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RAID LEVELS Function/Applications Advantages/Disadvantages
Applications:
●
Accounting
●
Payroll
●
Financial
Disadvantages:
Only half of the total drive
capacity can be used for
storage.
Storage space may be wasted
if the capacities of the primary
and recovery HDDs are
different (see
HP SATA drive
option kits on page 6).
RAID IRRT Function:
Identical (mirrored) data is
stored on two drives.
Boosts the functionality of
RAID 1 with valuable
features.
Applications:
Any application that requires a
simple data protection
method.
Advantages:
Provides high fault
tolerance.
Users can choose to mirror
data continuously or on
request.
Data recovery is quick and
easy.
Allows hot-plugging of
mirrored drive (with eSATA
or docking station HDD).
Enables easy migration to
non-RAID.
Disadvantages:
Only half of the total drive
capacity can be used for
storage.
Storage space may be wasted
if the capacities of the primary
and recovery HDDs are
different.
4 Chapter 2 RAID technology overview