SilverStone DS221 [4/24] Manual s023 sst ds221 3
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SilverStone DS221 [4/24] Manual s023 sst ds221 3

SilverStone SST-DS221B(Black) [4/24] Manual s023 sst ds221 3
3
RAID mode compare table
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.
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
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.
RAID 1(mirrored settings/disks)
JBOD
（
Just a Bunch Of Disks
）
RAID mode Disk No. Capacity Performance Safty Application user
JBOD 2 or larger Full two disk Same as one disk No Capacity user
RAID 0 2 or larger Two disk capacity
base on lower
capacity HDD
Highest Performance
user
No
RAID 1 2 50% of two disk
capacity
Better than
one disk
Security userHigh
RAID 0
RAID 1
JBOD
DISK 0 DISK 1 DISK 2
on
DISK 0 DISK 1
DISK 0 DISK 1

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