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One Write or two Reads possible per mirrored pair
Twice the Read transaction rate of single disks, same Write transaction rate as
single disks
100% redundancy of data means no rebuild is necessary in case of a disk failure,
just a copy to the replacement disk
Transfer rate per block is equal to that of a single disk
Under certain circumstances, RAID 1 can sustain multiple simultaneous drive
failures
Simplest RAID storage subsystem design
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Highest disk overhead of all RAID types (100%) - inefficient
Typically the RAID function is done by system software, loading the CPU/Server
and possibly degrading throughput at high activity levels. Hardware
implementation is strongly recommended
May not support hot swap of failed disk when implemented in "software"
Accounting
Payroll
Financial
Any application requiring very high availability
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