Enterprise Virtual Array
Drive Enclosure EMU
User Guide
Par t Number: EK-52EMU-UA. A01
First Edition August 2001
Product Version: VCS 1.0
This publication is for use by individuals responsible for installing
and maintaining the Enterprise Virtual Array Drive Enclosure EMU.
b
2001 Compaq Computer Corporation.
Compaq, the Compaq logo, StorageWorks, and SANworks are trademarks of Compaq Information
Technologies Group, L.P.
UNIX is a trademark of The Open Group.
All other product names mentioned herein may be trademarks of their respective companies.
Confidential computer software. Valid license from Compaq required for possession, use or copying.
Consistent 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.
Compaq shall not be liable for technical or editorial errors or omissions contained herein. The
information in this document is provided "as is" without warranty of any kind and is subject to change
without notice. The warranties 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.
Compaq 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 activities directly relating to the delivery of, and only during the term of, the
applicable services delivered by Compaq or its authorized service provider. Customer may not modify or
reverse engineer, remove, or transfer the software or make the software or any resultant diagnosis or
system management data available to other parties without Compaq's or its authorized service provider's
consent. Upon termination of the services, customer will, at 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.
Enterprise Virtual Array Drive Enclosure EMU User Guide
First Edition August 2001
Par t Number: EK-52EMU-UA. A01
Contents
About this Guide
Text Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Symbols in Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Symbols on Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Rack Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
Getting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
Compaq Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Compaq Website . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Compaq Authorized Reseller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
1 Introducing the Drive Enclosure EMU
SCSI-3 Enclosure Services Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Controls and Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
EMU Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
EMU Control Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
EMU Monitoring Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
EMU LED Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
EMU Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Replacing an EMU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Product Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2 Using the EMU LED Displays
EMU Pushbutton LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Analyzing the EMU LED Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3 Using the Alphanumeric Display
Alphanumeric Display Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Display Groups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Enterprise Virtual Array Drive Enclosure EMU User Guide iii
Contents
4 Using the Enclosure Number Feature
En Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Enclosure Address Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Enclosure Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Enclosure Address Bus Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5 Audible Alarm Operations
Audible Alarm Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Controlling the Audible Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
How to Mute or Unmute the Audible Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
How to Disable the Audible Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
How to Enable the Audible Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
6 Using the Condition Reporting Feature
Condition Report Terminology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Enclosure and Element Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
UNRECOVERABLE Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
CRITICAL Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
NONCRITICAL Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
INFORMATION Condition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Error Queue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Condition Report Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Navigating the Error Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Condition Report Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
7 Using the Loop ID Feature
Loop ID Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Assigning FC-AL Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
SCSI Bus and Fibre Channel Addressing Differences . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Address Assignment Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Fibre Channel Names. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Arbitrated Loop Physical Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Loop ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
How to View the Loop ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
8 Using the Reporting Group Feature
Reporting Group Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
How to View a Reporting Group Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
iv Enterprise Virtual Array Drive Enclosure EMU User Guide
Contents
A Analyzing Condition Reports
Condition Report Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A2
Correcting Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A2
Element Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A3
Drive Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A4
0.1.en.01 CRITICAL Condition
Drive Configuration, or Drive Link Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A5
0.1.en.02 INFORMATION Condition
Drive Missing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A6
0.1.en.03 INFORMATION Condition
Drive Software Lock Active . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7
0.1.en.04 CRITICAL Condition
Loop A Drive Link Rate Incorrect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7
0.1.en.05 CRITICAL Condition
Loop B Drive Link Rate Incorrect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A8
Power Supply Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A9
0.2.en.01 NONCRITICAL Condition
Power Supply AC Input Missing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A10
0.2.en.02 UNRECOVERABLE Condition
Power Supply Missing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A11
Blower Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A12
0.3.en.01 NONCRITICAL Condition
Blower Speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A13
0.3.en.02 CRITICAL Condition
Blower Speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A13
0.3.en.03 UNRECOVERABLE Condition
Blower Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A14
0.3.en.04 NONCRITICAL Condition
Blower Internal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A15
0.3.en.05 NONCRITICAL Condition
Blower Missing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A16
0.3.en.06 UNRECOVERABLE Condition
No Blowers Installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A17
Temperature Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A18
0.4.en.01 NONCRITICAL Condition
High Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A19
0.4.en.02 CRITICAL Condition
High Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A20
Enterprise Virtual Array Drive Enclosure EMU User Guide v
Contents
0.4.en.03 NONCRITICAL Condition
Low Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A21
0.4.en.04 CRITICAL Condition
Low Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A21
