Netgear EDA 500 User Manual

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 

 on page 146.

Repeat 

 on page 32 – 

 on page 32 until you have replaced the required number of disks

with larger-capacity disks.
For more information about X-RAID vertical expansion requirements, see 

 on page 32.

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 

.

You must use supported disks in your ReadyNAS system. For a list of supported
disks, visit 

.

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 (see

 on page 182).

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 

 on page 146.

Repeat 

 on page 33 - 

 on page 33 until you have replaced each disk in the volume with

a larger-capacity disk.

This section discusses protection against disk failure. The types of protection available depend on the
number of hard disks installed in the ReadyNAS system.

X-RAID requires a minimum of two hard disks to provide protection against disk failure. If you have a
one-disk ReadyNAS storage system and want protection from disk failure, you must add a second disk
that is at least as large as the first. You can add it while the system is running. For more information about
how to add a disk to your system, see the hardware manual for your system, which is available at

.

An X-RAID volume that includes two or more disks is automatically formatted to protect against the failure
of one disk. If you want to protect your data against the failure of two disks, you must switch to Flex-RAID
and select RAID 6. To use RAID 6, you must install four or more disks. For more information about how
to switch to Flex-RAID, see 

 on page 24.

In certain cases, you can add a disk to a Flex-RAID volume to increase data protection. The following
table indicates whether adding a disk for data protection is possible for each Flex-RAID configuration.