How to install and configure differential scsi on AlphaServer DS40

[SlopeZ]

Hi all,

i must to install a differential scsi card on an AlphaServer DS40, TRU64 5.1

The card already has been installed; but when i boot the console show me some CAM_ERROR errors.. that i think there is wrong in my procedure.

Can anyone explain me how to procedure correctly?

i suppose that i'll need to recompile kernel or anything like that..

Thanks in advance.

Regards!

[Hein van den Heuvel]

Well, it is always nice to boot -fi genvmunix, doconfig ... reboot.

Be sure to read up on the scsi cabling and termination. It really is critical. Here are a few rules.
The whole bus must be terminated on both sided.
- Those terminators must be fwd terminator... just because they fit does not mean they are right.
- The bus length may be quite long (20m? verify!), but shorter is better.
- The adapter may or might not be at the physical end.
- If the adapter is at the end, you can use the internal resistor packs (5) as the terminator for that end... but then you must not use the Y cable / Trilink + terminator any more on that end.

Please research requirements, possibly in this forum or the storage branch. If you still can not get it to work, then report back with specific on terminator names/numbers, cables used, Y or Trilinks use and maybe a crude picture in an attachment.

Good luck!

Hein.

[SlopeZ]

Hi again,

the physical installation was do it by HP provider, i think that it's ok installed.
Thanks for your note about it.

But i think that the error is about the system configuration.

Can you explain me the first comment that you posted? (about boot -fi genvmunix, etc...)

Thanks a lot!

Saints.

[Michael Schulte zur Sur · Accepted solution]

Hi,

you use
boot -fi genvmunix
when on console prompt meaning the machine is down and you boot the generic kernel. This kernel is built to detect new hardware.
Then you create a new kernel with doconfig.
The new kernel will be in
/sys/"HOSTNAME"/
Make a copy of the old kernel and copy the new one over the old.
reboot

greetings,

Michael

[SlopeZ]

Thanks to Michael,

now the scsi adapter its configured ok.

Thanks to all again.

Saints.