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ReadyNAS NVX Business Edition User Manual
Setting Up and Managing Your ReadyNAS NVX 2-17
v1.1, February 2009
Advantages of X-RAID2 and Flex-RAID
There are advantages to both technologies.
•Flex-RAID:
– The default volume can be deleted and re-created, with or without snapshot reserved
space.
– Hot spare disk is supported.
– Full volume management is available. You can create RAID level 0, 1, or 5 volumes,
specify the volume size, delete a disk from a volume, assign a hot spare, and so on.
– Multiple volumes are supported, each with a different RAID level, snapshot schedule and
disk quota definition.
– Each disk can be replaced, one by one, then rebuilt; after the last disk is replaced, another
data volume using the newly added capacity can be configured.
• X-RAID2:
– One-volume technology, but supports volume expansion, either with the addition of more
disks or the replacement of an existing disk with larger capacity disks.
– You can start out with one disk, and add more disks as you need them or can afford them.
– Volume management is automatic. Add a second disk, and it becomes a mirror to the first.
Add a third disk and your capacity doubles; add a fourth, and your capacity triples—the
expansion occurring while redundancy is maintained.
– In the future, you will be able to replace disks, one at a time, have each one finish
rebuilding and, after new redundant space becomes available, your volume will
automatically expand to utilize the new capacity.
Volume Management for Flex-RAID
If you want to reconfigure the default Flex-RAID volume C, split it into multiple volumes, specify
a different RAID level, or specify a larger reserved space for snapshots, you need to reconfigure
your volume. The first step is to delete the existing volume you want to replace.
Deleting a Volume
To delete a volume, select the Volume tab of the volume you wish to delete (if there are multiple
volumes) and click Delete Volume (in this case only Volume C is configured).
Warning: Make sure that you back up the files you wish to keep before deleting a
volume. All shares, files, and snapshots residing on that volume will be
deleted and are non-recoverable!