Adaptec RAID 1220SA Installation And User Manual page 69

Assigning Array Properties
Once the array is created and its properties are assigned, you cannot change the array
properties using the ACU. Instead, use Adaptec Storage Manager. See
Manager on page 51, for details.
To assign properties to the new array:
1
In the Array Properties menu, select an array type, then press Enter.
Only the available array types, RAID 0, 1, and 10 are displayed. RAID 0 and 1 requires two
to four drives. RAID 10 requires a minimum of four disk drives.
2
(Optional). Type a label of no more than 15 characters for the array, then press Enter.
3
For RAID 0, select the desired stripe size. Available stripe sizes are 16, 32, and 64 KB
(default).
Note:
It is recommended that you do not change the default.
4
The options under Create RAID Via allows you to select between the different creation
methods for RAID 0, 1, and 10. The following table gives examples of when each is
appropriate.
RAID Create
Level RAID Via
RAID 0 Quick Init
RAID 0 Migrate
RAID 1 Build
RAID 1, Clear
10
RAID 1, Quick Init
10
Before adding a new drive to an array, back up any data contained on the new drive.
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Otherwise, all data will be lost.
Only disk drives that were previously configured as simple volumes can be used for
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RAID 0 or 1 migration when the single/source drive has data on it. See
Disk Drives on page 73
If you stop the build or clear process on a RAID 1 from ACU, you can restart it by
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pressing Ctrl+R.
A RAID 1 and 10 created using the Quick Init option may return some data
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miscompares if you later run a consistency check. This is normal and is not a cause for
concern.
If you stop the migration process on a RAID 0, you can restart it by pressing Ctrl+R.
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To modify the Write Cache setting for an array, press Ctrl+W.
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Appendix C: Using the ARC Utility
When Appropriate
Creating a RAID 0 on new drives.
Creating a RAID 0 and you want to preserve data on an existing
drive. You will be asked to select the source drive. The contents of
the source drive are preserved and any data on the new drive is
lost.
Creating a RAID 1 and you want to preserve data on an existing
simple volume. You will be asked to select the source drive. The
contents of the source drive are preserved and any data on the new
drive is lost.
Creating a RAID 1 or 10 on new drives, or when you want to ensure
that the new array contains no existing data.
Fastest way to create a RAID 1 or 10. Appropriate when using a new
drive.
to create a simple volume.
70
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About Adaptec Storage
Configuring