NETGEAR ReadyNAS 102 Hardware Manual page 81

ReadyNAS OS 6 Desktop Storage Systems
If the volume that contained the failed disk uses a protected RAID configuration, the
system automatically resynchronizes the volume using the new disk. Resynchronization
might take several hours, depending on the disk size. You can continue to use your
storage system, although access is slower until the volume resynchronization finishes.
For more information about RAID configurations, see the ReadyNAS OS 6 Software
Manual, which is available at http://support.netgear.com/product/ReadyNAS-OS6.
Disks
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