Vista - Low disk write performance on Promise EX8350/Raid0/Vista64 Busines

I have six hdd in raid0 on this controller. This config worked fine with
XP/XP64 bit but I'm getting write speeds TEN TIMES(!) lower with Vista
Business 64bit (around 20 MB/s). Read speeds are ok. Any suggestions?

Bufi,

Have you checked to make sure you're using the latest and proper Vista 64
bit drivers for that controller?
--
freddy


"Bufi" wrote:

> I have six hdd in raid0 on this controller. This config worked fine with
> XP/XP64 bit but I'm getting write speeds TEN TIMES(!) lower with Vista
> Business 64bit (around 20 MB/s). Read speeds are ok. Any suggestions?

Yes, I'm using the latest drivers and bios/FW from Promise website. They
worked fine under XP 64bit edition.

Just checked that array works as expected with two and three drives, maybe
it's a capacity issue (5 x Seagate 320GB NCQ HDD)? I'll check some other Raid
configurations and post info here.

"freddy" wrote:

> Bufi,
>
> Have you checked to make sure you're using the latest and proper Vista 64
> bit drivers for that controller?
> --
> freddy
>
>
> "Bufi" wrote:
>
> > I have six hdd in raid0 on this controller. This config worked fine with
> > XP/XP64 bit but I'm getting write speeds TEN TIMES(!) lower with Vista
> > Business 64bit (around 20 MB/s). Read speeds are ok. Any suggestions?

Were you using over a Terabyte configuration on XP also?
Do you have multiple partitions on the logical drive?

"Bufi" <Bufi@discussions.microsoft.com> wrote in message
news83DD29C-3650-4A04-8CF2-49E2CCE6E4F7@microsoft.com...
> Yes, I'm using the latest drivers and bios/FW from Promise website. They
> worked fine under XP 64bit edition.
>
> Just checked that array works as expected with two and three drives, maybe
> it's a capacity issue (5 x Seagate 320GB NCQ HDD)? I'll check some other
> Raid
> configurations and post info here.
>
> "freddy" wrote:
>
>> Bufi,
>>
>> Have you checked to make sure you're using the latest and proper Vista 64
>> bit drivers for that controller?
>> --
>> freddy
>>
>>
>> "Bufi" wrote:
>>
>> > I have six hdd in raid0 on this controller. This config worked fine
>> > with
>> > XP/XP64 bit but I'm getting write speeds TEN TIMES(!) lower with
>> > Vista
>> > Business 64bit (around 20 MB/s). Read speeds are ok. Any suggestions?

Yes, the config was the same. (one large 1,45 TB drive, one partition)

However, I fixed the problem. After installing WebPM (controller config
utility via web browser) I realized, that all disks have write cache
disabled. After enabling it I rebuilded the array and now it works like a
charm.

Still don't know how I managed to get it working under XP. I never needed to
use WebPM, always configured the array from bios.

Anyway, thanks for your help.

Bufi
"JW" wrote:

> Were you using over a Terabyte configuration on XP also?
> Do you have multiple partitions on the logical drive?
>
> "Bufi" <Bufi@discussions.microsoft.com> wrote in message
> news83DD29C-3650-4A04-8CF2-49E2CCE6E4F7@microsoft.com...
> > Yes, I'm using the latest drivers and bios/FW from Promise website. They
> > worked fine under XP 64bit edition.
> >
> > Just checked that array works as expected with two and three drives, maybe
> > it's a capacity issue (5 x Seagate 320GB NCQ HDD)? I'll check some other
> > Raid
> > configurations and post info here.
> >
> > "freddy" wrote:
> >
> >> Bufi,
> >>
> >> Have you checked to make sure you're using the latest and proper Vista 64
> >> bit drivers for that controller?
> >> --
> >> freddy
> >>
> >>
> >> "Bufi" wrote:
> >>
> >> > I have six hdd in raid0 on this controller. This config worked fine
> >> > with
> >> > XP/XP64 bit but I'm getting write speeds TEN TIMES(!) lower with
> >> > Vista
> >> > Business 64bit (around 20 MB/s). Read speeds are ok. Any suggestions?
>
>