Implementing RAID 5 ON Windows Server 2003 : Disk
Striping with Parity
RAID
level 5 is disk striping
with parity. With this
technique you need a minimum
of three hard disk drives to
set up
fault tolerance. Disk
Management sizes the volumes
on these drives identically.
RAID 5 is
essentially an enhanced
version of
RAID 1—with the
key addition of
fault
tolerance.
Fault tolerance
ensures that the failure of
a single drive won't bring
down the entire drive set.
Instead, the set continues
to function with disk
operations directed at the
remaining volumes in the
set.
To allow
for fault tolerance,
RAID 5
writes parity checksums with
the blocks of data. If any
of the drives in the
striped
set fails, the parity
information can be used to
recover the data. This
process is called regenerating
the
striped set. If two disks
fail, however, the parity
information isn't sufficient
to recover the data and
you'll need to rebuild the
striped set from backup.
Creating a Striped Set with
Parity in Disk Management
In Disk
Management, you can create a
striped set with parity by
completing the following
steps:
-
In
the Disk Management
Graphical View,
right-click an area
marked Unallocated on a
dynamic disk and then
choose New Volume. This
starts the New Volume
Wizard. Read the welcome
page, and then click
Next.
-
Select RAID-5 as the
volume type. Create the
volume as described
previously under
"Creating Volumes and
Volume Sets." The key
difference is that you
must select free space
on three separate
dynamic drives.
-
Once
you create a
striped
set, users can use the
set just like they would
a normal drive. Keep in
mind that you can't
expand a
striped set
once it's created.
Because of this, you
should carefully
consider the setup
before you implement it.
This page is about:
disk striping,
raid 5,
raid-5,
implementing disk striping with parity,
implementing raid 5,
implementing raid 5 on windows server 2003,
implementing disk striping with parity on windows server 2003,
striped set,
striped volume,
fault tolerance,
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