Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA370 Series) User's Guide (EK-BA370-UG. C02, September 1998)

Operating the UltraSCSI Enclosure
UltraSCSI RAID Enclosure 2–3
• Compaq UltraSCSI array controllers support FAST 10 (20 MB/s)
16-bit (wide) disk drives.
• Compaq UltraSCSI array controllers support FAST 20 (40 MB/s)
16-bit (wide) disk drives.
Caution
If a conflict in controller configuration information exists
between this document and the controller-specific
documentation, use information contained in the
controller-specific documentation.
Note
Disk drive support is controller-specific. Refer to the array
controller documentation to determine compatible disk
drives.
UltraSCSI Nodes
A node is a
SCSI device
that uses a SCSI bus ID. In the UltraSCSI
RAID enclosure, the following rules apply:
• SCSI bus ID 7 is reserved for the controller only.
• SCSI bus ID 6 is reserved for the controller only.
• SCSI bus IDs 4 or 5 cannot be used.
• 5.25-inch devices are not supported.
• The valid device SCSI bus IDs are device type dependent,
meaning:
— An UltraSCSI device can use device addresses 0 through 3 or
8 through 15.
—A wide (16-bit), FAST 10, SCSI device (–VW suffix) uses
device addresses 0 through 3 or 8 through 15.