I have triple checked the drives are in RAID 0, and yes the BIOS does say SATA configured as RAID.
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Slow RAID 0 performance on Intel ICH5R controller
I've got 2 WD 36gb WD Raptor drives in RAID 0. However they don't seem to be producing the speed they should be. For instance I've seen quite a few others with IDE RAID on 7200 rpm drives getting around 100mb/s average read on HDTach. However with my Raptors in RAID I only get around 50 mb/s average read. Some single IDE drives get close to what I'm getting with 2 drives in RAID. Other benchmarking programs show the same results such as Sisoftware Sandra
I'm using a Asus P4P800 Deluxe with a P4 2.6C with latest BIOS
1 gb of PC4000
430 watt Enermax power supply
ATI Radeon X800 Pro
2 36GB Raptors in RAID 0
WIndows XP Pro with all updates
It seems everybody is getting higher speeds than I am. Anybody know why?
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Answers
"...However with my Raptors in RAID I only get around 50 mb/s average read..." ?!
I thought you were after RAID 0.
Also, download latest Intel Application Accelerator RAID Edition Driver, install then reboot. If your speed readings are off, it may be the software that is incorrectly measuring transfer speeds
Does it FEEL any faster?
As for closing the question, if the author has not posted after so long and DOES NOT POST AFTER THIS LATEST POST, then he/she must have solved the problem on his/her own, therefore you may close and refund
...However with my Raptors in RAID I only get around 50 mb/s average read..." ?!
Sorry it should read "However with my Raptors in RAID, I only get..." Slight typo there that may cause some confusion. I've also tried the Intel Application Accellerator. And no, it doesn't feel any faster when using that. I've used 3 different software programs and compared them to others who have very similar configurations in terms of using two raptors in RAID 0. And those comparisons are using 3 different software benchmarks as well. Which atleast shows double the speed I get with my setup.
Does it feel faster than a single ide drive?
If all else fails, as a FINAL resort, that requires reinstallation of Windows
1. Backup all your data, on a different physical hard drive from the RAID array Raptors
2. Download the latest Intel IAA, should be IAAR_enu45
3. Use WinRAR to extract all the files from the above downloaded .exe file
4. Browse to the folder files\driver in the folder where you extracted the above.
5. Copy the following files to a floppy
iastor.cat
iaStor.inf
iaStor.sys
TXTSETUP.OEM
This floppy will be used for reinstalling Windows.
6. Get the floppy version of the Western Digital DataLifeGuard tools to allow you to boot of the floppy and low level format the raptors
7. Go into the BIOS and change your system to non-RAID. You will lose all data that is not backed up
8. Boot from your DataLife Guard floppy and write zeros to both WD-Raptor drives (low level format)
9. Reboot, go into BIOS and enable RAID AND Intel BIOS ROM
10. Reboot, go into Intel ROM and build a RAID 0 array, stripe size 128KB using your two freshly low level formatted WD Raptors
11. Use a bootable Windows XP CD to reintall WIndows, and when prompted to do so, press F6 to load the RAID drivers from the floppy you created in step 5. N.B. Pay attention, the F6 message appears briefly, also, after pressing f6, nothing will happen at first, Windows setup will look as if continuing to load despite F6, THEN it will come up with a message allowing you to specify those drivers from the floppy.
12. After Windows is installed, run Setup for IAAR_enu45 and install it.
13. Reboot and setup your machine as you like it.
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by: yolunga2000Posted on 2004-07-17 at 15:18:32ID: 11576063
Are you sure the drives are in RAID 0? Check in the Intel RAID BIOS (can be entered at POST) to make sure that the drives are in RAID0 as opposed to RAID1.
Also, make sure bios setting under ide controller which says "SATA configured as" (or something to that effect) is set to RAID and NOT ide.
If all the above does not help you, just give us a shout.