0.4.en.05 UNRECOVERABLE Condition
High Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A22
EMU Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A23
Resetting the EMU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A23
07.01.01 CRITICAL Condition
EMU Internal Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A24
07.01.02 UNRECOVERABLE Condition
EMU Communications Interrupted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A24
0.7.01.03 UNRECOVERABLE Condition
Power Supply Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A25
0.7.01.04 INFORMATION Condition
EMU Internal Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A25
0.7.01.05 UNRECOVERABLE Condition
Backplane NVRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A25
0.7.01.10 NONCRITICAL Condition
NVRAM Invalid Read Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A26
0.7.01.11 NONCRITICAL Condition
EMU NVRAM Write Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A27
0.7.01.12 NONCRITICAL Condition
EMU Cannot Read NVRAM Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A28
0.7.01.13 UNRECOVERABLE Condition
EMU Load Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A29
0.7.01.14 NONCRITICAL Condition
EMU Enclosure Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A30
0.7.01.15 UNRECOVERABLE Condition
EMU Hardware Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A31
0.7.01.16 INFORMATION Condition
EMU Internal ESI Data Corrupted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A31
0.7.01.17 UNRECOVERABLE Condition
Power Supply Shutdown Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A32
Transceiver Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A33
0.F.en.01 CRITICAL Condition
Transceiver Incompatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A33
vi Enterprise Virtual Array Drive Enclosure EMU User Guide
Contents
0.F.en.02 CRITICAL Condition
Transceiver Data Signal Lost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A34
0.F.en.03 CRITICAL Condition
Transceiver FC-AL Bus Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A34
Voltage Sensor and Current Sensor Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A35
1.2.en.01 NONCRITICAL Condition
High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A36
1.2.en.02 CRITICAL Condition
High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A37
1.2.en.03 NONCRITICAL Condition
Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A37
1.2.en.04 CRITICAL Condition
Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A38
1.3.en.01 NONCRITICAL Condition
High Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A38
1.3.en.02 CRITICAL Condition
High Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A39
Backplane Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A40
8.2.01.10 NONCRITICAL Condition
Backplane NVRAM Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A40
8.2.01.11 NONCRITICAL Condition
Backplane NVRAM Write Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A40
8.2.01.12 NONCRITICAL Condition
Backplane NVRAM Read Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A41
I/O Module Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A41
8.7.en.01 CRITICAL Condition
I/O Module Unsupported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A42
8.7.en.02 CRITICAL Condition
I/O Module Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A42
8.7.en.10 NONCRITICAL Condition
I/O Module NVRAM Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A43
8.7.en.11 NONCRITICAL Condition
I/O Module NVRAM Write Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A43
8.7.en.12 NONCRITICAL Condition
I/O Module NVRAM Read Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A44
Host Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A44
F.F.en.01 INFORMATION Condition
Host Generated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A44
Enterprise Virtual Array Drive Enclosure EMU User Guide vii
Contents
Glossary
Index
Figures
11 EMU location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
12 EMU controls and displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
21 EMU Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
31 Alphanumeric display and controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
32 Selecting a display group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
41 Enclosure numbering--rear view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
42 Enclosure address bus components--rear view . . . . . . . . . . . . . . . . . . . . . . . . 44
51 Muting the audible alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
52 Unmuting the audible alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
53 Disabling the audible alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
54 Enabling the audible alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
61 Displaying a disk drive CRITICAL high temperature condition . . . . . . . . . . . 66
62 Moving between element types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
63 Moving to the Er display group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
71 Viewing the loop ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
81 Selecting the display group rG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
82 Displaying the Reporting Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
A1 Drive bay and element numbering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A4
A2 Power supply element numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A9
A3 Blower element numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A12
A4 Disconnecting AC power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A32
A5 Transceiver element numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A33
A6 I/O module element numbering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A41
Tables
1 Text Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
11 EMU Monitoring Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
12 EMU Status LEDs and Icons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
13 EMU Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
21 Using the EMU Status LEDs to Analyze Operation . . . . . . . . . . . . . . . . . . . . . 22
22 EMU LED Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
31 EMU Display Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
51 Audible Alarm Sound Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
viii Enterprise Virtual Array Drive Enclosure EMU User Guide
Contents
A1 Assigned Element Type Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A3
A2 Temperature Sensor Element Numbering. . . . . . . . . . . . . . . . . . . . . . . . . . . . A18
A3 Element Temperature Sensor Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . A18
A4 Voltage and Current Sensor Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A35
A5 Voltage and Current Sensor Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A35
Enterprise Virtual Array Drive Enclosure EMU User Guide ix
About this Guide
The following sections are covered:
Text Conventions
Symbols in Text
Symbols on Equipment
Rack Stability
Getting Help
Compaq Authorized Reseller
Text Conventions
This document uses the conventions in Table 1 to distinguish elements of text.
Table 1: Text Conventions
Element Convention Examples
Named Keys Bold Home, Print Screen, Num Lock, Esc, PgUp
Key A plus sign (+) between two keys means that
Sequences you should press them simultaneously:
Ctrl+A, Ctrl+Home, Alt+Ctrl+Del
On the File menu, choose Save.
Initial Caps
Menu Items
(for UNIX, AIX, and Save the file in the C:\StorageSets\Default
Directory
Solaris directory names, directory.
Names
the exact case of every
(UNIX, AIX, Solaris): Save the file in the
Button
character is displayed).
/home/newuser/practice directory.
Names
To back up files, click the Backup Now button.
Dialog Box
Names In the Save As dialog box, choose the drive
then the folder.
