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JBOD (Just a Bunch Of Disks/Drives)

JBOD historically has had a couple different definitions, but recently has started to fall under one definition. JBOD is used in reference to a system that has each individual disk show up as an individual logical volume on the computer. For example a 4 bay unit populated with drives, will have 4 logical drives show up on the computer. You do not need matching drives.

  • Definitions:
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RAID 0 (Stripe)
Data is split into blocks over two or more drives at same time for high speed and large capacity.
Capacity
blue meter 4
Data Safety
orange meter 1
Performance
green meter 4
RAID 1 (Mirror)
Data is written at same time to two drives only for highest level of data safety and redundancy.
Capacity
blue meter 1
Data Safety
orange meter 4
Performance
green meter 14
RAID 10 (1+0)
Data is Striped (RAID 0) over two Mirrored sets (RAID 1) of drives for fast redundancy.
Capacity
blue meter 2
Data Safety
orange meter 4
Performance
green meter 2
RAID 5 (Stripe with Parity)
Data is Striped (RAID 0) while incorporating parity over three or more drives for the best combination of speed, capacity, and redundancy.
Capacity
blue meter 3
Data Safety
orange meter 3
Performance
green meter 3
JBOD
(Just a Bunch Of Disks/Drives)
Each disk shows up as an individual logical volume on the computer. A 4 bay unit populated with drives will have 4 logical drives show up on the computer.
Capacity
blue meter 4
Data Safety
orange meter 1.5
Performance
green meter 1
Span (N-RAID)
Combines capacity of two or more drives of varying size without any RAID data distribution scheme into one logical desktop volume.
Capacity
blue meter 4
Data Safety
orange meter 1.5
Performance
green meter 1