Grass Valley Network Attached Storage System Serial ATA Network User Guide v.1.0.04 - Manual (Page 139)

Chapter 10 RAID System Administration
138 Digital News Production
Logical Units
You can create, view, delete, and rebuild logical units.
Creating a Logical Unit
To create a logical unit, choose Storage | RAID System | Logical Unit |
Create . The Create a Logical Unit window opens and lets you select disk drives
on which to create a logical unit.
1. Select the disk drives. Click on each drive that will be part of the logical unit.
A logical unit may contain either 4 drives (with or without a parity drive) or
8 drives (with or without a parity drive). A logical unit with a parity drive
(i.e., consisting of either 4 or 8 drives) cannot be recovered if one drive fails.
For redundancy, specify 5 or 9 drives for the logical unit. One of those drives
will be a parity drive.
The drives in the list are identified by Enclosure number-disk drive number.
For example, disk drive 1-3 is the third drive from the left end of the first
enclosure. (For more information, see “Identifying Enclosures and Disk
Drives” on page 128).
2. Specify the logical unit to create. Use the arrow next to the drop-down list
box to select the number of the logical unit to be created.
Create logical unit 0 before creating any other logical units. If you
have any logical units, you must have a logical unit 0.
3. Click Save to save the information you entered.