User manual

WebPAM User Manual
84
5b
5c
a parity
3a
3c
b parity
1a
1b
c parity
6b
6c
a parity
4a
4c
b parity
2a
2b
c parity
Disk Drives
Distributed Parity
Data
Stripe
Figure 111. RAID 50 Striping of Distributed Parity Arrays
JBOD - Single Drive
An alternative to RAID, Just a Bunch of Disks (JBOD) capacity is equal to the
sum of all drives in the group, even if the drives are of different sizes. JBOD
appears in the User Interface as one or more individual drives. There are no
performance or fault tolerance features. When a disk fails, all data on the disk is
lost. Other disks are unaffected.
Disk Drive
1
2
3
4
Figure 112. JBOD manages drives Individually, unlike RAID