Re: IFS backup to Disk

Paul:

Assuming the image catalog IFS files do have the *ALWSAV attribute set to *YES, it would. Most image catalogs are not needed for a recovery so I routinely set the the IFS portions of them to *ALWSAV = *NO. Saves time and save space.

To save the image catalog object(s) you would have to:

SAVOBJ OBJ(*ALL)
LIB(QUSRSYS)
DEV(TAPVRT01)
OBJTYPE(*IMGCLG)

I often times put that at the end of the save script assuming QUSRSYS was not included. Then again an image catalog is really easy to rebuild with IBM's new enhancements so you really don't need to save them specifically.

The IFS entries for image catalogs regardless of the type being optical or tape are almost identical in structure so it really does not matter if the type is optical or tape. I often times will mix both into a single directory. No harm/No foul to do it. Just pick the appropriate files for the Image Catalog itself when you go to create it.

The biggest advantage for the virtual tape overhead is you can treat it just like any other tape. Save files have their own unique qualities. Neither technique is wrong, each have strengths and weaknesses. What's important is to have the option and apply it appropriately for the situation. I tend to gravitate towards the virtual tape because I use them quite a bit so they are very familiar.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 3/2/2012 11:16 AM, Musselman, Paul wrote:

Or you could use the SAVSAVFDTA command and copy the data to tape so you can restore directly from the tape.

Do image catalogs and virtual tape get saved along with the rest of the IFS?

Paul E Musselman
PaulMmn@xxxxxxxxxxxxxxxxxxxx

-----Original Message-----
From:midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Oberholtzer
Sent: Friday, March 02, 2012 10:18 AM
To: Midrange Systems Technical Discussion
Subject: Re: IFS backup to Disk

Another alternative would be to create an image catalog and use Virtual
Tape. That way the tape image can just be duped to physical tape
providing for a single step recover directly from the physical tape,
instead of having to restore the save file and then restore the needed
object.

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