Motherboard Manual
26
RAID 0+1:
RAID 0 drives can be mirrored using RAID 1 techniques. Resulting in a RAID 0+1
solution for improved performance plus resiliency.
Features and Benefits
-
Drives:
Minimum 4, and maximum is 6 or 8, depending on the platform.
-
Benefits:
Optimizes for both fault tolerance and perf ormance, allowing for
automatic redundancy. May be simultaneously used with other RAID
lev els in an array, and allows f or spare disks.
-
Drawbacks:
Requires twice the av ailable disk space f or data redundancy,
the same as RAID level 1.
-
Fault Tolerance:
Yes.
Block 2
Block 4
Block 6
Block 1
B loc k 3
B loc k 5
B lock 2
B lock 4
B lock 6
Block 1
B lock 3
B lock 5
Spanning (JBOD):
JBOD stands for “ Just a Bunch of Disks”. Each drive is accessed as if it were on a
standard SCSI host bus adapter. This is useful when a single drive configuration is
needed, but it offers no speed improvement or fault tolerance.
Features and Benefits
-
Uses:
JBOD works best if y ou hav e odd sized driv es and y ou want to
combine them to make one big drive.
-
Benefits:
JBOD prov ides the ability to combine odd size driv es using all of
the capacity of the driv es.
-
Drawbacks:
Decreases performance because of the difficulty in using
driv es concurrently.
-
Fault Tolerance:
Yes.
Disk 1: 40GB
Disk 2: 80GB
Disk 3: 40GB
Disk 4: 120GB
Single Logical
Drive
