| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 1845.1 | lots can go wrong with SCSI | WRKSYS::HOUSE | Kenny House, Workstations Engineering | Fri Feb 07 1997 07:38 | 28 |
| What drives are in the BA364? They ARE supported, right?
A few thoughts about what could be going wrong.
If the total bus length is three meters or more, the SCSI bus has to be
slowed down by tweaking the Console PKA0_FAST variable (or whatever
it's called nowadays).
>>> set pka0_fast 0 (or maybe "off", whatever works)
Or use shorter cables.
If you have the older BC-style cables, replace them with an equivalent
BN cable.
If the two boxes are on the same power switch, the drives may not be
spinning up fast enough. Try turning on the drive box first, then
after the drives are spinning turn on the system box. There are some
fancy things drives do to decide when to spin up, so listen to yours
to determine when they're running.
The drives may be sensitive to SCSI bus resets, and may take more time
to recover than is allowed by the Console code. This is especially
likely if the drives haven't passed qualification on this platform.
And lots more. Let us know how it goes.
-- Kenny House
|
| 1845.2 | internal/external termination | STAR::jacobi.zko.dec.com::jacobi | Paul A. Jacobi - OpenVMS Systems Group | Fri Feb 07 1997 14:47 | 10 |
|
You might also try:
>>>set control_scsi_term external
I think the default is "internal"
-Paul
|
| 1845.3 | | TLE::REAGAN | All of this chaos makes perfect sense | Fri Feb 07 1997 15:59 | 4 |
| control_scsi_term is ignored on A255s (according to the 255 manual).
The hardware should figure it out on its own.
-John
|
| 1845.4 | Disks are Unsupported !!! | GIDDAY::BENBROOK | Brisbane ruLes | Thu Feb 20 1997 00:53 | 26 |
|
Congratulations .1 - you win - the drives in use were RZ28M-VW
which are unsupported. They appear to work, but all bets are off
whenthe load goes on.
BA364-AA is supported on AS255, but only in Narrow SCSI mode.
Apparently it cannot Have a Wide controller fitted.
A closer look (with cryptic DEC # decoder) at the current Systems
and Options Catalog spells it all out.
An interesting aside:-
One of the three systems does NOT hang - it is at an earlier
version of SRM console (V6.0-943). The other two that DO hang are
at Version V6.2-2
Note: this latter info is added for interest only - the
whole lot are Unsupported in their current configuration.
Until the configuration is Supported, there is no need to
check further, or to draw any other conclusions.
Thanks for the input from other Noters.
Les
|