Enterprise Virtual Array Drive Enclosure EMU User Guide xi
About this Guide
Table 1: Text Conventions (Continued)
Element Convention Examples
Initial Caps and User Input and System Responses:
User Input
and System monospace font. To exit from the program, type Exit.
Responses
At the prompt, type this command:
(Output and
COMMAND NAMES appear SHOW THIS_CONTROLLER
Error
in upper case, unless (no variable)
Messages)
they are case sensitive To see your settings, give the command:
COMMAND (UNIX, AIX, and Solaris SHOW FULL
NAMES command names are (with variable)
case sensitive and will
Drive Names
You will see the Continue? message.
not appear in uppercase).
Command Names
Use SET THIS_CONTROLLER to change
Entered
parameters.
are displayed in angle
To manage storage, enter RUN
brackets (< >) and all
sysmgr.exe
lower case.
(UNIX, AIX, Solaris): To list files, give the ls
command.
Drive Names:
Navigate to your CD-ROM drive
(usually D: or E:).
To configure storage, edit storageset.ini.
filenames Unless case sensitive,
use lowercase italics. Changes are stored in
If filenames are NewSystemConfigurationFile.ini.
case-sensitive (UNIX,
(UNIX, AIX, Solaris): Errors are logged to
AIX, Solaris) or are
MixedCaseFile.txt.
easier to understand with
some upper case letters,
the exact case of each
character is displayed.
To compare documents, choose:
Menu Command Initial Caps, with a right
Tools > Documents > Compare.
Sequences angle bracket (>)
between items. Menu
items are displayed as
shown on screen.
URLs Sans serif font. http://www.compaq.com/storage
xii Enterprise Virtual Array Drive Enclosure EMU User Guide
About this Guide
Symbols in Text
These symbols may be found in the text of this guide. They have the following
meanings.
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 or damage to
equipment.
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.
Symbols on Equipment
Any enclosed surface or area of the equipment marked with these
symbols indicates the presence of electrical shock hazards. Enclosed
area contains no operator serviceable parts.
WARNING: To reduce the risk of injury from electrical shock hazards, do
not open this enclosure.
Any RJ-45 receptacle marked with these symbols indicates a network
interface connection.
WARNING: To reduce the risk of electrical shock, fire, or damage to the
equipment, do not plug telephone or telecommunications connectors into
this receptacle.
Enterprise Virtual Array Drive Enclosure EMU User Guide xiii
About this Guide
Any surface or area of the equipment marked with these symbols
indicates the presence of a hot surface or hot component. Contact with
this surface could result in injury.
WARNING: To reduce the risk of injury from a hot component, allow the
surface to cool before touching.
Power supplies or systems marked with these symbols indicate the
presence of multiple sources of power.
WARNING: To reduce the risk of injury from electrical shock,
remove all power cords to completely disconnect power from the
supplies and systems.
Any product or assembly marked with these symbols indicates that the
component exceeds the recommended weight for one individual to
handle safely.
WARNING: To reduce the risk of personal injury or damage to the
equipment, observe local occupational health and safety requirements
and guidelines for manually handling material.
Rack Stability
WARNING: To reduce the risk of personal injury or damage to the equipment, be
sure that:
The leveling jacks are extended to the floor.
The full weight of the rack rests on the leveling jacks.
Getting Help
If you still have a question after reading this guide, contact a Compaq Authorized
Service Provider or visit out website.
xiv Enterprise Virtual Array Drive Enclosure EMU User Guide
About this Guide
Compaq Technical Support
In North America, call the Compaq technical support at 1-800-OK-COMPAQ. This
service is available 24 hours a day, 7 days a week.
NOTE: For continuous quality improvement, calls may be recorded or monitored.
Outside North America, call Compaq technical support at the nearest location.
Telephone numbers for worldwide technical support are listed on the Compaq
website: http://www.compaq.com.
Be sure to have the following information available before you call Compaq:
Technical support registration number (if applicable)
Product serial numbers
Product model names and numbers
Applicable error messages
Operating system type and revision level
Detailed, specific questions
Compaq Website
The Compaq website has the latest information on this product as well as the latest
drivers. Access the Compaq website at: http://www.compaq.com/storage.
Compaq Authorized Reseller
For the name of your nearest Compaq Authorized Reseller:
In the United States, call 1-800-345-1518.
In Canada, call 1-800-263-5868.
Elsewhere, see the Compaq website for locations and telephone numbers.
Enterprise Virtual Array Drive Enclosure EMU User Guide xv
1
Introducing the Drive Enclosure EMU
IMPORTANT: The information in this publication is based upon Compaq Enterprise Virtual
Array configurations. EMU functioning and operation in other configurations, such as a
just-a-bunch-of disks, may differ.
This chapter provides a general description of the environmental monitoring unit
(EMU) for Fibre Channel-Arbitrated Loop (FCAL) drive enclosures. The EMU is
fully SCSI-3 Enclosure Services (SES) compliant and mounts in the left rear bay of a
disk enclosure (see 1, Figure 11).
