the subsystem for detailed information about
subsystem enclosures and their components.
Getting Help
If you have a problem and cannot find the information you need to resolve it in this guide,
you can get further information and other help in the following locations:
Compaq Website
The Compaq website has information on this product as well as the latest drivers and Flash
ROM images. You can access the Compaq website by logging on to the Internet at:
http://www.compaq.com/storage
Compaq Technical Support
Use the following to connect with Compaq technical support:
s United States and Canada, call 1-800-652-6672
s Outside the United States and Canada, visit the Compaq website at:
http://www.compaq.com/storage
xiv Data Replication Manager HSG80 ACS Version 8.5P Operations Guide for Novell NetWare Version 5.1
Precautions
Follow the precautions listed in the sections "Electrostatic Discharge Precautions" and
"Component Precautions" when carrying out the procedures outlined in this guide.
Electrostatic Discharge Precautions
Static electricity collects on all nonconducting material, such as paper, cloth, and plastic.
An electrostatic discharge (ESD) can easily damage a controller or other subsystem
component, even though you may not see or feel the discharge. Follow these precautions
whenever you're servicing a subsystem or one of its components:
s Always use an ESD wrist strap when servicing the controller or other components in
the subsystem. Make sure that the strap contacts bare skin and fits snugly, and that its
grounding lead is attached to a bus that is a verified earth ground.
s Before touching any circuit board or component, always touch a verifiable earth
ground to discharge any static electricity that may be present in your clothing.
s Always keep circuit boards and components away from nonconducting material.
s Always keep clothing away from circuit boards and components.
s Always use antistatic bags and grounding mats for storing circuit boards or
components during replacement procedures.
s Always keep the ESD cover over the program card when the card is in the controller. If
you remove the card, put it in its original carrying case. Never touch the contacts or
twist or bend the card while you're handling it.
s Never touch the connector pins of a cable when it is attached to a component or host.
Component Precautions
System components referenced in this guide comply with regulatory standards and the use
of other components in their place may violate country standards, negate regulatory
compliance, or invalidate the warranty on your product.
About This Guide xv
Conventions
To help you find what you are looking for, this book uses the special notices and
typographical conventions described in the following sections.
Special Notices
This book does not contain detailed descriptions of standard safety procedures; however, it
does contain warnings for procedures that could cause personal injury, and cautions for
procedures that could damage the controller or its related components. Look for these
symbols when you are carrying out the procedures in this book:
WARNING: Text set off in this manner indicates that failure to follow directions in the
warning could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow directions could
result in damage to equipment or loss of information.
IMPORTANT: Text set off in this manner presents clarifying information or specific instructions.
NOTE: Text set off in this manner presents commentary, sidelights, or interesting points of
information.
xvi Data Replication Manager HSG80 ACS Version 8.5P Operations Guide for Novell NetWare Version 5.1
Text Conventions
Convention Meaning
ALLCAPS Command syntax that must be entered exactly as shown, for example:
SET FAILOVER COPY=OTHER
Command syntax that is discussed within text, for example:
ALLCAPS
"Use the SHOW SPARESET command to show the contents of the
spareset."
Monospaced Screen displays are in monospaced font.
Sans serif italic Command variables or numeric values that you supply, for example:
Sans serif italic SHOW RAIDset-name
or
SET THIS_CONTROLLER PORT_1_SCS_NODENAME=xxxxxx
References to other books, for example:
Serif italic
"See the Compaq StorageWorks HSJ80 Array Controller Configuration
Guide for details."
. Indicates that a portion of an example or figure has been omitted.
About This Guide xv ii
Related Publications
The following table lists some of the documents that you will need to refer to when
connecting, configuring, and operating your DRM solution.
