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Hardware Requirements and Restrictions
This chapter describes the hardware requirements and restrictions for
a TruCluster Server cluster. It includes lists of supported cables, trilink
connectors, Y cables, and terminators.
For the latest information about supported hardware see the
AlphaServer options list for your system at the following URL:
http://www.compaq.com/alphaserver/products/options.html
2.1 TruCluster Server Member System Requirements
The requirements for member systems in a TruCluster Server cluster are as
follows:
• Each supported member system requires a minimum firmware revision.
See the Release Notes Overview supplied with the Alpha™ Systems
Firmware Update CD-ROM.
You can also obtain firmware information from the Web at the following
URL:
http://www.compaq.com/support/
Select software & drivers, then select All Products under the
Alpha Systems heading. Select Alpha Firmware updates, then select
the appropriate system.
• Alpha system reference manual (SRM) console firmware Version 5.7 or
later must be installed on any cluster member that boots from a disk
behind an HSZ80, HSG60, or HSG80 controller. If the cluster member
is using earlier firmware, the member may fail to boot, indicating
"Reservation Conflict" errors.
• TruCluster Server Version 5.1 supports eight-member cluster
configurations as follows:
– Fibre Channel: Eight-member systems may be connected to common
storage over Fibre Channel in a fabric (switch) configuration.
– Parallel SCSI: Only four of the member systems may be connected to
any one SCSI bus, but you can have multiple SCSI buses connected
to different sets of nodes, and the sets of nodes may overlap. We
recommend you use a DS-DWZZH-05 UltraSCSI hub with fair
Hardware Requirements and Restrictions 2–1