Re: Virtual tape - object size

http://archive.midrange.com/midrange-l/201202/msg00162.html


Rob Berendt
--
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
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http://www.dekko.com





From: Jeff Crosby <jlcrosby@xxxxxxxxxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>,
Date: 04/17/2012 11:06 AM
Subject: Virtual tape - object size
Sent by: midrange-l-bounces@xxxxxxxxxxxx



All,

I've done a little experimenting recently with virtual tape. I
successfully did a DUPTAP from a physical tape drive to virtual and
vice versa.

The object size is 71gb on the virtual tape (VRT001) afterward. I did
INZTAP on it. Still 71gb. So I did INZTAP clearing it. Still 71gb.

So evidently, when it reaches a size, it stays that size. Is there a
way to reduce it? Disk space isn't a problem, but nightly backup
takes an extra 20 minutes and that's the only difference I know of.

I did a CHGATR ATR(*ALWSAV) VALUE(*NO) on it for now.

Thanks.


(BTW: I have 2 physical LTO2 tape drives. A Phys to Phys DUPTAP took
37 mins, Phys to Virt took 38 mins, Virt to Phys took 28 mins. All
with no system degradation.)



--
Jeff Crosby
VP Information Systems
UniPro FoodService/Dilgard
P.O. Box 13369
Ft. Wayne, IN 46868-3369
260-422-7531
www.dilgardfoods.com

The opinions expressed are my own and not necessarily the opinion of
my company. Unless I say so.
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