4. Introduction to RAID
RAID is a technology that
significantly enhances data storage
and reliability. Let's explore its
various aspects.
5. Redundant Array of Independent Disks is
a storage technology that combines
multiple disk drives into a single logical
unit. The main goals of RAID are to
improve data reliability, increase
input/output performance, or achieve
both simultaneously.
6. RAID Levels
There are several RAID levels, each
serving different purposes.
7. RAID 0 (Striping for Performance)
RAID 0 stripes data
across multiple disks,
enhancing
performance. However,
it doesn't provide
redundancy, so if one
drive fails, data is lost.
8. RAID1 (Mirroring for Redundancy)
RAID 1 mirrors data
across two disks,
offering redundancy.
If one drive fails,
data is still
accessible from the
other drive
9. RAID 1 0 (Mirroring & Stripping)
RAID 10 combines
the mirroring of
RAID 1 and the
striping of RAID 0. It
provides high
performance and
fault tolerance.
10. RAID 5 (Striping with Parity)
RAID 5 uses block-
level striping with
distributed parity. It
offers both
performance and fault
tolerance. If one drive
fails, the system can
rebuild the lost data.
11. RAID 6 (Dual Parity)
RAID 6 uses dual
parity for fault
tolerance. It can
withstand the
failure of two
drives without
losing data.