SCSI speed problem in Win XP

Archived from groups: microsoft.public.windowsxp.hardware (More info?)

Hello,

I have been searching and searching the internet for an answer to this
little 'challenge' of mine and I was wondering if anyone would be able to
help me. Several years ago I invested quite a lot of money in SCSI HD's and
an Adaptec SCSI 39160 Ultra 160 SCSI card. It worked wonderfully with
Windows ME and was the fastest system I had ever seen. In the last couple of
months, however, I upgraded to Windows XP and found that all of my SCSI drive
speeds had significantly dropped. I ran a check of the transfer rates of my
U160 HD's and they were transfering about 20MB/sec, while my IDE drives are
transferring about 33-40MB/sec. When the computer boots up, it shows that my
SCSI HD's are sync'ed at 160MB/sec and they are on a 16 BIt bus. Is there
something wrong with my system? I have checked everywhere I know to check.
Adaptec has no answers for me and I am about ready to throw my computer out
the window! Here are my system specs:

OS: Windows XP PRO
CPU: Athlon XP 2600+ (Thoroughbread chip)
RAM: Corsair PC3200 Dual Channel 4ooMHZ (1GB)
Video card: ATI Radeon 9700 PRO
HD: Quantum Atlas III U160 10,000 RM 18.4 GB x2 (1 is set as my system/boot
drive, the other is used for storage)
HD2: Maxtor 80 GB 7,200 RPM 8 MB cache ATA 133 (Used as swap
file/storage/program install
Soundcard: Soundblaster Audigy Platinum Ex
SCSI card: Adaptec 39160 (Downloaded latest drivers that Adaptec had on
their website. I believe they are from Nov. 2002)

If someone could help me it would be greatly appreciated. I have checked
with everyone I know to check with to no avail. HELP!

Sincerely,
David Wester
1 answer Last reply
More about scsi speed problem
  1. Archived from groups: microsoft.public.windowsxp.hardware (More info?)

    "David Webster" <DavidWebster@discussions.microsoft.com> wrote in message
    news:141FB7B9-C237-4471-BF2C-312DA36D9B78@microsoft.com...
    > Hello,
    >
    > I have been searching and searching the internet for an answer to this
    > little 'challenge' of mine and I was wondering if anyone would be able to
    > help me. Several years ago I invested quite a lot of money in SCSI HD's
    and
    > an Adaptec SCSI 39160 Ultra 160 SCSI card.

    Big mistake as SCSI HDs offer little performance wise over ATA HDs on single
    user workstations.

    > It worked wonderfully with
    > Windows ME and was the fastest system I had ever seen. In the last couple
    of
    > months, however, I upgraded to Windows XP and found that all of my SCSI
    drive > speeds had significantly dropped. I ran a check of the transfer
    rates of my
    > U160 HD's and they were transfering about 20MB/sec, while my IDE drives
    are
    > transferring about 33-40MB/sec.

    Measured how exactly?

    > When the computer boots up, it shows that my
    > SCSI HD's are sync'ed at 160MB/sec and they are on a 16 BIt bus. Is there
    > something wrong with my system? I have checked everywhere I know to
    check.
    > Adaptec has no answers for me and I am about ready to throw my computer
    out
    > the window! Here are my system specs:
    >
    > OS: Windows XP PRO
    > CPU: Athlon XP 2600+ (Thoroughbread chip)
    > RAM: Corsair PC3200 Dual Channel 4ooMHZ (1GB)
    > Video card: ATI Radeon 9700 PRO
    > HD: Quantum Atlas III U160 10,000 RM 18.4 GB x2 (1 is set as my
    system/boot

    It's capable of about 53MB/sec. at the beginning.

    > drive, the other is used for storage)
    > HD2: Maxtor 80 GB 7,200 RPM 8 MB cache ATA 133 (Used as swap
    > file/storage/program install
    > Soundcard: Soundblaster Audigy Platinum Ex
    > SCSI card: Adaptec 39160 (Downloaded latest drivers that Adaptec had on
    > their website. I believe they are from Nov. 2002)
    >
    > If someone could help me it would be greatly appreciated. I have checked
    > with everyone I know to check with to no avail. HELP!
    >
    > Sincerely,
    > David Wester
    >
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