How much faster is the RAID )??

[montesomma]

How much faster is the raid system(RAID-0,with 2 HD)in conparison to the ATA-133??
Thanks for yuor support.

[FunkDaMonkMan]

I think its nearly twice as fast, if you have two ATA100 drives in raid.

two 512k buffer, 5200 rpm ATA33 or 66 drives in raid would definately not be twice as fast as say... one of those 8 meg buffer, 80 gig Western Digitals.

Correct me If i'm wrong!

[montesomma]

Actually right now i have 1x80GB WD,8 MB Buffer,and the motherboard has alreay a RAID controller(IWILL-XP333-R).
But before i spend another $130 for another WD,i want to be sure that at least, i will have a 20-30%inpruving in performance.

[Penguin4x4]

It wouldn't be twice as fast. It's like running a dual processor system. while one disk is reading information, another can write or read as well. It is faster than a single drive, because what you are doing is making two drives act as one, using twice the max. available bandwidth, as well as distribute the load amongst two drives.:)

[donny_paycheck]

In most cases you can get almost twice the throughput.

Seek times, on the other hand, don't improve. So it really helps with large I/O intensive tasks but not a lot for sporadic reading and writing. Your OS and games will load faster. You will be able to copy things faster. But things that randomly hit all over the disk rely on low seek times, which RAID 0 will not help. RAID 0 has even increased seek times in some cases, although by no more than .1 or .2ms - too little to offset the gains made in throughput. Since switching to ATA RAID I've noticed a huge performance increase. Everthing happens faster, because almost everything involves I/O perofrmance. I'm never going to run a single drive again.

WELCOME TO THE FORUMS!

edit- Check out this thread (http://forum.oc-forums.com/vb/showthread.php?s=&threadid=108647).

[montesomma]

Ok you i`ll go to by another HD tomorrow:) .
But i have one more question,do i have to buy the same identical HD for the optimal performance??

[Penguin4x4]

Yes. If you have a 60 gig and an 80 gig, it would only be 120GB instead of 160.

[donny_paycheck]

Originally posted by montesomma
But i have one more question,do i have to buy the same identical HD for the optimal performance??

For optimal performance, yes. You should have identical capacity drives. Capacity is the most important attribute to match. If you're using a RAID then I'll just assume you're using all 7200rpm disks. After capacity comes cache size, then other things that don't matter so much.

Size is the most important thing to match. Make sure your sizes are identical or as close as possible, for optimal performance.