Avago Technologies MegaRAID SCSI 320-0 (520-0 CH) - Manual (Page 96)

4-38 Installing and Configuring Clusters
Copyright © 2003-2008 by LSI Corporation. All rights reserved.
4.8.3 Shared Disk Requirements
•
An HCL-approved external disk storage unit connected to all
computers. This is used as the clustered shared disk.
•
All shared disks, including the quorum disk, must be physically
attached to a shared bus.
•
Shared disks must be on a different controller then the one used by
the system drive.
•
Creating multiple logical drives at the hardware level in the RAID
configuration is recommended rather than using a single logical disk
that is then divided into multiple partitions at the operating system
level. This is different from the configuration commonly used for
stand-alone servers. However, it enables you to have multiple disk
resources and to do Active/Active configurations and manual load
balancing across the nodes in the cluster.
•
A dedicated disk with a minimum size of 50 megabytes (MB) to use
as the quorum device. A partition of at least 500 MB is
recommended for optimal NTFS file system performance.
•
Verify that disks attached to the shared bus can be seen from all
nodes. This can be checked at the host adapter setup level.
•
SCSI devices must be assigned unique SCSI identification numbers
and properly terminated.
•
All shared disks must be configured as basic disks.
•
Software fault tolerance is not natively supported on cluster
shared disks.
•
All shared disks must be configured as master boot record (MBR)
disks on systems running the 64-bit versions of Windows Server 2003.
•
All partitions on the clustered disks must be formatted as NTFS.
•
Hardware fault-tolerant RAID configurations are recommended for
all disks.
•
A minimum of two logical shared drives is recommended.