Raid And Volume Implementation - NETGEAR ReadyDATA 5200 Software Manual

Table 2. Disk color codes (continued)
Sample Color
Orange
Green
The status LED icon on a disk (which is located at the right side) can be off, green, or red:
• Off. Indicates that the status of the disk is unknown (for example, see the black and gray
disks in the previous table).
• Green. Indicates that the disk is online (for example, see the blue, yellow, orange, and
green disks in the previous table).
• Red
For more information about disk status and disk health, see
Information on page 146 and the hardware manual.

RAID and Volume Implementation

The ReadyDATA 5200 supports a new, proprietary RAID architecture that is both flexible and
very easy to administer. This new architecture is based on the Zettabyte File System (ZFS),
allowing you to configure different RAID levels for different volumes on the same platform.
Volume and RAID level are tied together on the ReadyDATA 5200:
• You can select the RAID level for a volume only when you create the volume. After you
create a volume, you cannot change the RAID level.
• When you create a volume, you select the disks that participate in the RAID set. You can
select from the following RAID levels: RAID 0, RAID 1, RAID 5, RAID 6, or RAID 10. You
can add additional disks to a volume, but in the process of doing so, you cannot change
the RAID level. A single exception exists: When you expand a RAID 1 volume, the RAID
level is automatically upgraded to RAID 10.
RAID levels are indicated onscreen as follows:
• New RAID sets. A new RAID set is indicated with a plus sign: RAID 0+, RAID 1+,
RAID 5+, and RAID 6+. The exception is RAID 10, which is indicated with a plus sign and
a zero: RAID 1+0.
• Expanded RAID sets:
- An expanded RAID 0 set is indicated in the same way as a new RAID set: RAID 0+.
- An expanded RAID 1 set is indicated with a plus sign and a zero, and becomes in fact
a RAID 10 set: RAID 1+0.
- An expanded RAID 5 and RAID 6 set is indicated with a plus sign, a zero, and an
expansion sequence number that indicates the number of RAID groups that have
been added:
• RAID 5+0, nx
• RAID 6+0, nx
ReadyDATA OS 1.2
Description
Read boost disk for the displayed volume.
Assigned as a global spare disk.
. Indicates that the disk is bad or faulty.
Manage Disks and Volumes
21
Disk Status and Health