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Chapter 7 Storage
NSA320 User’s Guide
160
7.2 The Storage Screen
The Storage screen allows you to create and edit volumes in the NSA.
7.2.1 Disk Replacement Restrictions
See the Quick Start Guide for information on replacing disks in the NSA. When
replacing a disk in a degraded or down RAID volume, the new disk must be at
least the same size or bigger than the other disks that are already in the RAID
volume, so as all data in the volume can be restored.
For example, if you have RAID with 250 GB disks, you must put in a 250 GB or
bigger disk as a replacement in order to restore all original data in that volume. If
the replacement disk is of a higher capacity, the extra space on the disk will not be
used except if it is for a RAID 1 volume and you follow the Expanding a RAID 1
Volume procedure.
Note: The NSA automatically repairs a degraded RAID volume if you insert an empty
disk without an existing file system. Otherwise, when you replace a disk you
must go to the Storage > Internal Volume > RAID screen, select the degraded
array, and click Repair.
Resynchronizing or Recovering a RAID 1 Volume
Resynchronizing or recovering a RAID 1 volume that was down is done block-by-
block, so the time it takes depends more on the size of your hard drive(s) than the
amount of data you have on them.
Note: Do not restart the NSA while the NSA is resynchronizing or recovering a volume
as this will cause the synchronization to begin again after the NSA fully reboots.
Note: You can access data on a RAID volume while it is resynchronizing or
recovering, but it is not recommended.
Expanding a RAID 1 Volume
Replace a RAID 1 volume’s hard disks with higher capacity hard disks to be able to
increase the RAID 1 volume’s capacity. For example, you have two 500 GB hard
disks. You replace one 500 GB hard disk with a 1 TB hard disk and repair the
volume. After the NSA finishes re
synchronizing the volume, you replace the second
500 GB hard disk with another 1 TB hard disk and repair the volume again. After
the NSA finishes the second repair, use the Expand icon to have the RAID1
volume use the rest of the hard disk capacity.