ZyXEL Communications NSA210 - Manual (Page 153)

Chapter 7 Storage
NSA210 User’s Guide
153
7.5 Storage Technical Reference
This section provides some background information about the topics covered in
this chapter.
7.5.1 Choosing a Storage Method for a Volume
The following is a guide to help you choose a storage method for the various
number of disks supported on the NSA. See
Section 7.5.2 on page 154 for
theoretical background on JBOD and the RAID levels used on the NSA. Typical
applications for each method are also shown there.
One Disk
If you only have one disk, you must use JBOD. All disk space is used for your data
- none is used for backup. If the disk fails, then you lose all the data on that
volume (disk). You can add another disk to your one-disk JBOD volume later
without having to re-create shares, access rights, and so on. Alternatively, you
could create a different JBOD volume if you install a second disk. (and create new
shares, access rights and so on).
Two Disks:
You may choose JBOD, PC Compatible Volume or RAID 1. With two disks you
could create:
• up to two JBOD volumes
• one PC Compatible volume + one JBOD
• one RAID 1 volume
• Choose JBOD for flexibility and maximum usage of disk space for data.
• Choose RAID 1 if data security is more important than performance. Since
RAID 1 mirrors data onto a second disk, you can recover all data even if one
disk fails.
Apply Click this to save your changes and create the volume.
Cancel Click this to exit this screen without saving changes.
Table 22 Storage > Volume > Create a USB Volume (continued)
LABEL DESCRIPTION