It's called RAID 1, and depends on your motherboard having simple RAID built
in, or an add-on RAID card. Newer motherboards (NOT those in pre-built
systems by large manufacturers like Dell) will have RAID 0, RAID 1, and RAID
(0+1) built in unless it is a budget board.
Since you are asking this question, you should also ask few additional
questions.
What advantage do you expect to get from a simple two drive RAID 1 mirror
setup?
Any malware infection, program error, or user error will be exactly
replicated on BOTH drives. The only advantage of simple RAID 1 is when one
of the drives physically fails; usually a much less common occurrence than
[malware infection, program error, user error]. Enterprise usage of RAID is
indicated because of the much larger number of drives involved, so the
chances of 1 out of a 100 failing is much greater than the home user's 1
chance out of 2 failing. Enterprise operations suffer a much more expensive
failure when data is not available, so they use a more complex RAID
arrangment that will tolerate the complete failure of any one drive in a
set, and transparently begin to reconstruct the contents of the failed drive
if an empty replacement is on line, or as soon as a replacement is
hot-swapped for the failed drive. A home user gets much more utility out of
frequent backups and good malware protection than from simple drive
mirroring.
Phil Weldon
| Dear,
|
| I have a computer supplied a Windows XP Professional SP2 and using SATA
| HDD. Can I add one more SATA HDD and setup those as mirror drive?
|
| In case of it support, how can I set it up?
|
| Thanks!
| -david
|
|