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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. This documentation should arrive with the hardware.
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 disk(s)
are either private disk(s) on the system that will become the first cluster
member, or disk(s) 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 TruCluster Server
Cluster Administration manual.
All configurations covered in this manual assume the use of a shared SCSI
bus.
______________________ Note _______________________
If you are using Fibre Channel storage, see Chapter 6.
Before you connect devices to a shared SCSI bus, you must:
• Plan your hardware configuration, determining which devices will be
connected to each shared SCSI bus, which devices will be connected
together, and which devices will be at the ends of each bus.
TruCluster Server System Configuration Using UltraSCSI Hardware 4–1