Avago Technologies MegaRAID SCSI 320-0 (520-0 CH) - Manual (Page 70)

4-12 Installing and Configuring Clusters
Copyright © 2003-2008 by LSI Corporation. All rights reserved.
4.6 Installing SCSI Drives
This information is provided as a generic instruction set for SCSI drive
installations. If the SCSI hard disk vendor’s instructions conflict with the
instructions in this section, always use the instructions supplied by
the vendor.
The SCSI bus listed in the hardware requirements must be configured
prior to installation of Cluster Services. This includes
•
Configuring the SCSI devices.
•
Configuring the SCSI Storage Adapters and hard disks to work
properly on a shared SCSI bus.
•
Properly terminating the bus. The shared SCSI bus must have a
terminator at each end of the bus. It is possible to have multiple
shared SCSI buses between the nodes of a cluster.
In addition to the information on the next page, refer to the
documentation from the SCSI device manufacturer or the SCSI
specifications, which can be ordered from the American National
Standards Institute (ANSI). The ANSI web site contains a catalog that
you can search for the SCSI specifications.
4.6.1 Configuring the SCSI Devices
Each device on the shared SCSI bus must have a unique SCSI ID. Since
most SCSI Storage Adapters default to SCSI ID 7, part of configuring the
shared SCSI bus is to change the SCSI ID on one Storage Adapter to a
different SCSI ID, such as SCSI ID 6. If more than one disk is to be on
the shared SCSI bus, each disk must also have a unique SCSI ID.
4.6.2 Terminating the Shared SCSI Bus
You can connect
Y cables to devices if the device is at the end of the
SCSI bus. You can then attach a terminator to one branch of the
Y cable
to terminate the SCSI bus. This method of termination requires either
disabling or removing any internal terminators the device has.
Important: Any devices that are not at the end of the shared bus must
have their internal termination disabled.