Standard Models
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*Features* Descriptions
*Electrical Interface* LVD (Low Voltage Differential)
*Protocol Support* U320 - Backward compatible with Ultra 2 and Ultra 3
Drives
*SCSI Ports* *641:* 1 internal
*642:* 1 internal, one external VHDCI
*Drives Supported* *641:* Up to 6 internal
*642:* Up to 6 internal, up to 14 external (20
total)
*Maximum Capacity* 1.5 TB (20 drives x 72.8 GB)
*PCI* PCI-X and 3.3 volt PCI compatibility *1*
*PCI Bus Speed* 64-bit, 133-MHz PCI-X (1 GB/s maximum bandwidth)
*Logical Drives* Up to 32 logical drives
*RAID Support* RAID 5 (Distributed Data Guarding)
RAID 1+0 (Striping & Mirroring)
RAID 1 (Mirroring)
RAID 0 (Striping)
*Cache Memory* 64 MB DDR Memory Cache (64-MB module upgrade to
128MB Battery Backed cache is available)
*Cache Batteries* Up to 3 days of redundant battery life (72 hrs. for
the BBWC module) removable for easy replacement
*Disk Drive and \u320, Ultra3, Ultra2
Enclosure Protocol
Support*
*Memory Addressing* 64-bit, supporting servers memory greater than 4 GB
*Supported Servers * ML310, ML330/G2, ML350/G3, ML370/G3, ML570/G2,
ML530/G2, DL320/G2, DL380/G3, DL360/G3, and
DL580/G2.
*Note 1:* The SA-641/642 is not supported in 5 volt PCI slots
Description
===========
The Smart Array 641/642 controllers raise the standard to higher performance
levels with several enhancements including enhanced memory architecture and
RAID engine. Designed and tested with industry-standard ProLiant Servers for
greater reliability, this controller is ideal for the distributed workgroup
server or centralized departmental server, and like other Smart Array
controllers, the SA-641 and SA-642 offers complete data compatibility with
previous generations' Smart Array controllers for easy data migration and
upgradability.
Features
========
Modular, easy-to-upgrade design lets you optimize performance as
needed, from 64-MB to 128-MB battery-backed cache.
Ultra320 SCSI technology delivers high performance and data
bandwidth up to 320 MB/s bandwidth per channel.
Dual Channels (SA-642 only) provide the ability to support up to
20 drives or 1.5 TB.
Mix-and-match LVD SCSI compatibility protects your investments
and lets you deploy drives as needed.
Battery-backed Cache protects cached data in the event of a
power outage, server failure or controller failure, and redundant,
replaceable batteries take that protection even further.
64-bit, 133 MHz PCI-X interface boosts bandwidth above 1GB/s
burst transfer rate over PCI-X bus.
64-bit memory addressing supports servers with greater than 4 GB
of memory.
Online Management Features: Online Capacity Expansion, Online
RAID Level Migration, Online Stripe Size Migration, Online Spares
(Global), User Selectable Read/Write cache, User Selectable Expand and
Rebuild Priority
Hot Plug Tape Support (AIT100/200, 50/100, 35/70; DAT 20/40)
Supports On-line spares including multiple On-line Spares
Support for Drive Roaming and Drive Migration
User selectable stripe size and Stripe size migration (online)
RAID Level Migration
Array capacity expansion (online)
Logical drive capacity extension (online)
Multiple logical drives per array
S.M.A.R.T. support (Drive Pre-Failure Warranty)
ARM (Auto-Reliability Monitoring)
Dynamic Sector Repair
Background Parity Initialization
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