Re: Long running backups to a 3590-B11

Jeff,

I have 2 ea. 3590 B11 tape drives here.  A couple of things you should
check:

1.)  On your SAVLIB *NONSYS:  Check the USEOPTBLK parameter.  For 3590 tape
drives it should be set to *YES.  It made a big difference for us here.
That got overlooked in the CL programs here when we first installed 3590.

2.)  For your CE:  What bus is the 3590 on?  It makes a big difference as to
where the 6501 card is placed in the configuration.  Have him check and
confirm this in the rack config.  It should not be on the same bus as your
disk IOP's.  Make sure the rules of engagement for placement of IOP's within
your AS/400 and model is in fact being done in practice.

HTH,

Mike Shaw
Senior AS/400 Technical Support
North American Mortgage
Santa Rosa, CA

----- Original Message -----

> Has anyone else had a similar problem -
>
> I have a system with 102GB of DASD, running at about 80% used.  It has
> regularly taken between 11 to 13 hours to do a full system backup each
> weekend (SAVSYS + NONSYS + SAVDLO + SAV (ifs)).  All of a sudden, the
> backups started taking 15/16 hours.  I have recently upgraded to v4r3
(from
> v4r1), initiallly the backups jumped to 28 hours!!  IBM recommended we
apply
> additional PTFs, a series of group-ptf packages, this cut the 28 to 18 but
> this is still very painful to system availablility, as you can imagine.
>
> I am liaising with IBM and with the CE; I've stopped saving access paths,
> I'm getting staff to delete old/redundant data, what more can I do?  Has
> anyone had similar experiences or have some advice ?
>
> Kind regards,
> Jeff Bull.
> Senior AS/400 Support Consultant (AS/400)
> Midas Kapiti International Ltd
>
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