User's Manual

Chapter 5 Configuring ADAC Ultra2 S466
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5 Configuring ADAC Ultra2
S466
Configuring SCSI Physical Drives
SCSI Channel Physical SCSI drives must be organized into logical drives.
The arrays and logical drives that you construct must be
able to support the RAID level that you select.
Your ADAC Ultra2 S466 adapter has one SCSI channel.
Basic 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,
•
you can place up to eight physical disk drives in an
array,
•
include all drives that have the same capacity to 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, and
•
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.