APC RAID Subsystem SCSI-SATA II Informações Técnicas Página 183

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Appendix
A-11
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
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