Product manual

Galaxy G3G12 / G3G16 Installation and Hardware Reference Manual
127 Section 4 Maintenance with GAM
Creating a Disk Array –Advanced
The Disk Array Advanced Creation option enables you to directly specify all parameters for a new disk array.
One logical drive will be made automatically when you create the disk array. If you select less than the total
available capacity, you can use the remaining space to create additional logical drives at a later time.
If you are uncertain about choosing parameters for your disk array, use the Express or Automatic option to
create your disk array.
To create a new disk array:
1. Click the Subsystem
icon in Tree View.
2. Click the Disk Arrays
icon.
3. From the Create tab dropdown menu, select Advanced.
Step 1 – Disk Array Creation
4. Enter an alias for the disk array in the field provided.
5. Check the box if you want to enable Media Patrol.
For more information, see “Media Patrol” in chapter 7.
6. Check the box if you want to enable PDM.
For more information, see “Predictive Data Migration (PDM)” in chapter 7.
7. Highlight physical drives you want in the disk array from the Available list and press the >> button to
move them to the Selected list.
You can also double-click them to move them.
8. When you are done, click the Next button.
Step 2 – Logical Drive Creation
Logical Drive Creation enables you to specify logical drives under the new disk array. Enter the information
for a logical drive, then click the Update button. If there is free capacity remaining, you can specify another
logical drive now or wait until later.
9. Enter an alias for the logical drive in the field provided.
• Choose a RAID level for the logical drive from the dropdown menu.
The choice of RAID levels depends the number of physical drives you selected.
11. RAID 50 and 60 only – Specify the number of axles for your array.
For more information on axles, see “RAID 50 Axles” or “RAID 60 Axles” in chapter 7.
12. Specify a Capacity and the unit of measure (MB, GB, TB).
This value will be the data capacity of the first logical drive in your new disk array. If you specify less
than disk array's maximum capacity, the remainder will be available for additional logical drives which
you can create later.
13. Specify a Stripe size from the dropdown menu.
64 KB, 128 KB, 256 KB, and 1 MB are available. 64 KB is the default.
14. Specify a Sector size from the dropdown menu.
512 B, 1 KB, 2 KB, and 4 KB are available. 512 B is the default.
15. Specify a Read (cache) Policy from the dropdown menu.
Read Cache, Read Ahead Cache, and No Cache are available. Read Ahead is the default.
16. Specify a Write (cache) Policy from the dropdown menu.
Write Back and Write Through (Thru) are available. Write Back is the default.
17. From the Preferred Controller ID dropdown menu, select a controller.
The choices are Controller 1 or 2, or Automatic. This feature is only available on subsystems with two
controllers and LUN Affinity enabled.
18. Click the Update button.