5.1.2Basic Configuration Rules

You should observe the following guidelines when connecting and configuring SCSI devices in a RAID array:

•Attach non-disk SCSI devices to a single SCSI channel that does not have any disk drives.

•Distribute the SCSI hard disk drives equally among all available SCSI channels except any SCSI channel that is being reserved for non- disk drives.

•You can place up to 30 physical disk drives in a logical array, depending on the RAID level.

•An array can contain SCSI devices that reside on an array on any channel.

•Include all drives that have the same capacity in the same array.

•Make sure any hot spare has a capacity that is at least as large as the largest drive that may be replaced by the hot spare.

•When replacing a failed drive, make sure that the replacement drive has a capacity that is at least as large as the drive being replaced.

Note: Be sure to back up your data regularly, even when using

RAID.

5.1.3Current Physical Device Configuration

Use Table 5.1 to record the current configuration for your physical devices on SCSI channels 0 and 1.

Table 5.1 Physical Device Configuration

SCSI ID

Device Description

Termination?

 

 

 

SCSI Channel 0

0

1

2

3

5-2

Configuring Physical Drives, Arrays, and Logical Drives

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