Re: Backupsets and Export Node
2005-03-22 16:20:30
Thanks Mark, I worded that very badly.
What I was trying to convey:
Once Marco does the EXPORT (which is a copy) and then deletes the
filespaces from the TSM server, there is NO inventory of the data
anywhere. You must re-IMPORT at least one entire filespace, in order to
find out what is on the export tape, or to restore a file.
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Stapleton, Mark
Sent: Tuesday, March 22, 2005 3:26 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Backupsets and Export Node
Just a quibble or two here...
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On
Behalf Of Prather, Wanda
>>(1). If I do generate backupsets for these nodes, can I then
>>delete the filespace data to free up Tape Library space?
>
>Yes. But before you decide that is a good thing, think
>about what you
>would do, if someone ever wanted to retrieve a file off the tape.
>Deleting the filespace data means all the file entries are purged from
>the TSM db. You have no "inventory" of the data any more.
>I believe it is possible, although difficult, to retrieve a single file
>off a backupset tape. Better try it.
Yes, you can retrieve individual files from a backupset, but you have to
know both the filename and the directory tree the file resides in to get
it back
>>2). If I opt for export node, could I export the nodes, remove all
>>references to the nodes and re-import to the same TSM server if I ever
>>need to?
>
>Yes. In the case of EXPORT, all the TSM DB entries are removed as
>well. To access ANY of the data, you have to re-import the tape.
That is incorrect. An export command does not move data, it copies it.
All exported data will still exist after the export is complete.
--
Mark Stapleton (stapleton AT berbee DOT com)
Office 262.521.5627
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