User Manual

Appendix
A-12
A.11 JBOD
JBOD (“Just a Bunch of Disks”) focuses on individual drives. The operating
system sees each drive as an individual drive in JBOD mode. Therefore,
the total capacity of JBOD is the sum of the capacities of each disk. This
allows the user to add disks until the desired total capacity is reached.
However, there is no RAID protection in this mode.
JBOD: Spanned disk array without fault tolerance
Characteristics
• Large capacity
• No fault tolerance
Recommended use
• Data backing up
• Large capacity servers
RAID controller
HBA ( SCSI or FC )
40GPhysical Drive
HOST
Logical Volumes
30G
20G
40G
30G
20G
Drive 1
Drive 2
Drive N
Disk 1
Disk 2
Disk N
Figure A-10 JBOD disk array