I have experienced a similar case as yours. I have two 50GB Seagate hds in
my system controlled by AHA2940UW2. The solution was to use another Power
supply. My original Power supply is a Generic 450W. I did not know if my
case is applicable to yours. However, it is worthy of a try.
F. Hui

"Analabha Roy" <daneelNOSPAM@physics.utexas.edu> wrote in message
news:ddni89$f8h$1@geraldo.cc.utexas.edu...
> Hi,
>
>
>
> I have a Seagate ST336607LW SCSI hard drive where I've installed my Linux
> (FC3) & windoze root partitions. It is a 68 pin HD with no internal
> termination. My scsi controller is an SIIG AP-20 PCI adapter (50 pin with
> internal auto-termination). I connected my scsi card to my scsi hard drive
> as follows:
>
>
>
>
> 50 pin ribbon
> 50-pin card---------------->50-pin terminator-->50-68 pin adapter-->SCSI
> Drive
>
>
>
> The hdd is on a dedicated connection to the power supply (no other devices
> chained to it along that power cable).
>
>
>
> Occasionally , irrespective of whether I'm on windoze or linux, the hdd
> makes a sickening "click" sound, shuts down (I can hear it) and spins up
> again. My entire compu freezes & I have to hard-reset.
>
> I checked the cable connections & they seem pretty tight, so I'm rather
> confused as to what's up. Is the termination bad? IS the HD overheating
> (it's typically at around 50 deg celcuis, & the operating limit is 54 deg,
> I'm getting an extra case fan that should cool it down further)? Is there
> something wrong with the controller? Is the hard drive itself busted (no
> badblocks or anything like that, and I ran Seagate's diagnostics on the HD
> and there were no errors).
>
> Where should I start in trying to diagnose the problem? DO I require
> special hardware?
>
> Bear in mind that there are no syslog error messages in linux as syslog
> can't write to the HD when it shuts down, so...
>
>
> I would appreciate ANY advice offered on this matter.
>
> Regards,
> AR
>
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