Document Title Part Number
Compaq StorageWorks HSG80 Array Controller ACS V8.5 Configuration Guide EK-HSG85-CG. B01
Compaq StorageWorks HSG80 Array Controller ACS V8.5 CLI Reference Guide EK-HSG85-RG. A01
Compaq StorageWorks HSG80 Array Controller ACS V8.5 Maintenance and EK-HSG84-SV. C01
Service Guide
Compaq StorageWorks Fibre Channel Storage Switch Service Guide AA-RHBZA-TE
Compaq StorageWorks Fibre Channel Storage Switch User's Guide AA-RHBYA-TE
Compaq StorageWorks Fibre Channel SAN Switch Management Guide AA-RMMJA-TE
Compaq StorageWorks RA8000/ESA12000 and MA8000/EMA12000 Solution AA-RFB9D-TE
Software V8.5c for Novell NetWare Installation Reference Guide
Compaq StorageWorks Secure Path Version 3.0 for Novell NetWare 165993-B21
Compaq SANWorks Secure Path Version 3.0 for Novell Netware Installation and AA-RN72A-TE
Reference Guide
Compaq StorageWorks 64-Bit/66-MHz Fibre Channel Host Bus Adapter 122833-001
Installation Guide
Compaq StorageWorks Ultra SCSI RAID Enclosure (DS-BA370-Series) User's EKBA370UG
Guide
Compaq StorageWorks Command Console Version 2.2 (HSG80) for AA-RFA2D-TE
RA8000/ESA12000 User's Guide
Compaq StorageWorks Command Console Version 2.3 User Guide AA-RFA2F-TE
Compaq StorageWorks Model 2100 and 2200 Ultra SCSI Controller Enclosure EK-SE2C8-UA. B01
User Guide
Compaq StorageWorks Enclosure 4200 Family LVD Disk Enclosure User Guide EK-SW2ZS-UA. B01
Compaq SANworks SAN Switch Zoning Reference Guide EK-P20ZG-GA. A01
xviii Data Replication Manager HSG80 ACS Version 8.5P Operations Guide for Novell NetWare Version 5.1
Data Replication Manager Solution Kit
for Novell NetWare
The Data Replication Manager (DRM) Solution kit part number for DRM operating on
this operating system is:
s Novell NetWare Solution Kit Part Number = 231844-B21 / QB-6BTAH-SA
The following components are included in the DRM Solution kit:
DRM Solution CD
s Compaq SANworks Data Replication Manager HSG80 ACS Version 8.5P Operations
Guide for Novell NetWare Version 5.1
s Compaq SANworks Data Replication Manager HSG80 ACS Version 8.5P Release
Notes for Novell NetWare Version 5.1
s Compaq SANworks Application Note: Data Replication Manager over an ATM Link
Supporting OSG Version 2.2.5
s Compaq SANworks Application Note: Data Replication Manager over a
WDM-enabled Intersite Link
s Compaq SANworks Application Note: DRM Using Very Long Distance GBICs
Additional components not included in the DRM Solution kit that are required to run the
Data Replication Manager solution are available from other kits:
s Secure Path Version 3.0 for Novell NetWare Version 5.1
s HSG80 Solution Novell NetWare Version 5.1 Platform Kit
Revision History
Revision Level Date
Revision A, EK-DRMNN-OA. A01 April 2001
1
Chapter
Introduction to Data Replication Manager
This chapter introduces Data Replication Manager and describes the required hardware
and software components.
This chapter covers the following topics:
s "Data Replication Manager Overview" on page 11
"Peer-to-Peer Remote Copy Function" on page 12
"Hardware Redundancy" on page 12
"Hardware Components" on page 12
"Hardware Configurations" on page 111
"Software Components" on page 113
s "Additional Resources for Required Components and Software" on page 114
Data Replication Manager Overview
Data Replication Manager (DRM) provides a disaster-tolerant (DT) storage solution
through the use of hardware redundancy and data replication across multiple sites
separated by some distance.
A Data Replication Manager configuration consists of two sites. The initiator site carries
out primary data processing. Target sites are used for data replication. Since data
processing occurs at the initiator site, the data is replicated or mirrored to the target sites.
If a significant failure happens to the initiator site, data processing can be resumed at the
target sites, where the data is intact.
12 Data Replication Manager HSG80 ACS Version 8.5P Operations Guide for Novell NetWare Version 5.1
The DRM sites are connected over some distance via fiber optic cable or ATM. Data
Replication Manager uses Fibre Channel switches to send the data between the sites. If
sites are too distant to communicate via Fibre Channel, other hardware may be inserted
between the sites.
Peer-to-Peer Remote Copy Function
Data Replication Manager uses the peer-to-peer remote copy function of the HSG80
controller to achieve data replication. HSG80 controller pairs at the initiator site are
connected to their partner HSG80 controller pairs at the target site. Remote copy sets are
created from units at the initiator and target sites. These remote copy sets are mirrors of
each other. As data is written to a unit at the initiator, it is mirrored to its remote copy set
partner unit at the target site.
The HSG80 controllers provide failover and failback capabilities in case of failures.
Failover makes the data available at the target site after a failure. Failback is used to move
data operations back to the initiator once it has been brought back on-line.
