Compaq 3200 - Manual (Page 71)

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Compaq Smart Array 3200 Controller Reference Guide
Writer: Rickard Project: Compaq Smart Array 3200 Controller Reference Guide Comments: 340862-002
File Name: F-CH05.DOC Last Saved On: 12/7/98 1:22 PM
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
This screen first displays the maximum size logical drive that can be created for
your drive array. You can reduce this amount if you want to create more than
one logical drive on the array. To reduce the size, type the number in or drag the
pointer to the left. Fine-tune the size with the arrow buttons to the left of the
scale.
Logical Drive Extension
Capacity extension refers to increasing the size of an array by adding physical
drives and growing an existing logical drive (without adding more logical
drives).
To extend the capacity of an existing logical drive offline:
■ Back up all data
■ Reconfigure the array
■ Restore the data
To extend the capacity online, the operating system on your server must support
a logical drive increasing in size. Use the Logical Drive Extension screen to
increase the size of an existing logical drive online and without data loss.
Stripe size refers to the amount of contiguous data stored on each physical drive
in a logical drive. Each RAID level has a default value (Table 5-1) plus a range
of supported sizes. The default values were determined to provide optimum
performance for that RAID level in many applications. However, your
application may benefit from setting the stripe size to a different value.