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SATA II Raid 0 Help
- Thread starter Angellus
- Start date
bdt
Executive Member
"RAID" 0 is an effective way to get your PC to 'do stuff' faster, no doubt there. But first note that it's not "real RAID", there's nooooo backup of any kind so if either drive fails, there goes your install. RAID1, while on the subject, does give you backup but nothing like the speed advantage that RAID0 does.
But let's get to the fun part; while you're not going to see a data throughput increase in the way you're thinking here, you WILL get a speedup, but it'll be because of the data being shared between two(or more) drives and you guesstimate the speed increase from splitting the seek-time latency of the drives between them. At this stage I'll admit to have only ever taken RAID0 to two drives sharing the load, I can't comment on using 3 or more for this (or if/how it's even possible!) The perceived effect is of apps launching much faster (compared to a single drive), up to the limits imposed by the SATA bus/chipset/drives ..which is never as fast as the theoretical numbers they dazzle you with!
My case in point: a bud of mine has 2x Raptor 35gig drives in RAID0 on his ASUS A8N-32SLI board, and it seems that no matter how big the file is we look at, or how piggy the *cough*MS Office*cough* app he launches, it just 'pops' onto the screen ..it's really quite depressing
But look around for info on this topic, it's one that's been well and truly thrashed to death around the 'net.
-bdt
But let's get to the fun part; while you're not going to see a data throughput increase in the way you're thinking here, you WILL get a speedup, but it'll be because of the data being shared between two(or more) drives and you guesstimate the speed increase from splitting the seek-time latency of the drives between them. At this stage I'll admit to have only ever taken RAID0 to two drives sharing the load, I can't comment on using 3 or more for this (or if/how it's even possible!) The perceived effect is of apps launching much faster (compared to a single drive), up to the limits imposed by the SATA bus/chipset/drives ..which is never as fast as the theoretical numbers they dazzle you with!
My case in point: a bud of mine has 2x Raptor 35gig drives in RAID0 on his ASUS A8N-32SLI board, and it seems that no matter how big the file is we look at, or how piggy the *cough*MS Office*cough* app he launches, it just 'pops' onto the screen ..it's really quite depressing
But look around for info on this topic, it's one that's been well and truly thrashed to death around the 'net.-bdt
Angellus said:
Why ?
Angellus said:
That's theory. Common practice proves otherwise. Sure, RAID 0 with a proper RAID controller does perform faster. These things they provide on mainstream desktop motherboards are not proper RAID controllers. Hell, AFAIC, the ZCR cards don't qualify either.
WHY do you want to run a RAID 0 setup ?
Angellus said:
I think it depends on your IO pattern. "Proper" RAID controllers have great wodges of cache RAM on them that you can split for read/write according to your pattern. Does not help much if you are just doing loooong reads or writes like big file copies though.
masticore said:
LOL I like the one they draw for me