The ReadyDATA supports a new, proprietary RAID architecture that is both flexible and 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:
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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.
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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:
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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.
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Expanded RAID sets:
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An expanded RAID 0 set is indicated in the same way as a new RAID set: RAID 0+.
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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:
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- RAID 5+0, nx
- RAID 6+0, nx
- For example, a RAID 6 set that has been expanded twice by the addition of two RAID groups goes from RAID 6+ to RAID 6+0, 2x, and then to RAID 6+0, 3x.
- An expanded RAID 10 set is indicated in the same way as a new RAID 10 set: RAID 1+0.
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The following table explains the RAID nomenclature. The sequential expansion number is indicated by n, and x just indicates times (for example, 2x is two times).
|
RAID Level |
New RAID |
Expanded RAID |
|
RAID 0 |
RAID 0+ |
RAID 0+ |
|
RAID 1 |
RAID 1+ |
RAID 1+0, nx |
|
RAID 5 |
RAID 5+ |
RAID 5+0, nx |
|
RAID 6 |
RAID 6+ |
RAID 6+0, nx |
|
RAID 10 |
RAID 1+0 |
RAID 1+0 |
Last Updated:07/07/2025
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Article ID: 23532