configuration is unsupported. HCL certification requires a separate private network adapter.

7.3.3Shared Disk Requirements

Disks can be shared by the nodes. The requirements for sharing disks are as follows:

•Physically attach all shared disks, including the quorum disk, to the shared bus.

•Make sure that all disks attached to the shared bus are seen from all nodes. You can check this at the setup level in <Ctrl> <M> (the BIOS configuration utility.) SeeSection 7.5, “Installing SCSI Drives,” page 7-27, for installation information.

•Assign unique SCSI identification numbers to the SCSI devices and terminate the devices properly. Refer to the storage enclosure manual for information about installing and terminating SCSI devices.

•Configure all shared disks as basic (not dynamic).

•Format all partitions on the disks as NTFS.

It is best to use fault-tolerant RAID configurations for all disks. This includes RAID levels 1, 5, 10, or 50.

7.4Cluster Installation

7.4.1Installation Overview

During installation, some nodes are shut down, and other nodes are rebooted. This is necessary to ensure uncorrupted data on disks attached to the shared storage bus. Data corruption can occur when multiple nodes try to write simultaneously to the same disk, if that disk is not yet protected by the cluster software.

Cluster Installation

7-5

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