Installation guide

28 Chapter 2:Hardware Installation and Operating System Configuration
Hardware Quantity
RAID storage enclosure The RAID storage enclosure contains one controller with at least
two host ports.
Two HD68 SCSI cables Each cable connects one HBA to one port on the RAID
controller, creating two single-initiator SCSI buses.
2.1.6 Example of a No-Single-Point-Of-Failure Configuration
The components described in Table 2–12, No-Single-Point-Of-Failure Configuration Components can
be used to set up a no-single-point-of-failure cluster configuration that includes two single-initiator
SCSI buses and power switches to guarantee data integrity under all failure conditions. Note that this
is a sample configuration; it is possible to set up a no-single-point-of-failure configuration using other
hardware.
Table 2–12 No-Single-Point-Of-Failure Configuration Components
Hardware Quantity
Two servers
Each cluster system includes the following hardware:
Two network interfaces for:
Point-to-point Ethernet heartbeat channel
Client network access and Ethernet heartbeat connection
Three serial ports for:
Point-to-point serial heartbeat channel
Remote power switch connection
Connection to the terminal server
One Tekram Ultra2 DC-390U2W adapter (termination
enabled) for the shared disk storage connection
One network switch A network switch enables the connection of multiple systems
to a network.
One Cyclades terminal server A terminal server allows for management of remote systems
from a central location. (A terminal server is not required for
cluster operation.)
Three network cables Network cables connect the terminal server and a network
interface on each cluster system to the network switch.
Two RJ45 to DB9 crossover
cables
RJ45 to DB9 crossover cables connect a serial port on each
cluster system to the Cyclades terminal server.