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Mirrored volumes
A mirrored volume is a fault-tolerant volume
that duplicates your data on two physical
disks. It provides data redundancy by using
a copy (mirror) of the volume to duplicate
the information contained in the volume. The
mirror is located on a different disk. If
one of the physical disks fails, the data on
the failed disk becomes unavailable, but the
system continues to operate using the
unaffected disk.
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You can create mirrored volumes only on
computers running Windows 2000 Server
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You need at least two dynamic disks to
create a mirrored volume.
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Mirrored volumes are fault tolerant.
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Mirrored volumes cannot be extended or
striped.
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The same drive letter is used for both
copies (mirrors) of a mirrored volume.
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Slower than a RAID-5 volume in read
operations but faster in write
operations.
RAID-5 volumes
A RAID-5 volume is a fault-tolerant volume
with data and parity striped intermittently
across three or more physical disks. If a
portion of a physical disk fails, you can
recreate the data that was on the failed
portion from the remaining data and parity.
RAID-5 volumes are a good solution for data
redundancy in a computer environment in
which most activity consists of reading
data.
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You can create RAID-5 volumes only on
computers running Windows 2000 Server.
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You need at least three dynamic disks to
create a RAID-5 volume.
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Can span a maximum of 32 disks.
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Provides fault tolerance
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Cannot be extended or mirrored
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