1 EMU
1
CXO7460A
Figure 11: EMU location
Enterprise Virtual Array Drive Enclosure EMU User Guide 11
Introducing the Drive Enclosure EMU
SCSI-3 Enclosure Services Functions
Each EMU contains an Enclosure Services Processor (ESP) that controls Enclosure
Services Interface (ESI). In SES terms, the drive enclosure is a sub-enclosure that
contains one or more devices, together with the associated power supplies, blowers,
displays, the ESP, and auxiliary equipment (such as the I/O modules) required to
support these devices.
All EMUs can transmit information to the host. However, only one EMU in each
reporting group or on a loop will communicate directly with the host at a time. In SES
terminology this EMU constitutes the primary sub-enclosure. The other EMUs are the
secondary sub-enclosures. These designations are temporary and can change at any
timethat is a secondary sub-enclosure can become a primary sub-enclosure, and
vice-versa. The SES SCSI-3 Enclosure Services Command Set (SES), American
National Standard for Information Services discusses the SES functions in detail.
In this publication the term enclosure refers to the drive enclosure with all of the
associated elements (EMU, power supplies, drives, blowers, and I/O modules). To
avoid confusion, use of the SES terms sub-enclosure, primary sub-enclosure, and
secondary sub-enclosure is limited in this publication.
Controls and Displays
See Figure 12 for the location and function of the EMU displays, controls, and
connectors.
12 Enterprise Virtual Array Drive Enclosure EMU User Guide
Introducing the Drive Enclosure EMU
1 Status LEDs
These three LEDs are visual
indications of the EMU and
enclosure status.
2 Alphanumeric Display
1
A two character, 7-segment
2 alphanumeric display of the
enclosure functions and status.
3
3 Function Select
4
("top") pushbutton
The primary function of this
pushbutton is to:
5
Select a display group function.
Modify the value of a display
6
group function.
7
The LED is on when there is an error
CXO6709A
condition.
4 Display Group Select ("bottom") pushbutton
The primary function of this pushbutton is to:
Select a display group
Move between display groups.
A secondary function is to control the audible alarm.
The LED is on when the audible alarm is muted or disabled.
WARNING: To reduce the risk of electrical shock, fire, or damage to the
equipment, do not plug telephone or telecommunications connectors
into the "RS232 ONLY" receptacle.
5 RS232 ONLY--A keyed, RJ45-type connector for use by Compaq Authorized
Service Providers.
6 LCD ONLY--An unused RJ45-type connector.
7 CAB ONLY--A keyed, RJ45-type enclosure address bus connector.
Figure 12: EMU controls and displays
Enterprise Virtual Array Drive Enclosure EMU User Guide 13
Introducing the Drive Enclosure EMU
EMU Functions
The primary functions of the EMU include:
Using the enclosure services processor (ESP) to control the enclosure services
interface (ESI) and communicate with the host controller
Assigning the Enclosure Number (En), based upon the cabinet address bus feature
Displaying the bay 1 loop ID
Monitoring enclosure operation
Detecting, reporting, recording, and displaying conditions
Displaying EMU, enclosure, and element status
Implementing automatic corrective actions for some conditions
Providing enclosure status data to a graphical user interface (GUI)
Reporting the World Wide Name and the logical address of all drives
IMPORTANT: Although the EMU can determine the logical address of a drive, the EMU can
neither display nor change this information. The HSV element manage GUI can display the
addresses from the EMU supplied status information.
EMU Control Functions
The EMU pushbuttons (see Figure 12) control the following EMU functions:
Recommending the bay 1 loop ID
Disabling or enabling the audible alarm
Muting or "unmuting" the audible alarm
NOTE: Disabling and muting the audible alarm are not the same. The disable function prevents
the audible alarm from sounding, regardless of how many new conditions occur. The mute
function temporarily disables the audible alarm until a new condition occurs.
The EMU can flash all an element status LEDs to implement the locate function.
14 Enterprise Virtual Array Drive Enclosure EMU User Guide
Introducing the Drive Enclosure EMU
EMU Monitoring Functions
The internal EMU circuitry monitors the enclosure and element functions listed in
Table 11.
Table 11: EMU Monitoring Functions
Element Monitored Functions
Blowers Installation Type
Removal Speed (rpm)
Drives Installation Loop ID
Removal Temperature
Bypass Status Drive Fault
EMU Temperature Type
Operation Revision level
Enclosure Enclosure power Backplane type
Enclosure fault Backplane revision
level
Type
I/O Module Installation
Removal Revision Level
Status
+5 V DC voltage and
Power Supplies Installation
current
Removal
+12 V DC voltage
Status
and current
Type
Total power
Revision level
Temperature
Transceiver Type Link status
Enterprise Virtual Array Drive Enclosure EMU User Guide 15
Introducing the Drive Enclosure EMU
EMU LED Displays
The EMU LEDs (see Table 12) display the EMU status, the enclosure power status,
and the enclosure fault status. The two green (EMU and enclosure power) and one
amber (enclosure fault) LEDs are either on, off, or flashing. The three LEDs in the
lower-right front corner of the enclosure also display this information.
