Biostar T-Series
TForce4 U 775
User’s Manual
13
RAID 5:
RAID 5 stripes both data and parity information across three or more drives. It writes data
and parity blocks across all the drives in the array. Fault tolerance is maintained by
ensuring that the parity information for any given block of data is placed on a different
drive from those used to store the data itself.
Features and Benefits
Drives:
Minimum 3.
Uses:
RAID 5 is recommended for transaction processing and general
purpose service.
Benefits:
An ideal combination of good performance, good fault tolerance,
and high capacity and storage efficiency.
Drawbacks:
Individual block data transfer rate same as a single disk.
Write performance can be CPU intensive.
Fault Tolerance:
Yes.
Disk 1
DATA 3
PARITY
DATA 7
DATA 1
DATA 9
PARITY
Disk 2
PARITY
DATA 5
DATA 8
DATA 2
PARITY
DATA 11
Disk 3
DATA 4
DATA 6
PARITY
PARITY
DATA 10
DATA 12
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 you have odd sized drives and you want to
combine them to make one big drive.
-
Benefits:
JBOD provides the ability to combine odd size drives using all of
the capacity of the drives.
-
Drawbacks:
Decreases performance because of the difficulty in using
drives concurrently.
-
Fault Tolerance:
No.
Disk 1: 40GB
Disk 2: 80GB
Disk 3: 40GB
Disk 4: 120GB
Single Logical
Drive
※
For more detailed setup information, please refer to the Driver CD, or go to
http://www.nvidia.com/page/pg_20011106217193.html
to download NVIDIA
nForce Tutorial Flash.
