Re: Long running backups to a 3590-B11

Is your 3590 directly attached?(scsi) or is going through a network
somehow(adsm or something).

My last full system backup only took 4 hours and I am using a mlr1 1/4" tape
drive at about 50GB,  Thats about 12 GB per hour. Which is about what the
mlr1 is rate at 10-12 GB per hour I was told.

With that said you could backup your system faster with a 1/4" drive. You
should be able to smoke that with a 3590.  Rated at 40 to 60GB per hour say
2 to 3 hours should be all it should take. And just think at V4R5 that is
supposed to go up as high as 120GB per hour.

My guess you had something wrong before.
I may be wrong, but we just flew in IBM'rs and other venders in from Texas
and Rochester to have a discussion on tape drives, and this was all from
them.


----- Original Message -----
From: "Bull, Jeff" <BullJ1@midas-kapiti.com>
To: <MIDRANGE-L@midrange.com>
Sent: Thursday, April 06, 2000 4:58 AM
Subject: Long running backups to a 3590-B11


> 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
>
> Tel: 44 (0) 175 370 8224
> Fax: 44 (0) 175 357 0233
> Email: Jeff.Bull@Midas-Kapiti.Com  << == Replies to
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