Jbod; Raid 0 - SilverStone SST-DS221 Manual De Instrucciones

RAID mode compare table
RAID mode Disk No.

JBOD

2 or larger

RAID 0

2 or larger
RAID 1 2
Appendix
RAID 0(striped disks)
Distributes data across several disks in a way that gives
improved speed and no lost capacity, but all data on all
disks will be lost if any one disk fails. Although such an
array has no actual redundancy, it is customary to call it
RAID 0.
RAID 1(mirrored settings/disks)
Duplicates data across every disk in the array, providing full
redundancy. Two (or more) disks each store exactly the
same data, at the same time, and at all times. Data is not
lost as long as one disk survives. Total capacity of the
array equals the capacity of the smallest disk in the array.
At any given instant, the contents of each disk in the array
are identical to that of every other disk in the array
JBOD（Just a Bunch Of Disks）
It is a derogatory term - the official term is "spanning" - used to
refer to a computer's hard disks that haven't been configured
according to the RAID (for "redundant array of independent disks")
system to increase fault tolerance and improve data access
performance.
The RAID system stores the same data redundantly on multiple disks that nevertheless
appear to the operating system as a single disk. Although, JBOD also makes the disks
appear to be a single one, it accomplishes that by combining the drives into one larger
logical one. JBOD doesn't deliver any advantages over using separate disks independently
and doesn't provide any of the fault tolerance or performance benefits of RAID.
Capacity
Full two disk
Two disk capacity
base on lower
capacity HDD
50% of two disk
capacity
3
Performance Safty
Same as one disk
Highest
Better than
one disk
DISK 0
Application user
No Capacity user
No Performance
user
High Security user
RAID 0
DISK 0 DISK 1
RAID 1
DISK 0 DISK 1
JBOD
on
DISK 1 DISK 2