Compaq StorageWorks TM RAID Array 3000 Pedestal Storage Subsystem Hardware User's Manual page 40

2-6 RAID Array 3000 Pedestal Storage Subsystem Hardware User's Guide
Table 2-1
Controller Specifications
Item
Disk warm spare (not spinning)
Redundant power supplies
Redundant controllers
Controller failover
Controller hot spare
Controller hot plug
Cluster support
Maximum number of units presented to host
Maximum host port transfer speed
Command queuing
Heterogeneous multi-host support
Mixed drive types
Configurable reconstruct time
Stripe size (chunk size)
Write through cache
Write back cache
Write on top
Write gathering
Battery backup for cache
Boot capability
Number of controllers /system
Cache support
FCC rating
continued
Yes, global warm spare
Yes
Yes
Yes, automatic
Yes (Active/Passive mode)
Yes
Yes, single (SCSI) bus cluster
64
20 MHz
Yes, 64 commands (host and disk SCSI
channels)
Yes
Yes
Yes
Variable
Yes, user selectable (optional)
Yes, user selectable (default)
Yes
Yes
Yes, Pedestal Uninterruptable Power Supply
(UPS)
Bootable from RAID set (system-dependent)
Two
Up to 64 MB (using two 32 MB industry
standard, 72-pin, 36-bit, 60 ns SIMMS)
Class B
Specifications
continued