Storage - ZyXEL Communications NAS540 Application Notes

3. Storage

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