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4x raptor raid0

Last response: in Storage
October 25, 2005 5:18:34 AM

Just for the heck of it I decided to make a 4 disk raid0 with 4 36.7gb raptors I had layin around. I tested 2 2 disk raid0s first just to make sure the drives were good and to compare it to the 4 disk. On the nvraid controller HD Tach gave me about 180mb/s burst and about 70mb/s average read speed on both of them, that seemed ok (maybe a little low for raptors) for a 2 disk array. On the sil3114 controller I got about 118mb/s burst and 68mb/s average read speed. Naturally I went w/ the nvraid. What confuses me is that now on my 4 disk raid0 HDTach still only gives me 183mb/s burst and 72mb/s average read speed. I'd think a 4 disk array of raptors would be faster than that. I've seen benchmarks on the nvraid controller that go over 200mb/s so I dont think I've capped its bandwidth. SiSoft Sandra gives me about the same results as hdtach.
System specs:
athlon64 3500+
A8n-sli deluxe
2gb mushkin 3200
ati radeon x800xl
4x 36.7gb raptors raid0 (on nvraid)
250gb IDE seagate (94mb/s burst, 58mb/s ave read)
latest drivers on everything, just rebuilt comp 2 days ago.

Am I expecting to much out of my lowly 36.7gb raptors? ;) 

<A HREF="" target="_new">My precious...</A>

More about : raptor raid0

October 26, 2005 3:04:57 AM

I was reading some bad things about the newest 6.66 drivers so I went back to the 6.65 drivers but there is no change.
I can't find anything saying that the SIL3114 is on pcie. I thought only the newer SIL3132 and 3134 chips supported pcie. I also ran SiSoft Sandra's pci info thing and it shows the sil3114 as being on pci bus 5. Strange thing is that it also shows the nvraid as being on pci bus 0 yet it is advertised as having 3gb/s bandwidth. Hm...
It looks like they are up to v1014 of my bios while I only have v1008, I think I'll give that a shot.

<A HREF="" target="_new">My precious...</A>
October 26, 2005 4:14:17 AM

WinXP pro at the moment.

Oh and I forgot to mention the stripe is 64k. Just incase that effects it drastically.

<A HREF="" target="_new">My precious...</A>
Related resources
October 26, 2005 4:37:12 AM

I've got a spare 3ware 8006-2LP. Is that uber enough? :) 
Only a 2 porter though :(  I'll dig around to see if there is another 4 porter I can mess with.

<A HREF="" target="_new">My precious...</A>
October 27, 2005 3:27:22 AM

More than likely the benchmark you saw that was 200+ was done with windows tweaked down to below 80MB of page file use after a fresh boot. When I run HD test on my tweaked OS it always comes out higher. I dont know enough about HDs to say if this is it or not. If you would like to tweak the os I can send you the list of things to do.

ASUS P5WD2 Premium
Intel 3.73 EE @ 5.6Ghz
XMS2 DDR2 @ 1180Mhz

<A HREF="" target="_new">#2 CPUZ</A>
SuperPI 25secs
October 27, 2005 5:35:40 PM

That's because you have the intelligence of an eggy fart.
October 30, 2005 3:24:57 AM

Well, in trying other things I seem to have discovered what is probably the reason for my slowness. One of the raptors if failing. It just all of a sudden started making this freakish sound (like spraying a fan with an air compressor) and the comp locked up. I shut everything off, and for the heck of it turned everything back on. The drive made that sound for about 2 seconds, spun up, and amazingly booted the os again. After that I dont think I'll trust it, off to RMA land it goes :) 

<A HREF="" target="_new">My precious...</A>