Thank you to those that responded.
Question 1:
> I have 7 x 36GB HDDs in my DS20 and the CD-ROM takes the 5th SCSI
> address from the SCSI bus. Is there a quick fix? This controller can
> handle 15 devices. I don't really want to down the system and make a
> hardware change like jumpers on the back of the CD if possible (I fear
this
> is the solution).
Answer 1. V4.0F can only support up to 7 devices, even on a wide SCSI bus.
Once you get to V5.0 and later, you should be able to run more devices with
your existing wide controller, but you'd need to have a storage shelf and
wide
cables and so forth that all work together.
Question 2:
> I would really like to see some good examples of other DU systems
> sysconfigtab; fstab; and swapspace settings. We easily use between 4 and
8
> GB of swap during each days compiles while both processors are running.
> Seems as if about 12GB is good for safety on our systems but what is the
> correct way to set proc: per-proc-stack-size; per-proc-address-space;
> max-per-proc-address-space; with regard to vm: vm-maxvas? These are the
settings
> I am using:
> Swap space - 12GB on a DS20 with 4GB of RAM. These are
> the additions I have used in the sysconfigtab. It works well.
>
> vm:
> vm-maxvas=12689279549
>
> proc:
> max-per-proc-data-size=12689279549
> max-per-proc-address-space=12689279549
> per-proc-address-space=12689279549
>
> max-per-proc-stack-size=134217728
Answer 2. I really can't comment on the tuning parameters; they look like
they'd be
OK for your system, but a lot of this does involve experimentation to get
a good fit to the workload.
We have disconnected the SCSI CD-ROM that is built in to the DS20 and this
enabled
us to use the 5th SCSI HDD. If we have to reload the system or do an
upgrade that
requires the CD-ROM we will hook it back up. Eventually we will upgrade to
Tru64 5.0
and resolve the issue all together as Dr. Blinn suggested.
Received on Mon Mar 20 2000 - 19:11:23 NZST