NOTE: The functions and the icons for both the EMU LEDs and the enclosure LEDs are
identical. The enclosure fault LED colors may be different.
The LEDs on the enclosure, on the EMU, and in the EMU pushbuttons define the
status of the enclosure and the EMU. The LEDs in the pushbuttons may be on when
there is an active condition.
When there is an error condition, the top pushbutton LED is on.
-- When there is a single error condition, the LED is on until you view the error
condition.
-- When there are multiple errors, the LED is on until you view the last error
condition.
The bottom pushbutton LED is active only when the alarm is muted or disabled.
The EMU status LEDs are arranged horizontally above the alphanumeric display
(see Table 12). There is an icon on the EMU label beneath the LEDs (see Table 12).
These icons are the same as those on the front, lower right corner of the enclosure.
When the EMU and the enclosure are operational the LEDs, from left to right, are
flashing, on, and off.
Table 12: EMU Status LEDs and Icons
EMU "Heartbeat" (green LED) Power (green LED) Fault (amber LED)
16 Enterprise Virtual Array Drive Enclosure EMU User Guide
Introducing the Drive Enclosure EMU
EMU Displays
The EMU uses a combination of LEDs, icons, the two-character alphanumeric display, and an
audible alarm to indicate the operational status of the enclosure and the enclosure elements
(see Table 13).
Table 13: EMU Status Indicators
Indicator Function
1 Any EMU detected conditions causes this indicator to sound.
audible alarm
2
The EMU LEDs above the icons display the enclosure and
EMU Icons
EMU status.
The two-character, 7-segment alphanumeric display can
Alphanumeric
Display3 display decimal, alphabetical, or hexadecimal characters.
1. For information about the audible alarm, see Chapter 5, "Audible Alarm Operations."
2. For a description of the LED functions, see Chapter 2, "Using the EMU LED Displays."
3. For a description of the alphanumeric display functions, see Chapter 3, "Using the
Alphanumeric Display."
Replacing an EMU
The EMU is classified as a "hot-pluggable" element that you can remove and replace
without stopping data transfers or removing power. For EMU replacement procedures,
see the Enterprise Virtual Array Drive Enclosure User Guide.
Product Certification
The EMU can only be tested for compliance with country-specific standards as a part
of an enclosure, not as a standalone element. Therefore, the EMU certification is part
of the enclosure certification.
Enterprise Virtual Array Drive Enclosure EMU User Guide 17
2
Using the EMU LED Displays
The EMU LEDs (see Figure 21) display the EMU status, the enclosure power status,
and the enclosure fault status. The icons below the LEDs define the LED function.
The two green (EMU and enclosure power) and one amber (enclosure fault) LEDs are
either on, off, or flashing. The three LEDs in the lower-right front corner of the
enclosure also display this information.
NOTE: The functions and the icons for both the EMU LEDs and the enclosure LEDs are
identical. The LED colors may be different.
1 EMU Status LED
This flashing green LED is the
2 "heartbeat" for an operational
1
3 EMU.
2 Enclosure Power Status LED
This green LED is on when
both the +5 V DC and +12 V
DC are correct.
3 Enclosure Fault LED
This amber LED is normally
off. The LED is on when there
is an enclosure error condition.
CXO6819A
Figure 21: EMU Status LEDs
Enterprise Virtual Array Drive Enclosure EMU User Guide 21
Using the EMU LED Displays
EMU Pushbutton LEDs
The LEDs in the pushbuttons define error conditions and the state of the audible
alarm.
When there is an error condition, the top pushbutton LED is on.
-- When there is a single error condition, the LED is on until you view the error
condition.
-- When there are multiple errors, the LED is on until you view the last error
condition.
The bottom pushbutton LED is on only when the alarm is muted or disabled.
Analyzing the EMU LED Displays
The EMU status LEDs are arranged horizontally above the alphanumeric display
(see Table 21). There is an icon on the EMU label beneath each LED (see Table 21).
These icons are the same as those on the front, lower right corner of the enclosure.
When the EMU and the enclosure are operational the LED s, from left to right, are
flashing, on, and off.
Table 21: Using the EMU Status LEDs to Analyze Operation
EMU "Heartbeat"
(green LED) Power (green LED) Fault (amber LED
You can determine the EMU and enclosure status by analyzing the EMU LED
displays in Table 22.
22 Enterprise Virtual Array Drive Enclosure EMU User Guide
Using the EMU LED Displays
Table 22: EMU LED Displays
LED Display Status and Recommended Actions
LED LEGEND
Off On Flashing
The EMU locate function is active.
This display has precedence over all others.
Fault conditions cannot be displayed when the locate
function is active.
The EMU is operational.
The enclosure power (both +5 V DC and +12 V DC) is
present and correct.
There are NO enclosure faults.
The EMU is operational.
There is an enclosure fault.
Check the alphanumeric display error code for detailed
information about the problem.
The EMU is operational.
This display may be present when power is initially applied
to the enclosure.
