HP StorageWorks Modular Smart Array 500 Overview page 6

QuickSpecs
Modular Smart Array 500 Components
Modular Smart Array 500 Modular Smart Array 500 Modular Smart Array 500 Modular Smart Array 500
Controller Controller Controller Controller
SCSI I/O Module SCSI I/O Module SCSI I/O Module SCSI I/O Module
Controller Cache Upgrade Controller Cache Upgrade Controller Cache Upgrade Controller Cache Upgrade
Fault Recovery Fault Recovery Fault Recovery Fault Recovery
The I/O module on the Modular Smart Array includes an integrated Environmental Monitoring Unit which performs several
functions including monitoring the enclosure functions, providing I/O connectors and signaling enclosure status. Modular
Smart Array 500 ships standard with a 2-Port I/O Module.
The 4-Port Shared Storage Module with Smart Array Multipath is available as an option.
The 4-Port Shared Storage Module may be deployed as follows:
As the shared storage component with up to four servers in a DAS (Direct Attached Storage) configuration.
Multiple I/O paths to a two node cluster or two direct attached servers.
DA - 11050
HP StorageWorks Modular Smart Array 500 HP StorageWorks Modular Smart Array 500 HP StorageWorks Modular Smart Array 500 HP StorageWorks Modular Smart Array 500
Cache on the Modular Smart Array 500 Controller may be upgraded to a
maximum of 512 MB.
NOTE: The Modular Smart Array 500 Controller allows the following cache NOTE: NOTE: NOTE:
configurations: 1 x 128 MB; 2 x 128 MB; 1 x 256 MB; 2 x 256 MB
NOTE: NOTE: NOTE: When redundant controllers are installed, the cache configurations in both NOTE:
controllers must be identical.
Minimizes downtime, reconstructs data, and facilitates a quick recovery from drive
failure.
On-Line Spares: If a failure occurs, recovery begins with an on-line spare and data
is reconstructed automatically. One on-line spare can be assigned per array and
used across multiple arrays. It is also possible to assign different on-line spares
across different arrays.
Array Accelerator: Onboard, battery-backed cache memory protects data in the
event of a power failure. In the unlikely event of a controller failure, the battery-
backed cache will save critical user data for up to three days.
Canada — Version 13 — July 19, 2004 Page 6