User`s guide

User Guide
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when set up in a mirrored logical drive. Similar to RAID 0 striping, if disk drives
of different capacities are used, there will also be unused capacity on the larger
drive.
Warning
■ RAID1 reads or writes data to/from the several hard disk
drives at the same time. The disk access performance is
lower than the single disk.
■ Logical capacity of the array is equal to one hard disk drive
connected.
Raid 10 & RAID 5
These RAID levels may also be available on your system. Browse through the next
sections of this User’s Guide for more information.
■ RAID 10
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 disk 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.
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 disk drives fail.