Should this display fail to clear within a few seconds, this
could indicate there is a problem with the disk drive
+12 VDC power supply.
NOTE: When the +5 VDC is incorrect, all the LEDs are off.
There is an EMU fault
There is no enclosure fault.
There is an EMU fault
There is no enclosure fault.
There is an enclosure fault.
Either +5 VDC is incorrect, or both +5 VDC and +12 VDC
are incorrect.
Other error conditions may exist.
Enterprise Virtual Array Drive Enclosure EMU User Guide 23
3
Using the Alphanumeric Display
This chapter describes the general purpose, function, and operation of the EMU
alphanumeric display. Detailed information about specific displays are contained in:
Chapter 4, "Using the Enclosure Number Feature"
Chapter 6, "Using the Condition Reporting Feature"
Chapter 7, "Using the Loop ID Feature"
Chapter 8, "Using the Reporting Group Feature"
The two-character alphanumeric display is located at the top of the EMU (see 1,
Figure 31). This 7-segment display that provides information about multiple
enclosure functions. The pushbuttons control the data displayed or entered.
1 Alphanumeric Display
1 2 Function Select
(top pushbutton)
2
3 Display Group Select
3
(bottom pushbutton)
CXO7373A
Figure 31: Alphanumeric display and controls
Enterprise Virtual Array Drive Enclosure EMU User Guide 31
Using the Alphanumeric Display
Alphanumeric Display Description
This two-character alphanumeric display (see 1, Figure 31), is 7-segment display
that provides information about multiple enclosure functions. The top-level display
(En, Li, rG, Au, and Er) is the display group.
The function of the other displays is display-group dependent. The default display is
the En, a decimal number in the range 00 through 14. The pushbuttons allow you to
select the alphanumeric display or to enter data.
The bottom pushbutton (see 3, Figure 31) enables you to sequentially move
between and select a display group.
See Table 31 for a description of these display groups.
The top pushbutton, (see 2, Figure 31) enables you to move between the levels
within a display group.
Display Groups
As shown in Figure 32, whenever you press and release the bottom pushbutton, the
alphanumeric display selects a different display group.
Press and Release Pushbutton LED off
CXO7662A
Figure 32: Selecting a display group
32 Enterprise Virtual Array Drive Enclosure EMU User Guide
Using the Alphanumeric Display
Table 31 is a general description of the display groups.
IMPORTANT: 7-segment display limitations preclude displaying uppercase characters B, K, M,
N, Q, R, S, T, V, W, X, Y, or Z, or the lowercase characters a, e, f, g, j, k, l, m, n, p, q, s, t, v, w, x,
y, or z.
The lowercase characters b, c, d, h, i, o, r, and u displays are similar to the actual characters.
Table 31: EMU Display Groups
Display Display Group Description
En Enclosure Number The enclosure number is the default display and
is a decimal number in the range 00 through 14.
See Chapter 4, "Using the Enclosure Number
Feature," for detailed information
Li Bay 1 Loop ID This display group has a single sublevel display
that defines the enclosure bay 1 loop ID. Valid
loop IDs are in the range 00 through 7F.
See Chapter 7, "Using the Loop ID Feature," for
detailed information.
rG Repor ting Group This display group has two, 2-digit displays that
define the reporting group number in the range
0000 through 4095.
See Chapter 8, "Using the Reporting Group
Feature," for detailed information.
Au Audible Alarm This display group provides control over the
audible alarm or horn. The sublevel displays are
audible alarm enabled (on) or audible alarm
disabled (oF).
See Chapter 5, "Audible Alarm Operations," for
detailed information.
IMPORTANT: Regardless of what is being displayed, anytime you press and release the
bottom pushbutton (see 3, Figure 31), the display will change to En, Li, rG, Au, or Er.
A flashing alphanumeric display indicates that the user can edit an address, state, or
view a condition report. The following chapters describe the display and edit functions
of each group.
Enterprise Virtual Array Drive Enclosure EMU User Guide 33
4
Using the Enclosure Number Feature
This chapter provides a general description of the purpose, function, and operation of
the EMU enclosure number (En) feature.
En Description
In a single rack configuration, the En is a decimal number in the range 00 through 14
which is automatically assigned by the enclosure address bus.
By default, the two-character alphanumeric display shows this number. Pressing the
bottom pushbutton changes the display to En, the En display mode.
When the display is En, pressing and releasing the top pushbutton displays the En.
A display of 00 indicates that the enclosure is not connected to the enclosure address
bus. When this condition exists, there is no EMU-to-EMU communication over the
enclosure address bus. This configuration is known as "just-a-bunch-of-disks," or a
JBOD configuration.
A display of 01 through 14 indicates that the enclosure is physically connected to the
enclosure address bus and can exchange information with other enclosures on the
enclosure address bus. The decimal number indicates the physical position of the
enclosure in relation to the bottom of the rack.
01 is the address of the enclosure connected to the bottom connector in the first
(bottom) junction box (JB).
