User`s guide

3
Reconfiguring the RA3000 Pedestal for
the Expansion Pedestal Option
The following documentation covers installing the StorageWorks RAID
Array 3000 expansion pedestal option:
• RAID Array 3000 Storage Subsystem Expansion Pedestal Option
Installation Guide (EK-SM3KA-IG)
• RAID Array 3000 Storage Subsystem Hardware User’s Guide Chapter 4
(EK-SMCPO-UG), which is basically a copy of EK-SM3KA-IG
Although most of the descriptive information in the Revision A01 version is
correct, many of the illustrations accompanying the descriptions are
incorrect.
Therefore, this chapter provides an abbreviated description, with corrected
illustrations, on how to reconfigure the RA3000 pedestal for use with an
expansion pedestal option.
It is expected that the previous documents will be revised shortly.
3.1 Overview
The StorageWorks RAID Array 3000 pedestal subsystem has the capacity
for seven single-ended disks in a split-bus (two SCSI buses) configuration.
The disks in base pedestal slots 0, 1, 2, and 3 (top four slots) use SCSI IDs
8, 9, 10, and 11, and form the first SCSI bus. The disks in base pedestal
slots 4, 5, and 6 use SCSI IDs 8, 9, and 10, and form the second SCSI bus.
When the expansion pedestal option is added, the two RA3000 pedestal
single-ended SCSI buses (split-bus) are reconfigured into a single SCSI bus.
The expansion pedestal contains the second SCSI bus.
If you have seven disks installed in the RA3000 pedestal, and are upgrading
with the expansion pedestal option, when the split-bus is reconfigured to a
single bus, the disks in base pedestal slots 4, 5, and 6 will be assigned new
SCSI IDs (12, 13, and 14). If you wish to retain the data on these three
disks, the disks must be moved to the top three slots (0, 1, and 2) of the
expansion pedestal option, where they retain the SCSI IDs of 8, 9, and 10.
Reconfiguring the RA3000 Pedestal for the Expansion Pedestal Option 3–1