Hardware Redundancy
Data Replication Manager provides hardware redundancy. In the face of single component
failures at a site, Data Replication Manager will failover to a redundant component at that
site to allow continued operations. For example, if one of the dual-redundant Fibre
Channel links between the sites were to fail, Data Replication Manager would switch to
the other link.
Hardware Components
Data Replication Manager uses a minimum of two HSG80 array controller pairs: one at
the initiator site and one at the target site. Each site must have one or more ESA12000
cabinets or EMA12000 modular storage cabinets:
s RA8000/ESA12000 cabinets are equipped with one or more BA370 enclosures and
disk Storage Building Blocks (SBBs). Each BA370 enclosure holds 24 disks.
s MA8000/EMA12000 modular storage cabinets are equipped with one or more
controllers and modular disk SBBs.
Introduction to Data Replication Manager 1 3
The hosts at the initiator and target sites are connected to a pair of dual redundant HSG80
array controllers, which are located inside of these enclosures. For complete details on this
equipment, refer to the Compaq StorageWorks RA8000/ESA12000 and
MA8000/EMA12000 Fibre Channel Solution Software V8.5c for Novell NetWare
Installation Reference Guide.
NOTE: While this documentation addresses ESA12000 storage cabinets as a primary unit for
Data Replication Manager configurations, The Compaq DT solution will function in any
equivalent cabinet that houses a BA370 enclosure.
For the EMA12000 modular storage cabinets, the Compaq DT solution will function in any
equivalent cabinet that houses the same number of controllers and an equivalent drive
configuration.
Additionally, cabinet configurations may be combined between the ESA12000 cabinets and
EMA12000 modular storage cabinets. For example, if the configurations are equivalent, an
ESA12000 cabinet may be used at one site (initiator or target) and an EMA12000 modular
storage cabinet may be used at the associated site (target or initiator).
Connections between the controllers and hosts are made at each site with two Fibre
Channel switches and two host bus adapters. Short-wave Gigabit Interface Converters
(GBICs) connect the host HBA and controllers to the switches at each site. Extended
GBICs or ATM connect the initiator and target switches together if they are more than 500
meters apart.
Cabinet Components
Tables and figures throughout this chapter show hardware that is necessary or optional to
complete a modular Data Replication Manager solution for each of two types of cabinet
configurations, the ESA12000 cabinet and the EMA12000 modular storage cabinet.
For detailed information about these components, refer to the following documents:
s Compaq StorageWorks HSG80 Array Controller ACS V8.5 Configuration Guide
s Compaq StorageWorks HSG80 Array Controller ACS V8.5 CLI Reference Guide
s Compaq StorageWorks HSG80 Array Controller ACS V8.5 Maintenance and Service
Guide.
14 Data Replication Manager HSG80 ACS Version 8.5P Operations Guide for Novell NetWare Version 5.1
ESA12000 Storage Cabinet
The ESA12000 storage building block cabinet houses the BA370 enclosures, which
contain the components listed in Table 11.
Table 11 ESA12000 Storage Cabinet Components
Two HSG80 Fibre Channel RAID array controllers
One Environmental Monitoring Unit (EMU)
One or two AC input power controllers
Up to 24 disk drive storage building blocks (SBBs) per BA370 enclosure
Five to eight 180-watt power supplies
Dual external cache batteries (ECBs)
Eight cooling fans
Six single-ended I/O Ultra SCSI modules
One Power Verification and Addressing (PVA) module
Two cache modules (512 MB each required) for each HSG80
Introduction to Data Replication Manager 1 5
Figure 11 shows the initial storage building block parts inside the ESA12000 cabinet
with a 24 disk drive capacity. Throughout this chapter, figures and text outline additional
hardware that is necessary or optional to complete a Data Replication Manager solution.
CXO6843A
Figure 11. ESA12000 storage building block
16 Data Replication Manager HSG80 ACS Version 8.5P Operations Guide for Novell NetWare Version 5.1
Figure 12 shows additional components that must be added to the ESA12000 building
block to support a Data Replication Manager solution, including Fibre Channel switches.
The optional redundant power distribution unit is also shown.
1. Top Fibre Channel
switch, 8- or 16-port
2. Bottom Fibre
Channel switch, 8-
or 16- port
3. Redundant power
distribution unit
(optional)
1
2
3
CXO6844A
Figure 12. Additional components for ESA12000 Data Replication Manager
Introduction to Data Replication Manager 1 7
EMA12000 Modular Storage Cabinet
The EMA12000 modular storage building block cabinets include power distribution units,
are pre-cabled, and contain the components listed in Table 12.
