Flashcopy in AS/400

175 pts.
Tags:
AS/400
Backup
In one of our AS/400 systems, we have heavy loaded data and backup takes so much time more than 11 hours. We like to run backups through flashcopy. On the another system we have clusters and geomirror, just need to confirm if we can set up flashcopy on the same system where geomirroring running so that we can set production free. Or else we need to have new partition to run flashcopy backups. Thanks!


Software/Hardware used:
v7r1m0
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  • CharlieBrowne

    11 Hours for a backup seems a bit much. Are you backing up to *SAVF or some other media? Are you doing SAVCHGOBJ or full backup? Do you use journaling?

    First thing I would do is to do a real analysis of what is being backed up and why.

    Is this daily, weekly, or some other time frame? 

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  • ToddN2000
    I agree with Charlie. What type of backup are you running. Are you using the save while active option? What media are you using. You may also have a lot of deleted data in the files. Have they been reorged lately (RGZPFM)?. Example We have a few files that keep track of locks. So if we look at the files we can see maybe 15 active records but thousands and thousands of deleted records. A little more info and we may be able to provide a better solution.
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  • deepakt1
    Hi , We are taking almost full system backups on the daily basis,and i really dont know why management wants this kind of backups on daily,kindly find the details of daily backup below:

    *EXIT    
     *SAVSECDTA
     *SAVCFG  
     *ALLUSR  
     *ALLUSR  
     *ALLDLO  
     *EXIT    
     ALFALINK 
     ALFALINKH
     *EXIT      full backups on daily.

    We have LTO5 tape media for this backup and we reorg once in 2 months however cleanup is done every month end. I extracted the data from STGINF tool which we using ,around 140 GB data can be reorg and journals can be cleaned.
    11 hours is the maximum time and this is also tentative.so sometime it finishes it 8 or 9 hours also.

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  • deepakt1
    hi, can someone plese help me out on this?
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  • TheRealRaven
    ...kindly find the details of daily backup below:

    You listed a bunch of items, but it's not cloear what those items are. For example, what is "*EXIT"? And what are the 'ALPHALINK' items? Why is "*ALLUSR" listed twice?

    And I assume that "*ALLDLO" means that you are saving /QDLS items; but why would you have any /QDLS items at all to save? Those have been practically obsolete for a couple decades and should have converted to something more modern long ago. (It'd be interesting to see what performance is like for them.)

    ...
    and we reorg once in 2 months...

    "Reorg"? What would you need to "reorg"? Database reorgs haven't been needed for quite a few years. Are you referring to something different?

    140GB is not a very large amount. Was that a typo? (It's similar to the data I have on a small model 515 system I have at home, and actual full-system saves take me far less than 11 hours with a much slower tape system.)
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  • ToddN2000
    Is it possible to post the backup command you are using?

    We still use reorgs here Raven. Our software vendor does not take advantage of the re-use deleted records when their files are created. It has saved us one or twice being able to recover the deleted records using a 3rd party program. But we have a lot of files we RGZPFM monthly.

    He may be doing backups based on his software vendor.
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  • TheRealRaven
    @ToddN2000: Does the software rely on REUSEDLT(*NO)? If it does, then reorgs could be trouble. If it doesn't, then why keep the files that way? Just curious because there might be a reason.
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  • ToddN2000
    When creating the files I think the default is *NO. They may not have change it or just forgot. I'm not sure why IBM does not make the default *YES. Granted I found a utility that would let you go back into the file and remove the delete flag and I was able to recover some data. It kind of works like a DFU. So because of either IBM of our vendor not changing the default I got our data back.
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