Re: slow disk response

hi Andy,

Sorry for late reply, I had PC issue when doing my original reply.

It looks like you're are using a PC mobo for SBS. RAM and CPU are
sufficient for SBS2k unless you're running some heavy apps.
Your HDs shd be ok, but note that PATA hard drives run slower
relative to SATA or a RAID.

I don't think it's a SP issue or disk.sys. You typically shd have DMA
enabled (but this really depends on the mobo) and write cached enabled,
otherwise things will be slow. You should typically apply the latest
mobo drivers but not blindly - with SP4, that may have the latest h/w
driver for standard hardware. Is there a way to uninstall the mobo
driver that you applied?

My experience with a PC box, running SBS2000sp4 on a normal PATA
controller is that the box will be very slow. Lots of ram will reduce file
swap IO a bit, but as a server there will be lots of I/O writing to Exchange
and just being a file server. Even when using a 'RAID' controller on a
PC mobo, which tend to be s/w RAID, performance is slow or sometimes
crashes. I'd suggest a true hardware RAID from Adaptec or 3ware if
you're concerned about slow IO on a server, and you should be.

Is this a new SBS install? If so, reinstalling may be better if you can't
uninstall the mobo driver (if this is older).

Regarding performance, was there something that changed that resulted
in performance becoing slow or is this a new install? It is not appropriate
to compare benchmarks on PC with a server, esp. if you install SBS
as there're many more processes running on SBS - it is tuned to provide
server services rather than app performance.

Eugene Tan
SBS MVP









"Andyve" <Andyve@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:A6141A5E-DE85-4BB9-B618-F23A324C3CD6@xxxxxxxxxxxxxxxx
sorry Eugene, the box is a 2.8GHz and has 2Gb RAM.

"Eugene Tan" wrote:

hi Andy,

Pls tell me more about your SBS box. What type of hard drives and how
configured? Using any RAID or just the IDE on the mainboard? Are the
HD partitioned? How old are the HD?

I wouldn't advise replacing drivers .sys using command line, and chances
are it will not work/be alowed. You shd use the driver for Win2000 to
update the hardware, depends on what you're using for the HD adaptor.

When you mention slow, pls tell me more - is the drive timing out?
Are you comparing to previous performance or to a PC?

Eugene Tan
SBS MVP

=============================
"Andyve" <Andyve@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:CDF915DE-EFB6-4467-917E-285A7F79A5DA@xxxxxxxxxxxxxxxx
i have sbs 2000 installed with sp4 and am having an issue with slow disk
response. the kb's say to ensure the drive is on a seperate ultra ata
ribbon
cable (done that) and to check bios (done that) check advanced
properties
for
dma enabled (done that) and it is still the same. i found some info on
disk.sys causing the hdd to slow donw with wrtie cache enabled. i have
removed that (i have a ups on the server to ensure the data is not
corrupted
with a crash / loss of power) still the same. however i have checked
the
date
and tried to update the hdd driver (disk.sys) and the date is 1999 and
the
update says it finds a newer driver and installs but the date is the
same.
i
have seen disk.sys files shown in various kb's with dates as new as
2005,
even the i386 original disks show 2001.
QUESTION: can i just copy the newer disk.sys to the
wnnt\system32\drivers
directory without the chance of the data being corrupted?
QUESTION: sp4 will not re-apply, it says sp already applied. how can i
re-apply sp4 without removing it first and then running the risk of
other
newer programs installed not working properly?

i hope some guru out there can help, especially since sbs 2000 is not
supported anymore!!





.

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