Managing the System
Disk Management
Cisco Small Business NSS 322, NSS 324, and NSS 326 Smart Storage Administration Guide 105
3
Depend ing on the NAS mod el that you own, volumes can be created in the
follow ing volum e ty pes:
Vol ume Type De s crip tion
Single Disk
Volume
Each disk will be us ed as a stand alone dis k. However, if a
disk is dam age d, all data w ill be lost .
RAID 1 Mirroring
Disk Volume
RAID 1 (mirroring disk) pr ot ects your data by aut omatical ly
backing up the contents of one drive onto the second
drive of a mirrored pair. Th is protects your data if one of
the drives fails. Unfortunately, the storing capacity is equal
to a single drive, as the se c ond drive is us ed to
automatically back up the first. Mirroring Disk is suitable
for personal or corporate use to store important data.
RAID 0 Striping
Disk Volume
R AID 0 (striping disk ) com bin es 2 or more dr ives into one
larger disk. It offers the faste st disk ac c ess but it does not
have any protection of your data if the striped array fails.
The disk capacity equals the number of drives in the array
times the size of the smallest drive. Striping disk is usually
used to maximize your disk capacity or for fast disk
acc ess but not for storing important data.
Linear Disk V olume
(JBOD)
JB O D is als o defined as “J us t a Bunc h of Disks.” You can
combine two or more disks into one larger disk. When a
file is saved, it will be saved on physical disks sequentially,
but does not have a disk failure file protection func tion.
The overall capacity of linear disk is the sum of all disks.
Linear disk is generally used for storing large data and is
not appropriate to use for file protection of sensitive data.
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