Raid Controllers - Compaq StorageWorks 2100 User Manual

2–2 Model 2100 and 2200 Ultra SCSI Controller Enclosures User Guide
68-pin VHDCI cables and connectors are required.
The following devices use a SCSI bus address (ID) and are classified as SCSI bus
"nodes:"
Array controllers
Storage devices
Every node on a bus must have a unique SCSI bus ID.
16 SCSI bus IDs are available—0 through 15. Two are reserved for the array controller
(6 and 7).
SCSI bus ID 7 is always assigned to Controller A.
SCSI bus ID 6 is always assigned to Controller B.
SCSI bus IDs 0 through 5 and 8 through 15 are available for storage enclosure
use—as supported by the ACS version.

RAID Controllers

The following general configuration rules apply to Compaq StorageWorks RAID array
controllers:
Controller A is the primary controller and always uses SCSI bus ID 7. No other device
on the bus can use this address.
Controller B is the redundant controller and always uses SCSI bus ID 6. No other
device on the bus can use this address.
Compaq RAID array controllers support Ultra SCSI (40 MB/s) 16-bit (wide) storage
devices.
NOTE: Storage device support is array controller-specific. Refer to array controller
documentation to determine compatible storage devices.
CAUTION: If a conflict exists between array controller configuration information and
this document, use information in the array controller documentation.