Installation guide

Section 2.2:Steps for Setting Up the Cluster Systems 31
2.2.1 Installing the Basic System Hardware
Cluster systems must provide the CPU processing power and memory required by applications. It is
recommended that each system have a minimum of 450 MHz CPU speed and 256 MB of memory.
In addition, cluster systems must be able to accommodate the SCSI or FC adapters, network inter-
faces, and serial ports that the hardware configuration requires. Systems have a limited number of
preinstalled serial and network ports and PCI expansion slots. The following table will help to deter-
mine how much capacity the cluster systems employed will require:
Table 2–13 Installing the Basic System Hardware
Cluster Hardware Component
Serial
Ports
Network
Slots
PCI
Slots
Remote power switch connection (optional, but strongly
recommended)
One
SCSI or Fibre Channel adapter to shared disk storage One for
each bus
adapter
Network connection for client access and Ethernet heartbeat One for
each net-
work con-
nection
Point-to-point Ethernet heartbeat channel (optional) One for
each
channel
Point-to-point serial heartbeat channel (optional) One for
each
channel
Terminal server connection (optional) One
Most systems come with at least one serial port. Ideally, choose systems that have at least two serial
ports. If a system has graphics display capability, it is possible to use the serial console port for a serial
heartbeat channel or a power switch connection. To expand your serial port capacity, use multi-port
serial PCI cards.
In addition, be sure that local system disks will not be on the same SCSI bus as the shared disks. For
example, use two-channel SCSI adapters, such as the Adaptec 39160-series cards, and put the internal