symbios logic J21971S-0398, Installation Manual

Page: 18 / 86

Preparing the Data Center Cabinet
Set the Drive SCSI IDs
8 MetaStor Command Module Installation Guide Revision A, March 1998
Set the Drive SCSI IDs
Tools/Equipment
Antistatic wrist strap, screwdriver, jumpers, and other applicable
tools
Instructions
A deskside or rackmount command module supports five SCSI
drive channels with up to ten drives per channel. Although the host
IDs for the command module controllers are selectable (see
page
12 ), the drive SCSI IDs are not selectable on the controller module.
The command module controllers reserve drive SCSI IDs 6 and 7.
Drive modules can use drive SCSI IDs 0–4 or 8–12 (C hexadecimal).
Use this procedure to check and change the drive SCSI IDs on all
drive modules that you intend to attach to the command module.
CAUTION Electrostatic charge can damage sensitive components. Use a
grounding wrist strap or other antistatic device before removing or
handling the components in the cabinet.
1 Put on an antistatic wrist strap or other protective device.
Make sure that the power to all applicable drive modules is turned off.
2 As necessary, change the SCSI ID settings on all drive
modules that you are attaching to the command module.
As necessary, change the drive module drive SCSI ID numbers using
the instructions provided in the drive module hardware documentation
and the examples shown in
“Deskside SCSI Cabling Examples” on
page 26 or “Rackmount SCSI Cabling Examples” on page 29 . The
illustrations show drive channel and drive SCSI ID numbering
schemes, based on the number of attached drive modules. Do not use
drive SCSI ID numbers 6 or 7.
3 Choose one:
●
Installing a rackmount command module. Go to “Preparing
the Command Module” on page 9 .
●
Installing a deskside command module. Go to “Set the Host
IDs on the Controllers” on page 12 .
End of Procedure