Installation guide

22 Chapter 2:Hardware Installation and Operating System Configuration
Table 2–5 Shared Disk Storage Hardware Table
Hardware Quantity Description Required
External
disk storage
enclosure
One Use Fibre Channel or single-initiator
parallel SCSI to connect the cluster
systems to a single or dual-controller
RAID array. To use single-initiator buses,
a RAID controller must have multiple
host ports and provide simultaneous
access to all the logical units on the host
ports. To use a dual-controller RAID
array, a logical unit must fail over from
one controller to the other in a way that is
transparent to the operating system.
The following are recommended SCSI
RAID arrays that provide simultaneous
access to all the logical units on the host
ports (this is not a comprehensive list;
rather its limited to those RAID boxes
which have been tested):
· Winchester Systems FlashDisk RAID
Disk Array, which is available from
http://www.winsys.com.
· Dot Hill’s SANnet Storage
Systems, which is available from
http://www.dothill.com
· Silicon Image CRD-7040 & CRA-7040,
CRD -7220, CRD-7240 & CRA-7240,
CRD-7400 & CRA-7400 controller
based RAID arrays. Available from
http://www.synetexinc.com
In order to ensure symmetry of device
IDs and LUNs, many RAID arrays with
dual redundant controllers are required to
be configured in an active/passive mode.
See Section 2.4.4, Configuring Shared
Disk Storage for more information.
Yes