Compaq VAX 7000 Przewodnik Instalacji Pobierz pdf (Strona 49)

14.3.14 Vital information in Laser Errorlogs

There is a process whereby Operating System errorlog information can be placed in the

EEPROMs of Laser CPUs. These logs (called rather confusingly SDD) are a great help to

the repair centres. This process was not supported by VMS before version 6.0 and OSF/1

version ???. So the message is: include a hardcopy of the errorlog with any CPU module

you return (always a good idea anyway).

14.3.15 LFU Version 5.2 revision reporting

The SHOW command under version 5.2 of the LFU will sometimes incorrectly display the

CPU hardware revision. Ignore this ﬁgure, get revision from CPU module. Later versions

of LFU get it right.

14.3.16 Async 05 Machine Checks on Multiple CPU VAX7000/10000s

DSM and other applications may experience Async 05 Machine Checks running in an SMP

environment. Stack frame shows failing opcode of 5D, an INSQTI instruction. Fixed by

V2.6 of VAX7000/10000 console.

14.3.17 MS7AA-FA SIMM isolation on DEC 76/7700 from OpenVMS AXP errorlog

When a memory CRD error is logged for the 2GB array, the error formatter may not give the

information required to identify which SIMM is at fault. A manual procedure for decoding

the errorlog entry and locating the SIMM is described in the MS7AA-FA Memory Module

Service Manual.

14.3.18 VAX 7000 upgrade gotcha

When the VAX 7000 was ﬁrst announced, the maximum supported number of CPUs was 4

(IE: a 7640). Now 6 CPUs are supported (IE: a 7660). Unfortunately this required a change

to the CPU module, making it a -AB variant. This means upgrading a 7640 to a 7650 or

7660 may mean replacing all the CPUs as only E2045-ABs will work. (E2045-AAs are ﬁne

for 7610s thru 7640s).

14.3.19 DEC OSF/1 AXP PRESTOSERVE memory option MS7BB

This is a 16 MB battery backed up memory which sits in the LSB backplane. It’s onboard

battery will "keep" data for up to 48 hours of power outage. It is used with OSF/1 as a cache

for disk I/O (now you know why it’s got BBU!) and, as this speeds things up a bit, it is also

known as PRESTOSERVE.

Installing and servicing this option is a bit more exciting than ordinary memories, so make

sure you read The DEC OSF/1 guide to PRESTOSERVE (AA-PQT0A-TE), and the MS7BB

section of DEC 7000/10000 AXP Technical Bulletin No2, before you try it.

The DEC7000/10000 implementation consists of an option: DJ-70APS-AA. This includes

the MS7BB-AA, a PAK for the PRESTOSERVE license and installation documentation.

DJ-70APS-AA requires a minimum revision matrix of console, OSF, and CPU module for

system compliance. (To work they mean!) Systems below revision must be upgraded before

the option is installed.

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Compaq VAX 7000 Przewodnik Instalacji Strona 49