Technical data

4
TruCluster Server System Configuration
Using UltraSCSI Hardware
This chapter describes how to prepare systems for a TruCluster Server
cluster, using UltraSCSI hardware and the preferred method of radial
configuration, including how to connect devices to a shared SCSI bus for
the TruCluster Server product. This chapter does not provide detailed
information about installing devices; it describes only how to set up the
hardware in the context of the TruCluster Server product. Therefore, you
must have the documentation that describes how to install the individual
pieces of hardware. That documentation typically arrives with the hardware.
The chapter discusses the following topics:
• Planning a TruCluster Server hardware configuration (Section 4.1)
• Obtaining the firmware release notes (Section 4.2)
• Installing hardware in a TruCluster Server configuration (Section 4.3)
All systems in the cluster must be connected via the Memory Channel cluster
interconnect. Not all members must be connected to a shared SCSI bus.
You need to allocate disks for the following uses:
• One or more disks to hold the Tru64 UNIX operating system. The disks
are either private disks on the system that will become the first cluster
member, or disks on a shared bus that the system can access.
• One or more disks on a shared SCSI bus to hold the clusterwide root (
/),
/usr, and /var AdvFS file systems.
• One disk per member, normally on a shared SCSI bus, to hold member
boot partitions.
• Optionally, one disk on a shared SCSI bus to act as the quorum disk. See
Section 1.3.1.4 and, for a more detailed discussion of the quorum disk,
see the Cluster Administration manual.
All configurations that are covered in this manual are based on the use
of a shared SCSI bus.
TruCluster Server System Configuration Using UltraSCSI Hardware 4–1