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RAID volume computation
Depending on the hard drive capacity, the system volume and data volume
capacity can have different sizes. A simple formula to calculate data volume
size per RAID level is shown in the table below (where SSV is the size of the
system’s volume in gigabytes):
Refer to the following table for changing the data volume of your hard drive
or changing the default configuration setting according to your data volume
size preference:
Use the RAID configuration utility bundled with your NAS to change the system
volume size and RAID level of your hard drive. For more information, see “RAID
Configuration” on page 54.
RAID level Formula
5 [{(Per drive capacity × 4) – 2 × SSV}/4] × 3
0+1 [{(Per drive capacity × 4) – 2 × SSV}/4] × 2
0 (Per drive capacity × 4) – 2 × SSV
Drive capacity
(GB)
System
volume (GB)
Data volume
RAID 5 (GB)
Data volume
RAID 10 (GB)
Data volume
RAID 0 (GB)
120 10 345 230 460
250 10 735 490 960