Hd tach bench on raid0

snowdog

snowdog

snowdog

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Hello,
Im using 2 7200.10's 250 gig in raid 0 and woudnered how fast they are so i did hd tach, however i dont know if its good or bad as most of the hdd to compare with in the program seem old ( no 7200.10 to compare with), *** raptors result also is odd, sata should be way faster.

So are these results ok?


 
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For sustained read, you'll not beat that with anything but raptors. That is an excellent bench! What is the stripe size? If it is 64 or 32K, that is a very fast RAID0. The only time I came close to that sort of read was with a 16K stripe using 7200rpm drives (smaller stripes perform better in benches) which only hit 113Mb/s.

Obviously my raptor RAID0 hit 128Mb/s but these were raptors.
 
smids said:
For sustained read, you'll not beat that with anything but raptors. That is an excellent bench! What is the stripe size? If it is 64 or 32K, that is a very fast RAID0. The only time I came close to that sort of read was with a 16K stripe using 7200rpm drives (smaller stripes perform better in benches) which only hit 113Mb/s.

Obviously my raptor RAID0 hit 128Mb/s but these were raptors.
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I dont know tbh, i used standard raid 0 options in raid bios( using ich7r controller or 82801GR/GH sata raid controller on a asus p5ld2) , i just pressed enter on everything in raid bios and this is how it turned out. Is tehre any way to know how large the stripe is?

EDIT: cpu is a p4 630 @ 4.1 ghz if it matters, 1090 mhz (quadp.) fsb, perhaps higher fsb helps??
 
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124.9MB/s Average read for NON Raptors (7200rpm HDDs) is really very good indeed..to say the least.

I get just over 130MB/s Average read with my 2 x 74GB Raptors (8MB cache) in RAID0 (32KB stripe).

I used 2 x 200GB Seagate Barracudas 7200.7 in RAID0 for a time, and using a 32KB stripe (4KB cluster) size, the best Average read I ever got was 105MB/s.

Your 74GB (8MB cache?) Raptor Average read is also spot on.

So you're looking good there. ;)
 
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snowdog said:
I dont know tbh, i used standard raid 0 options in raid bios( using ich7r controller or 82801GR/GH sata raid controller on a asus p5ld2) , i just pressed enter on everything in raid bios and this is how it turned out. Is tehre any way to know how large the stripe is?
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There is, but I can't remember it at the second. Usually default stripe is 64K, and if so, that is one amazing score as running on what I feel is a much better 32K stripe (perfect for windows and games as it is a happy medium), then the read would be higher still.
 
hddzt8.jpg


Another 2x250Gb 7200.10s in RAID0 :)

Why is my burst so low :confused:
 
Odd there Dave - check using Device Manager - under the ATAPI Devices etc, Serial ATA Controller > Look under the tabs there - it should say SATA Generation 2-2.5 or similar.

Perhaps make sure you are using the latest nForce IDE SW drivers?
 
iam seeing same thing with scsi card on nforce 4 chipset limit seems to be
always under 180 weird i no

ill be setting scsi card on intel pw64 and will test wich is the intel chipset.
 
if anyone's interested, i have a 128kb stripe, just checked in raid bios, worth changing to 64 or 32 ?? Its not my windows drive but it is my pagefile hdd and i have most of my games installed there too.
 
snowdog said:
if anyone's interested, i have a 128kb stripe, just checked in raid bios, worth changing to 64 or 32 ?? Its not my windows drive but it is my pagefile hdd and i have most of my games installed there too.
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That was done with 128Kb stripe?!?!?!?!?!?! :eek:

Large stripes are good for larger files e.g games/photoshop/video editing but any file smaller than the stripe size is only placed on one disk, negating the RAID0 benefits. Most O/S files are much smaller i.e. 60KB etc, so 32KB stripe is a popular happy medium between the two. Windows runs very quickly on smaller stripes, whilst games are still fast all the same and considering windows is used more than a game, it makes sense to use smaller stripes. Your average read will shoot up with a stripe of 32KB - something like 135Mb/s I would think.
 
smids said:
That was done with 128Kb stripe?!?!?!?!?!?! :eek:

Large stripes are good for larger files e.g games/photoshop/video editing but any file smaller than the stripe size is only placed on one disk, negating the RAID0 benefits. Most O/S files are much smaller i.e. 60KB etc, so 32KB stripe is a popular happy medium between the two. Windows runs very quickly on smaller stripes, whilst games are still fast all the same and considering windows is used more than a game, it makes sense to use smaller stripes. Your average read will shoot up with a stripe of 32KB - something like 135Mb/s I would think.
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Renember tho, no windows on that drive, about all files are 200mb+ on that hdd, and pagefile is a 1.5 gig file, avarage file size is about 300 ish mb on my raid array i recon ( most modern games have data in them big .dat files of a few gigs )
Yet i have 3 spare 160 gig hdd's to backup my data from my raid array to delete the array and replace it by 32kb, would it be worth all the hassle?
 
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