Table 12 EMA12000 Modular Storage Cabinet Components
Two HSG80 Fibre Channel RAID array controllers
Two Environmental Monitoring Units (EMUs)
Two AC input power controllers
Modular disk drive storage building blocks (SBBs):
D14 - Up to 42 drives per controller subsystem
S14 - Up to 72 drives per controller subsystem
Blue - Up to 42 drives per controller subsystem
Dual power supplies, per shelf
Dual external cache batteries (ECBs)
Dual Cooling fans, per shelf
Six single-ended I/O Ultra SCSI modules
Two cache modules (512 MB each required)
18 Data Replication Manager HSG80 ACS Version 8.5P Operations Guide for Novell NetWare Version 5.1
Figure 13 shows an EMA12000 modular building block that supports a Data Replication
Manager solution. The modular storage building block consists of the controller enclosure
and the disk enclosure. The redundant power distribution unit is also shown.
1. Controller enclosure
component of
modular storage
building block
2. Disk enclosure
component of
modular storage
building block
1 3. Redundant power
distribution unit
2
3
CXO7343A
Figure 13. Components for EMA12000 modular storage Data Replication Manager
Switches are placed in a different cabinet in this configuration of the EMA12000 D14 high
performance modular storage cabinet. A command center cabinet can be used to contain
the switches.
Throughout this chapter, figures and text outline additional hardware that is necessary or
optional to complete a modular Data Replication Manager solution.
Introduction to Data Replication Manager 1 9
Fibre Channel Switches
The Fibre Channel switches shown in Figure 14 and Figure 15 are two types of SAN
switches used to connect the controllers to the hosts and to link the initiator and target sites
together. The figures illustrate, respectively, the Fibre Channel SAN Switch 16 and the
Fibre Channel SAN Switch 8-EL. The ports hold short-wave, long-wave, or very long
distance Gigabit Interface Converters, which are described in the next section.
Refer to the Compaq StorageWorks Fibre Channel Storage Switch User's Guide for an
in-depth look at the features and functions of the Fibre Channel switches. Refer to the
Compaq StorageWorks Fibre Channel SAN Switch Management Guide for additional
detail on SAN switches.
CXO7085A
Figure 14. Fibre Channel SAN Switch 16
CXO7337A
Figure 15. Fibre Channel SAN Switch 8-EL
Gigabit Interface Converter (GBIC)
GBICs are the converters that are inserted into the ports of the Fibre Channel switch and
serve as the interface between the fiber optic cables and the switch. Short-wave GBICs are
used with a 50-micron multi-mode fiber optic cable (SC-terminated) to connect the
components at the initiator and target sites (host-to-switch; controller-to-switch). The
maximum distance that short-wave GBICs support is 500 meters.
Long-wave GBICs are used with 9-micron single-mode fiber optic cables (SC-terminated)
to link the initiator and target sites. Standard long-wave GBICs connect switches that are
up to 10 kilometers apart.
110 Data Replication Manager HSG80 ACS Version 8.5P Operations Guide for Novell NetWare Version 5.1
Power Distribution Unit (PDU)
The PDU component is included with the ESA12000 and EMA12000 cabinets:
s For the RA8000/ESA12000 cabinets, the PDU is used to distribute power to the
BA370s and switches. You can order a second PDU to support a fully-redundant
RA8000/ESA12000 power configuration.
s For the MA8000/EMA12000 cabinets, the PDU is used to distribute power to the
modular configurations of controllers and switches. PDU redundancy is included
with MA8000/EMA12000 modular configurations.
For more detailed information, refer to theCompaq StorageWorks RA8000/ESA12000 and
MA8000/EMA12000 Fibre Channel Solution Software V8.5c for Novell NetWare
| 122833-001
165993-B21
231844-B21
AA-RFA2D-TE
AA-RFA2F-TE
AA-RFB9D-TE
AA-RHBYA-TE
AA-RHBZA-TE
AA-RMMJA-TE
AA-RN72A-TE
DS-BA370-Se
EK-DRMNN-OA
EK-HSG84-SV
EK-HSG85-CG
EK-HSG85-RG
EK-P20ZG-GA
EK-SE2C8-UA
EK-SW2ZS-UA
QB-6BTAH-SA
|