14 is the address of the enclosure closest to end of the bus, the top connector in the
last (upper) JB.
IMPORTANT: The enclosure address bus connection determines the En.
For a single rack, the display is a decimal number in the range 01 through 14. You can only
display, never change the En value, value.
Unless there is an error condition, the display automatically returns to the En
(01 through 14) one minute after a pushbutton was last pressed.
Enterprise Virtual Array Drive Enclosure EMU User Guide 41
Using the Enclosure Number Feature
The En is a decimal number in the range 00 through 14. By default, the two-character
alphanumeric display shows this number. Pressing the bottom pushbutton changes the
display to En, the En display mode.
For JBOD configurations the enclosure En display is always 00.
You can only display, not change, the En value.
Unless there is an error condition, the display automatically returns to the En
(01 through 14) one minute after a pushbutton was last pressed.
Enclosure Address Bus
The enclosure address bus is composed of cables and JBs that interconnects the drive
enclosures and controller enclosures to provide a means for managing and reporting
environmental conditions within the cabinet. The EMUs collect the data for the
associated enclosure.
The drive enclosure numbers are always assigned by the enclosure address bus.
Connecting the EMU CAB ONLY connector to a enclosure address bus JB
automatically establishes an En of 01 through 14. Any drive enclosure not connected
to the enclosure address bus has the same En, 00.
IMPORTANT: The En is automatically assigned. There is no provision for you to manually
assign an enclosure number.
Another function of the enclosure address bus is to provide communications within a
reporting group. A reporting group is an HSV controller pair and the associated drive
enclosures. The HSV controller pair assigns a unique decimal reporting group number
to all EMUs on each redundant FC-AL loop pair.
For more information about the reporting group number, see Chapter 8, "Using the
Reporting Group Feature."
42 Enterprise Virtual Array Drive Enclosure EMU User Guide
Using the Enclosure Number Feature
Enclosure Numbering
Based on the cable bus installation shown in Figure 42, the enclosures are numbered as shown
in Figure 41.
1r Enclosures 1 through 14
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CXO7649A
Figure 41: Enclosure numbering--rear view
Enterprise Virtual Array Drive Enclosure EMU User Guide 43
Using the Enclosure Number Feature
Enclosure Address Bus Connections
Connecting the enclosures to the cabinet JBs establishes the enclosure address bus. The
enclosures are automatically numbered, based on their physical distance from the bottom
terminator. Figure 42 shows the typical configuration of a 42U cabinet with 14 enclosures
(3U high).
11
7
Junction Boxes (JB)
6
1 JB 1Enclosures 1 and 2
2 JB 2Enclosures 3 and 4
3 JB 3Enclosures 5 and 6
5
4 JB 4Enclosures 7 and 8
10
5 JB 5Enclosures 9 and 10
6 JB 6Enclosures 11 and 12
4
7 JB 7Enclosures 13 and 14
Components
8 Bottom Terminator
9
3 9 JB-to-Enclosure Cable
381 Mm (15 in), 1 of 14 cables
- JB-to-JB Cable
210 mm (8.25 in), 1 of 6 cables
2
q Top Terminator
1
8
CXO7341A
Figure 42: Enclosure address bus components--rear view
44 Enterprise Virtual Array Drive Enclosure EMU User Guide
5
Audible Alarm Operations
Whenever there is an error condition, the audible alarm automatically sounds until all
errors are corrected. You have the option of either muting or disabling the alarm.
Using these options establish the following conditions:
A disabled audible alarm cannot sound.
Even when muted, any new condition causes the alarm to sound.
Audible Alarm Patterns
The duration and number of times the audible alarm sounds, the sound pattern, is a
function of the error condition type. See Table 51 for the duration and the
approximate relationship of these alarms.The most severe, active error condition
controls the alarm pattern.
Table 51: Audible Alarm Sound Patterns
Condition Type Cycle 1 Cycle 2
UNRECOVERABLE
CRITICA L
NONCRITICA L
INFORMATION
Legend Alarm On Alarm Off
Controlling the Audible Alarm
You can control the alarm with the pushbuttons. This includes muting, enabling, and
disabling. When there is an error condition, the alphanumeric display is Er, the alarm
sounds, and you can:
Enterprise Virtual Array Drive Enclosure EMU User Guide 51
Audible Alarm Operations
Correct all errors, thereby silencing the alarm until a new error occurs.
"Mute," or temporarily disable, the alarm by pressing and holding the bottom
pushbutton (see Figure 51). The alarm remains off until another error occurs, or
until you enable ("unmute") the alarm (see Figure 52). When a new error occurs,
the alarm sounds and the pushbutton LED is off.
Using the mute feature ensures that you are aware of the more severe errors and
provides you with the capability of correcting them promptly.
Disable the alarm to prevent any error condition from sounding the alarm
(see Figure 53).
IMPORTANT: Disabling the alarm does not prevent the EMU alphanumeric display from
displaying Er. Nor does it prevent the HSV element manager from displaying the error condition
report.
When the alarm is enabled (on), the bottom pushbutton LED is off.
