Frustrating SCSI speeds???
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Hi all, I am really frustrated with the SCSI drive r/w speeds on our systems. One system is having Adaptec on-board controller with a Fujitsu 15k drive connected to it and the other one is having LSI logic on-board controller with a Seagate 15k drive connected to it. They both are giving me r/w speeds of 14MBps to 17MBps which is not acceptable with a SCSI drive. I have tried a Maxtor drive in place of Seagate and that too is having the same speeds. But strangely the Fujitsu connected to adaptec controller is acting differently, I have downlaoded a scsi diagnostic utility from Fujitsu website and whenever I run this utility, the r/w performance boosts to 70MBps. But this utility can not be used on other drives (only on fujitsu drives). You can download the speed utility program that I use to check the drive performance from here HARDDISK.exe Can someone help me out with whats going wrong over here?? I even updated my aspi drivers to the latest version (V4.71). What speeds are you getting on you SCSI drives in non=raid option?? thanks, -Pavan.
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Hi all, I am really frustrated with the SCSI drive r/w speeds on our systems. One system is having Adaptec on-board controller with a Fujitsu 15k drive connected to it and the other one is having LSI logic on-board controller with a Seagate 15k drive connected to it. They both are giving me r/w speeds of 14MBps to 17MBps which is not acceptable with a SCSI drive. I have tried a Maxtor drive in place of Seagate and that too is having the same speeds. But strangely the Fujitsu connected to adaptec controller is acting differently, I have downlaoded a scsi diagnostic utility from Fujitsu website and whenever I run this utility, the r/w performance boosts to 70MBps. But this utility can not be used on other drives (only on fujitsu drives). You can download the speed utility program that I use to check the drive performance from here HARDDISK.exe Can someone help me out with whats going wrong over here?? I even updated my aspi drivers to the latest version (V4.71). What speeds are you getting on you SCSI drives in non=raid option?? thanks, -Pavan.
All of my servers are in the the range > 14MBps to 34MBps (more or less with your software.), All of them are either LSI or Adaptec SCSI. But all are Maxtor Drives. (I never had any good luck with Seagate.) I don't know where your getting the 70MBps, but I didn't. Sorry, Not much help.. Progload
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All of my servers are in the the range > 14MBps to 34MBps (more or less with your software.), All of them are either LSI or Adaptec SCSI. But all are Maxtor Drives. (I never had any good luck with Seagate.) I don't know where your getting the 70MBps, but I didn't. Sorry, Not much help.. Progload
I'm getting 70MBps using a Fujitsu drive and only after I run the SCSI diagnostic tool provided by Fujitsu. But it works only with Fujitsu drives though... at present it is on-board adaptec controller, I haven't tested it on other cohntrollers. -Pavan.
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I'm getting 70MBps using a Fujitsu drive and only after I run the SCSI diagnostic tool provided by Fujitsu. But it works only with Fujitsu drives though... at present it is on-board adaptec controller, I haven't tested it on other cohntrollers. -Pavan.
Could be the Fujitsu software tools "communicate" right to the drive controller on the drive and do somthing, and not to the SCSI controller.. humm.. don't know.. but it's interesting. I did notice your software produces a different speed average each time it runs but it was mostly in the ranges I gave you. Wish I had a Fujitsu drive and time to dink around with it.. Don't think i'll be much help, Sorry. Curiosity.. where did you get the diag tool? Progload
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Could be the Fujitsu software tools "communicate" right to the drive controller on the drive and do somthing, and not to the SCSI controller.. humm.. don't know.. but it's interesting. I did notice your software produces a different speed average each time it runs but it was mostly in the ranges I gave you. Wish I had a Fujitsu drive and time to dink around with it.. Don't think i'll be much help, Sorry. Curiosity.. where did you get the diag tool? Progload
I got it off Fujitsu Europe website at that time... here it is http://www.fujitsu.com/us/services/computing/storage/hdd/support/utilities.html the SCSI utility - now its available on US website too.. I think SATA is far better than SCSI in my case. I built a new system with SATA drives in RAID0 and I am getting around 121MBps (using WD Raptor 10K SATA drives). -Pavan.
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I got it off Fujitsu Europe website at that time... here it is http://www.fujitsu.com/us/services/computing/storage/hdd/support/utilities.html the SCSI utility - now its available on US website too.. I think SATA is far better than SCSI in my case. I built a new system with SATA drives in RAID0 and I am getting around 121MBps (using WD Raptor 10K SATA drives). -Pavan.
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Yes, SATA as in most cases would be a better option I think. I only do Scsi, if I really need or want it "Bullet-Proof-No-Fail" Sorry I was asking about the Spectrum Speed tool..you had a link too.. I couldn't find it on google.. Progload.
That tool is specially created by the Spectrum GmBH corp (strategic-test) to test their systems while testing their high speed PCI and PCI-X Signal acquisition and AWG cards. So, its not a commercially available tool.:) -Pavan.
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That tool is specially created by the Spectrum GmBH corp (strategic-test) to test their systems while testing their high speed PCI and PCI-X Signal acquisition and AWG cards. So, its not a commercially available tool.:) -Pavan.