Chapter 6: Technology
113
RAID 10 – Mirror / Stripe
Mirror/Stripe combines both of the RAID 0 and RAID 1 logical drive types. It can
increase performance by reading and writing data in parallel while protecting data
with duplication. At least four physical drives are needed for RAID 10 to be
installed. With a four-disk-drive logical drive, one drive pair is mirrored together
then striped over a second drive pair.
Figure 4. RAID 10 takes a data mirror on one drive pair and stripes it over
two drive pairs
The data capacity is similar to a RAID 1 logical drive, with half of the total storage
capacity dedicated for redundancy. An added plus for using RAID 10 is that, in
many situations, such a logical drive offers double fault tolerance. Double fault
tolerance may allow your logical drive to continue to operate depending on which
two physical drives fail.
RAID 10 logical drives on the FastTrak TX4650 consist of four physical drives.
The FastTrak TX2650 does not support enough physical drives to create a
RAID 10 logical drive.
Data Stripe
Data
Mirror
Physical Drives
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