RAID mirroring!

[leza]

Can somebody explain to me in simple way please what is RAID Mirroring?

 

[drumguy1384]

With RAID mirroring (mode 1) you have two drives of equal capacity. They do
exactly what they say ... mirror ... what is on one is also on the other.

When data is sent to the hard drive both of them receive and store the data.
This provides security thru redundancy, because it's unlikely that you would
have two drives go bad at the same time ... and if one *does* go bad, well
you've got the other one there with a complete copy of your data.

Simple enough for ya?


Drumguy

 

[Dirk Puslich]

Another popular form of RAID is RAID "0" or "Striping" This combines
the drives so they are essentially one drive (i.e. no data
redundancy). The benefit here is that you can read from two disks at
once so you can load things quite a bit faster.

In most cases it's best to have a hardware RAID controller for
performance reasons (either a PCI card or integrated on the
motherboard - a lot of the new intel 865 and 875 chipset based boards
have it integrated).

In Windows 2000 server you can do mirroring with software. Not sure
about other OS's. I suspect you could get other software to run
mirroring on XP etc.

 

[John Smith]

RAID 1 or 'Mirroring' is only good for mechanical faults with HDs. If you
data gets corrupted on one drive the corrupted data is copied to the second
drive so do not think RAID 1 is an excuse for no back-ups.

J.