ZyXEL Communications NSA210 User Manual page 146

Chapter 7 Storage
Volume
A volume is a storage area on a disk or disks. You can create volumes on the
internal disks and external disks attached to the USB port(s). You can spread a
volume across internal disks but not between internal and external disks.
An internal disk/volume is the disk/volume that is physically installed in the NSA
hard disk tray. The external disk/volume refers to disk drive(s) attached to NSA's
USB port(s).
Storage Methods
The NSA uses the following storage methods:
• RAID (Redundant Array of Independent Disks)
• PC Compatible Volume
• JBOD (Just a Bunch of Data)
The storage method you use depends on how many disks you have and how many
volumes you want to create. It's important that you consider this carefully as all
data is deleted when you re-create a volume. See
details on choosing a storage method.
Note: By default, the internal hard disk (SATA) you attach to the NSA is configured as
JBOD and cannot be modified. You can attach a second internal hard disk (an
eSATA hard disk) and configure the storage method of the internal hard disks
(both SATA and eSATA).
Finding Out More
See Section 7.5 on page 153
storage.
146
Figure 7.5.1 on page 153
for more technical background information on
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NSA210 User's Guide