ZyXEL Communications NAS540 - 2.3.5 Configure System Settings

23
3. Storage
Click on this to open the storage configuration screens.
Type user name and password
Click on Storage
RAID Types
RAIDTYP
E
NO.
OFHDD
NO. OF
HDDALLOW
ED TO FAIL
DESCRIPTION
CAPACITY
Basic
1
0
Use Basic with one disk. It has no fault tolerance.
1 x (HDD size)
JBOD
2-4
0
Use JBOD with two or more disks for maximum capacity.
This is just a collection of disks with no fault tolerance.
sum of HDD
sizes
RAID 0
2-4
0
Use RAID 0 with two or four disks for maximum speed
and no fault tolerance.
sum of HDD
sizes
RAID 1
2-4
(No. of HDD) -
1
Use RAID 1 to create an exact copy of data on one disk
to a second disk. Use this with two to four disks to mirror
primary data to another disk(s) with high performance.
You can add a hot spare to a 2-disk RAID 1.
Smallest HDD
size
RAID 5
3-4
1
Use RAID 5 with three or four disks to balance
performance and hard disk capacity usage with data
protection in case of disk failure.
You can add a hot spare to a 3-disk RAID 5.
(No. of HDD –
1) x(smallest
HDD size)
RAID 6
4
2
Use RAID 6 with four disks for more data protection in
case of disk failure.
(No. of HDD –
2) x(smallest
HDD size)
RAID 10
4
1 HDD in
each RAID 1
group
Use RAID 10 with four disks to get better performance
than RAID 6, with slightly less data protection.
(No. of HDD /
2) x(smallest
HDD size)