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Volume Configuration
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ReadyNAS OS 6.1
X-RAID2 makes horizontal volume expansion easy. If your X-RAID2 volume includes two or
more disks, the volume expands automatically when you add disks.
You can expand a Flex-RAID volume by adding an additional JBOD disk or two additional
RAID 0 disks.
Vertical expansion is available for X-RAID2 and Flex-RAID volumes.
You can continue to use your ReadyNAS system while the new disks are incorporated in the
background. The process of volume expansion can take several hours. If you set up email
notifications for your system, you receive an email message when the process finishes. For
more information about alert notifications, see
Configure System Alerts on page 169.
Horizontally Expand an X-RAID2 Volume
Horizontal expansion is available for X-RAID2 volumes only.
To horizontally expand an X-RAID2 volume:
Add a disk to an X-RAID2 volume that includes two or more disks.
For more information about how to add a disk to your ReadyNAS system, see the hardware
manual for your system, which is available at
http://support.netgear.com/product/ReadyNAS-OS6.
The system automatically determines whether the new disk is used for protection or storage.
When you add a second disk, the new disk is used for data protection. When you add a third
or fourth disk, the new disk is used to increase your storage capacity. For more information,
see
X-RAID2 on page 20. New disks are incorporated in the background while you continue
to use your storage system.
Vertically Expand a Volume
Both X-RAID2 and Flex-RAID volumes support vertical expansion.
When you vertically expand a Flex-RAID volume, you must replace all disks in the volume
with larger-capacity disks.
Note: Vertical expansion is not available for RAID 0 volumes.
When you vertically expand an X-RAID2 volume, you must replace disks in the volume
according to the following table.