Hi Christian,
On Tue, 30 May 2000, Christian [iso-8859-1] Müller wrote:
> Edward Schernau wrote:
> > What kinds of disks are you using? I'm seeing occasional
> > corruption on my Seagate 20MB ATA66 barracuda, and have
> > not ruled out the possibility of unstable ATA66 mode.
>
> I am using these U160-SCSI-disks together with an Adaptec
> 39160-controller - not IDE:
>
> BARRACUDA 18XL 18.2GB U160 - 3.5LP 5.9MS 2MB 7200RPM LVD 68PIN
Sounds like the same ones I'm using.
There isn't much choice of Ultra160 disks at the moment, is there?
> After switching from U160-mode to UW-mode (40 MB/s), errors seemed to
> decrease by half. I did not quite manage to switch to normal Fast-SCSI
> (10 MB/s) as the driver showed at least 40 MB/s during boot.
Are you using a proper Ultra160-Wide cable? It should definately have
cable-crossover pairs (as I believe all LVD cabling does), and it should
probably be labelled as being Ultra160 capable.
> Does anybody at all have an Adaptec 39160 successfully running?
Yes! It seems to work great for me. My setup is as follows:
Super Micro P6DGE mainboard, Dual PIII 700/100, 2048 MB PC100 ECC
Adaptec 39160 Ultra160-Wide SCSI
Adaptec Ultra160 Cabling to 5-bay SCA hot-swap module
4 x Seagate Barracuda 18XL, 18.4 GB, Ultra160-Wide SCSI, Model ST318436LCV
It works really well - RAID0 over all four drives (this was a test, not
production!) gave 95 MB/s read at 45% CPU, and 84 MB/s write at 82% CPU.
RAID5 over all four drives gives 77 MB/s read at 45% CPU, and 30 MB/s
write at 43% CPU.
Regards,
Corin
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