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.
To vertically expand a Flex-RAID volume:
1. Replace one disk in the volume with a larger-capacity disk.
For more information about how to add a disk to your system, see the hardware manual for your system, which is available at http://support.netgear.com/product/ReadyNAS-OS6.
Note: You must use supported disks in your ReadyNAS system. For a list of supported disks, visit http://www.netgear.com/readynas-hcl.
2. Wait for the volume to resync your data.
You can continue to use your ReadyNAS system while the volume is resyncing. Resyncing can take several hours. The start and completion of the resyncing process is recorded in the system log.
If you set up email notifications for your system, you receive an email message when the process finishes.
3. Repeat Step 1-Step 2 until you have replaced each disk in the volume with a larger-capacity disk.