Re: Why is my SCSI hard drive still running at 40 MB/sec?


"Michael Baeuerle" <michael.baeuerle@xxxxxxxx> wrote in message
news:oomle5-004.ln1@xxxxxxxxxxxxxxxxxxxxxx
Folkert Rienstra wrote:
Michael Baeuerle wrote in news:le2je5-d81.ln1@xxxxxxxxxxxxxxxxxxx
Ar Q wrote:

All the SCSI hard drives I have are OK, not faulty in any way. How
do I
know? When I got a new SCSI hard drive, I connect it to the internal
connector. They all run at 160MB/s. But when all drives are put in
the
external enclouse, the speed drops to 40MB/s. That is I try to
figure it
out.

Therefore the disks are OK and the upper byte of your SCSI bus must be
defective somewhere on your external equipment.

Not necessarily. The problem can be at both ends of the external cable.

A certain problem at the enclosure end that doesn't also affect the
SCSI controller wouldn't affect it either if it existed in the
controller itself.

Ack. "Upper byte broken somewhere on the way from the chip of the HA to
the external disk" should be more accurate.


Micha

I have duplicates for each part in the chain except the the SCSI control
card (Adaptec 29160). It is just the card performing perfectly except it
drops external segment to 40MB/sec. It is difficult for me to believe there
is a fault on the card itself. But it could happen.


.

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