How to Mute or Unmute the Audible Alarm
When there is an error condition and you have determined that either:
the error does not require implementing immediate corrective action,
or
you cannot implement corrective (for example, you require a replacement
element)
You can mute audible alarm by completing the following procedure.
52 Enterprise Virtual Array Drive Enclosure EMU User Guide
Audible Alarm Operations
1. To mute the alarm press and hold the bottom pushbutton until the LED is on.
LEGEND
Press and Hold Pushbutton LED off
Pushbutton LED on
CXO7670A
Figure 51: Muting the audible alarm
A muted alarm will remain off until there is a new condition report, or you unmute
the alarm.
2. To unmute the alarm, press and hold the bottom pushbutton until the LED is off.
When there is a new error condition, the alarm will sound.
CXO7671A
Figure 52: Unmuting the audible alarm
Enterprise Virtual Array Drive Enclosure EMU User Guide 53
Audible Alarm Operations
How to Disable the Audible Alarm
Disabling the audible alarm affects only a single enclosure. This action does not affect
condition report displays on either the EMU alphanumeric display nor the HSV
element manager GUI.
Complete the following procedure to disable the alarm.
1. Press and release the bottom pushbutton until the alphanumeric display is Au
(see Figure 53).
LEGEND
Press and Hold Pushbutton LED off
Pushbutton LED on
Press and Release
Flashing Alphanumeric Display
CXO7672A
Figure 53: Disabling the audible alarm
2. Press and hold the top pushbutton until the alphanumeric display is a flashing on
(Audible Alarm on).
54 Enterprise Virtual Array Drive Enclosure EMU User Guide
Audible Alarm Operations
IMPORTANT: When the alarm display is flashing, pressing and holding the top pushbutton
causes the display to rapidly change between on and oF.
Pressing and releasing the top pushbutton causes the display to select the next state.
3. Press and release the top pushbutton to change the display to a flashing oF
(Audible Alarm off).
4. Press and release the bottom pushbutton to accept the change and display Au. The
bottom pushbutton LED is now on.
CAUTION: A disabled audible alarm (the bottom pushbutton LED is on) cannot sound
for any error condition. All errors will be displayed on the HSV element manager GUI
and the EMU alphanumeric display.
Compaq recommends that rather than disabling the audible alarm, you use the mute
function (see the section titled "How to Mute or Unmute the Audible Alarm").
When you use the disable function, you should enable the audible alarm as soon as
possible (see the section titled "How to Enable the Audible Alarm").
Enterprise Virtual Array Drive Enclosure EMU User Guide 55
Audible Alarm Operations
How to Enable the Audible Alarm
Complete the following procedure to enable the alarm.
1. Press and release the bottom pushbutton until the alphanumeric display is Au
(see Figure 54).
LEGEND
Press and Hold Pushbutton LED off
Pushbutton LED on
Press and Release
Flashing Alphanumeric Display
CXO7673A
Figure 54: Enabling the audible alarm
2. Press and hold the top pushbutton until the alphanumeric display is a flashing oF
(Audible Alarm off)
IMPORTANT: When the alarm display is flashing, pressing and holding the top pushbutton
causes the display to rapidly change between on and oF. Pressing and releasing the top
pushbutton causes the display to select the next state.
56 Enterprise Virtual Array Drive Enclosure EMU User Guide
Audible Alarm Operations
3. Press and release the top pushbutton to change the display to a flashing on
(Audible Alarm on).
4. Press and release the bottom pushbutton to accept the change and to display Au.
The bottom pushbutton LED is now off.
Enterprise Virtual Array Drive Enclosure EMU User Guide 57
6
Using the Condition Reporting Feature
The EMU reports errors to the user by changing the alphanumeric display to Er and
sounding the audible alarm. A condition report has precedence over all other displays.
IMPORTANT: An error is always generates a condition report. Not all condition reports are
generated by errors.
Condition Report Terminology
Each EMU detected condition generates a condition report containing the following
information:
Element type (et)
Element number (en)
Error code (ec)
Each condition report:
Appears on the EMU alphanumeric display
Sounds the audible alarm
Is stored in the error queue
Is provided to the HSV controller for processing and display on the HSV element
manager.
The following sections define the condition types, condition reports, and the
interaction between conditions.
Enterprise Virtual Array Drive Enclosure EMU User Guide 61
Using the Condition Reporting Feature
Enclosure and Element Conditions
The EMU constantly monitors enclosure and element operation and notifies the user
of conditions that could affect operation. These errors are grouped according to their
severity, into the following types:
Unrecoverable condition
Critical condition
Noncritical condition
Information condition
See Enterprise Virtual Array" for definitions of individual condition reports.
When the audible alarm is not muted or disabled, each condition generates a unique
audible alarm as described in Chapter 5, "Audible Alarm Operations."
UNRECOVERABLE Condition
This most severe condition is active when one or more enclosure elements have failed
and have disabled some enclosure functions. The enclosure may be incapable of
| EK-52EMU-UA
|
