Table of Contents
Advertisement
Motherboard Manual
RAID 1:
Every read and write is actually carried out in parallel across 2 disk drives in a RAID 1
array system. The mirrored (backup) copy of the data can reside on the same disk or on
a second redundant drive in the array. RAID 1 provides a hot-standby copy of data if
the active volume or drive is corrupted or becomes unavailable because of a hardware
failure.
RAID techniques can be applied for high-availability solutions, or as a form o f
automatic backup that eliminates tedious manual backups to more expensive and less
reliable media.
Features and Benefits
-
Drives: Minimum 2, and maximum is 2.
-
Uses: RAID 1 is ideal f or small databases or any other application that
requires f ault tolerance and minimal capacity.
-
Benefits: Prov ides 100% data redundancy. Should one driv e f ail, the
controller switches to the other drive.
-
Drawbacks: Requires 2 driv es for the storage space of one driv e.
Perf ormance is impaired during driv e rebuilds.
-
Fault Tolerance: Yes.
20
Block 1
Bloc k 2
Bloc k 3
Bloc k 1
Block 2
Block 3
Advertisement
Table of Contents
