Joe CAMPBELL <[log in to unmask]> wrote:
 
>This weekend I attempted to redirect the default Memory Dump device (DDUMP)
>from our DAT drive (ldev 9) to our 7980XC drive (ldev 7).  I assumed this
>would be a simple matter of moving the DDUMP device class name from ldev 9
>over to ldev 7 in SYSGEN.  However, after attempting to do this and
>performing a test memory dump, the change never took effect?  A call to the
>HP RCS revealed that as of MPE/iX the DDUMP class is no longer used
>(A3729873).   I was a bit surprised to learn this since MPE/iX has been
>around for quite a while.  What purpose does this DDUMP device serve then
>and why does HP keep it around?
 
We don't/haven't. The device class DDUMP has never had any validity
on MPE/iX.
 
<<snip>>
 
>It seems to me my problems would all go away if HP simply implemented
>the DUMP command to write to the configured DDUMP device as it did in
>in the good old classic days?  If anyone has any information on this
>issue, I'd love to hear it.
 
Unfortunately, the system was not designed to work this way. To
eliminate the necessity to open system files the decision was made to
use the setting already available at the hardware level (stored in
NVRAM).
 
One option you may want to consider is purchasing (a nasty word) the
AUTORESTART product and perform your dumps to disc instead of tape.
You would only go to tape if the disc files were already in use
holding valid dumps that were being investigated.
 
>
>Joe Campbell
>Donnelly Corporation
>
 
 
--
                            --Pete Crosby
 
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