To Raid or not to Raid?

G

Guest

Guest
The fastest raid is mirroring, correct? What performance gain can I expect if I switch from a single 45 gig drive to raid mirroring using 2 45 gig disks, using a promise Raid controller and ATA disks? What percentage increase would you say I would get?

Ron
 

svol

Champion
The fastest is RAID 0 (stripping), RAID 1 is mirroring and that provides more data safety.
Look at this article about RAID: <A HREF="http://www.anandtech.com/storage/showdoc.html?i=1491" target="_new">http://www.anandtech.com/storage/showdoc.html?i=1491</A>

My case has so many fans that it hovers above the ground :eek: .
 
G

Guest

Guest
Awesome thanks. Yea, I had it backwards, raid 0 (striping) is what gives performance improvement and mirroring only adds data redundancy.

However, what the heck? The actual performance of most of the contemporary RAID cards, be it level 0 1 or 5, were generally worse than a single drive, and only sometimes faster. That's amazing to me.

Ron

<P ID="edit"><FONT SIZE=-1><EM>Edited by Computerboy on 12/23/01 11:03 PM.</EM></FONT></P>
 

svol

Champion
The seek time of your HD is still the same, but if you're writing a large file it will be twice as fast because there are two drives which can write the stripped data both at the same time. And it sounds cool to say that you have a RAID array :smile: .

My case has so many fans that it hovers above the ground :eek: .