Adaptec 44300 User Guide - Page 69

Enter, Optional, Create RAID Via, Ctrl+R, properties using the ACU. Instead

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Appendix C: Using the ARC Utility ● 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 About Adaptec Storage Manager on page 50, 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 Level RAID 0 RAID 0 Create RAID Via Quick Init Migrate RAID 1 Build RAID 1, 10 RAID 1, 10 Clear Quick Init 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. ● Before adding a new drive to an array, back up any data contained on the new drive. Otherwise, all data will be lost. ● Only disk drives that were previously configured as simple volumes can be used for RAID 0 or 1 migration when the single/source drive has data on it. See Configuring Disk Drives on page 72 to create a simple volume. ● If you stop the build or clear process on a RAID 1 from ACU, you can restart it by pressing Ctrl+R. ● A RAID 1 and 10 created using the Quick Init option may return some data 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. ● To modify the Write Cache setting for an array, press Ctrl+W.

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Appendix C: Using the ARC Utility
●
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
About Adaptec Storage
Manager
on page 50
, 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.
●
Before adding a new drive to an array, back up any data contained on the new drive.
Otherwise, all data will be lost.
●
Only disk drives that were previously configured as simple volumes can be used for
RAID 0 or 1 migration when the single/source drive has data on it. See
Configuring
Disk Drives
on page 72
to create a simple volume.
●
If you stop the build or clear process on a RAID 1 from ACU, you can restart it by
pressing
Ctrl+R
.
●
A RAID 1 and 10 created using the Quick Init option may return some data
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
.
●
To modify the Write Cache setting for an array, press
Ctrl+W
.
RAID
Level
Create
RAID Via
When Appropriate
RAID 0
Quick Init
Creating a RAID 0 on new drives.
RAID 0
Migrate
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.
RAID 1
Build
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.
RAID 1,
10
Clear
Creating a RAID 1 or 10 on new drives, or when you want to ensure
that the new array contains no existing data.
RAID 1,
10
Quick Init
Fastest way to create a RAID 1 or 10. Appropriate when using a new
drive.