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Conference wrksys::dec3000

Title:DEC3000
Moderator:WRKSYS::BCLARK
Created:Wed Jan 04 1995
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:266
Total number of notes:763

257.0. "pmazc-aa config error" by NETRIX::"[email protected]" (Jan Thomsen) Wed Mar 19 1997 03:25

Hi!
Had a problem with the scsi-busses on the turbo-channel in a AXP3000-600
running
VMS so I tried to put in a new PMAZC-AA v2.2 and run the following console
test
>>>t tc0 conf
   DEC PMAZC-AA v2.2 Port A slow Port B slow (Dual SCSI....)
>>> set tc0 setid f f (change Port A+B to fast)
then I switched the system off and connected 2 pizza-boxes with total off 6
disks - so 3 disks on each turbo-channel scsi-bus and run the console test
again

>>> t tc0 cnfg
Arbitration not WON... Reset the bus 
(one line for each scsi ID)
.
.
Arbitration not WON... Reset the bus
..HostID ..   A/7   INITR

	and the same with the B-channel
then I did the above again and this time I could see 3 disks on each channel
now I rebooted the system but the disks on the turbo-channel scsi-busses did
not come up.

Is there any explanation to this? Have I forgotten some thing???

Regard Jan Thomsen
[Posted by WWW Notes gateway]
T.RTitleUserPersonal
Name		DateLines
257.1need some more informationLEDDEV::DHATIThu Mar 20 1997 16:569
	The command to change the settings is 

	>>> t tc0 setid f f

	What OS are you booting up to? VMS will see all
	the disks automatically but in unix you need to add
	them

- sridhar.
257.2NABETH::alanDr. File System's Home for Wayward Inodes.Thu Mar 20 1997 20:3614
	The need to update the configuration file on Digital UNIX
	to include new disks depends on the version and what features
	you expect the operating system to offer.  If the CAM driver
	has a clue that the controller exists, it will find all the
	disks and has for years.  On some versions, I've noticed that
	the system disk is special and needs a clue from the configuration
	file, but I think this was changed around V3.2.  The ability
	of iostat to get performance statistics for disks depended
	on entries in the configuration file on some versions, but
	in V4.0 you don't need to offer it a clue with non-zero LUNs
	of an HSZ.

	For modern versions all you need are entries for the controllers;
	the devices will take care of themselves.
257.3it's VMSNETRIX::"[email protected]"jan ThomsenFri Mar 21 1997 02:4615
Hello!
As I wrote in my opening topic, this system is running VMS and to my
experience
VMS can not see any disks on the PMACZ-AA if one can not see the disks from
the
console command ">>> t tc0 cnfg". On the system where I had a problem VMS was
stuck in mounting disks sitting on the turbo-channel scsi's.
And then if the hardware cannot see any devices how is the OS able to see
it???

But thanks for the replies so forth.

Regards
Jan Thomsen
[Posted by WWW Notes gateway]
257.4without disks?CERN::HOBBSCongrats to the Ignoble Peace Prize winner! (http://www.eecs.harvard.edu/ig_nobel)Fri Mar 28 1997 04:449
I've used pizza boxes with PMAZC...

What happens without disks in the box?  1 disk, 2 disks, 3 disks?

Any chance the DIP switches are upside down (you think you have SCSI ID
0,1,2 but it's really 7,6,5)?  Setting a disk to the host ID would cause
strange happenings.

-cw