Dell Precision 670 - Manual (Page 50)

RAID: Dell Precision Workstation 470 and 670 Computers User's Guide
file:///T|/htdocs/systems/ws670/EN/ug_en/raid.htm[3/20/2013 9:31:47 AM]
If you stop the Build or Clear process on a RAID 1 from ACU, you can restart it by simultaneously pressing <Ctrl><r>.
If you created a RAID 1 using the Quick Init option, you may notice that data comparisons do not match when you
run a consistency check.
The ACU allows you to use drives of different sizes in a RAID 1. However, during a build operation, only the smaller
drive can be selected as the source or first drive.
It is recommended that you do not migrate or build an array on Windows dynamic disks (volumes), as it will result in
data loss.
NOTICE: Do not interrupt the creation of a RAID 0 using the Migrate option. If you do, there is no way to restart, and
no way to recover the data that was on the source drive.
To assign properties to the new array:
1. In the Array Properties menu, select an array type and press <Enter>. Note that only the available array types, RAID
0 and RAID 1, are displayed. RAID 0 and RAID 1 require a minimum of two drives.
2. Type in an optional label of no more than 15 characters for the array, and 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.
You can select between the different creation methods for RAID 0 and RAID 1. The following table gives examples of
when each is appropriate.
RAID
Level
Create
Via
When Appropriate
RAID 0 No Init Creating a RAID 0 on new drives.
RAID 0 Migrate* Creating a RAID 0 on a new drive and one drive with data you want to preserve.
RAID 1 Build* Any time you wish to create a RAID 1, but especially if you have data on one drive that you want to
preserve.
RAID 1 Clear Creating a RAID 1 on new drives, or when you want to ensure that the array contains no data after
creation.
RAID 1 Quick Init Fastest way to create a RAID 1 (is appropriate when using new drives).
*If you select Migrate for RAID 0 or Build for RAID 1, you are asked to select the source drive. The contents of the source
drive are preserved; however, the data on the new drive is lost.
4. When you are finished, select Done.
Configuring Drives
If an installed disk does not appear in the disk selection list for creating a new array, or if it appears grayed out, you may
have to initialize it before you can use it as part of an array. Drives attached to the controller must be configured before they
can be used in an array.
1. Turn on your computer and press <Ctrl><a> when you are prompted to access the ARC utility.
2. From the ARC menu, select Array Configuration Utility (ACU).
3. Select Configure Drives.
4. Use the up- and down-arrow keys to highlight the disk you want to configure and select Insert.