Get ting St ar t e d
Star ting NAS Configuration
Cisco Small Business NSS 322, NSS 324, and NSS 326 Smart Storage Administration Guide 29
2
You are redirected to a window where you can select the disk c onfigur ation.
STEP 22
Select the disk configuration.
NOTE
It is rec omm end ed to con figure the NS S 32 4 or N SS 326 w ith R AID 5 if th ere are
three or more disks insta lled.
• Disk c onfigur ation:
The following options are available:
-
Do not s et dis k confi gurati on
—If you have created disk volume
configuration or plan to create multiple disk configurations, select not to
initialize the disk drive s .
-
Single Dis k
—Uses the disk drives as single disk volumes. When a drive
failure occurs, all data is lost.
-
JBOD (Linear)
—JBOD lets you combine multiple disks of mixed
capacities into a single logical storage device. The capacity o f the JBOD
array is the sum of the total capacities of the individual component disks
(that is, it does not have the limitation of RAID 1 where you lose some
capacity when using mixed sized disks). JBOD offers no performance
increase compared to the component disks. It has lower reliability than
the component disks, as the failure of a single di sk r esults i n the failure of
the whole array.
-
RAID 0
—Distributes data across several disks in a way that improves
speed and full capacity. All data on all disks will be lost if any single disk
fails.
-
RAID 1
—Uses two disks (mirrored disks) each of which store the same
data, so that data is not l ost as long as one disk survives. Total capacity of
the array equals the capacity of the smaller disk.
-
RAID 5
—Combines three or more disks in a way that protects data
against loss of any single disk. RAID 5 is applicable to NSS 324 and
NSS 326.
-
RAID 6
—Com bines four or mor e disks in a wa y that prot ects data against
loss of any two disks. RAID 6 is applicable to NSS 324 and NSS 326.
• File system:
-
EX T4
—EXT4 is the successor to EXT3 and pr ovides bett er performance
because the EXT4 file system can support very large volumes (default).
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