ADSM-L

Re: ADSM and Bad Disk Drives - your thoughts

2015-10-04 18:08:07
Subject: Re: ADSM and Bad Disk Drives - your thoughts
From: INTERNET.OWNERAD at SNADGATE
To: Jerry Lawson at ASUPO
Date: 5/15/97 8:18AM
I have been following the thread on this, but since I don't do Unix, I have
been at a disadvantage.  I am concerned about the other side of this problem
what happens (under your suggestion) if I do delete a file system - How do
you propose ADSM to tell this real condition from the error condition you
describe?

I am surprised by your explaination of how it works today - as I understand
it, if ADSM comes on a locked file system, it tries to delete the backups for
the files that it formerly knew about?  Am I correct?  Because if it does,
this would be counter to the precedent that was established in several other
places - for example, if I back up a file, then the next time I try to back
it up, someone has exclusive use of the file and I get an access denied
message, the previous backup is not deleted.  Backing up a node with a new
hard drive does not delete the backup of the old drive.

Have you tried to raise this as a bug to IBM Support?  I would agree that it
is not ADSM's job to warn you about errors - that's what you have a
monitoring package for.  But I do not think the situation as I understand it
is acceptable either - and we shouldn't have to wait for a redesign to
correct it.

BTW - I agree about -todate, -fromdate, but that is a different topic and a
different can of worms....

Jerry Lawson
jlawson AT thehartford DOT com



______________________________ Forward Header __________________________________
Subject: Re: ADSM and Bad Disk Drives - your thoughts
Author:  INTERNET.OWNERAD at SNADGATE
Date:    5/15/97 8:18 AM


Sherry,

You are right in that ADSM a lot of functionality etc.
That is why all forum members use it and
share their time in discussions about.

While Mark was really asking after notification,
his (and mine) real concern is simply
ability to restore exactly what was backuped yesterday.
And here has ADSM.s incremental backup
under circumstances a leak.

A wort about comparision with another backup products:
While another backup products do not have the functionality
you asked rhetorical questions about,
they also will not automatically erase indexes of older tapes
just after they have found an inaccessible file system.

Juraj Salak
sal AT keba.co DOT at


 >     I understand the problem with loosing a disk drive and I also
>     understand the need to know when a disk is unaccessible and I
>     understand ADSM's processing when files are deleted.
>
>     Do other backup products offer the functionality of notifiying someone
>     that files that were there yesterday are no longer there?  As this is
>     what is really being looked for.
>
>     I think the functionality to notify someone that a drive is bad should
>     come from a monitoring package and not a backup product.  Other backup
>     products we've used didn't have near as many functions as ADSM does in
>     backing up files, let alone any monitoring of items.
>
>     Sherry Jackson
>     Whirlpool Corporation
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