User manual
Chapter 5: RAID Concepts
51
RAID Levels
Stripe (RAID 0)
Reads and writes sectors of data interleaved between multiple drives. When any
disk member fails, it affects the entire logical disk. Performance is better than a
single drive since the workload is balanced between the logical disk members.
This logical disk type is for high performance systems. Identical drives are
recommended for performance as well as data storage efficiency. The logical
disk data capacity is equal to the number of drive members times the smallest
member capacity. For example, one 100 GB and three 120 GB drives will form a
400 GB (4 x 100 GB) logical disk.
Stripe Size – For RAID 0 logical disks you can manually select the stripe block
size of 32, 64, 128 MB. The default is 64 KB.
The size selected affects how FastTrak sends data blocks to and receives them
from the drives. You must perform your own testing to determine how the data
block size affects your particular use of the logical disk. In general, a larger block
size is better when handling large data transfers (such as in A/V editing or
graphics) while a smaller block size is better when handling e-mail and other
common server data.
RAID 0 logical disks on FastTrak can have from one to four disk drives.
1
3
5
7
2
4
6
8
Data
Stripe
Disk Drives