What
is RAID 1?
Provides
high fault tolerance for configurations with two disks.
If a disk fails, the controller uses either of the drives
for data recovery and continues operation. There must be
two disks in the configuration.
The
capacity of the RAID 1 is equal to the smallest disk capacity
in the array.
RAID
1 also provides the highest data availability since two
complete copies of the data is maintained.
It
is primarily used for mission critical storage where absolute
data redundancy, availability and performance are key and
the cost per gegabyte is secondary.
In
a RAID 1 only 50% of the storage capacity is usable.
This
RAID level is commonly referred to as mirroring. |
