Compaq RAID ARRAY 3000 EK-SMCPO-UG. C01 - Manual (Page 40)

2-6 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide
Compaq Confidential – Need to Know Required
Writer: Bob Young Project: RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Comments:
Part Number: EK-SMCPO-UG. C01 File Name: c-ch2 RAID Array Controller.doc Last Saved On: 12/4/00 1:51 PM
Table 2-1
Controller Specifications
continued
Item Specifications
Disk warm spare (not spinning) Yes, global warm spare
Redundant power supplies Yes
Redundant controllers Yes
Controller failover Yes, automatic
Controller hot spare Yes (Active/Passive mode)
Controller hot plug Yes
Cluster support Yes, single (SCSI) bus cluster
Maximum number of units presented to host 64
Maximum host port transfer speed 20 MHz
Command queuing Yes, 64 commands (host and disk SCSI
channels)
Heterogeneous multi-host support Yes
Mixed drive types Yes
Configurable reconstruct time Yes
Stripe size (chunk size) Variable
Write through cache Yes, user selectable (optional)
Write back cache Yes, user selectable (default)
Write on top Yes
Write gathering Yes
Battery backup for cache Yes, Pedestal Uninterruptable Power Supply
(UPS)
Boot capability Bootable from RAID set (system-dependent)
Number of controllers /system Two
Cache support Up to 64 MB (using two 32 MB industry
standard, 72-pin, 36-bit, 60 ns SIMMS)
FCC rating Class B
continued