Ken,
What does it mean you don't limit the size of the volume?
I understand a job can write as much as it need to a single volume,
that's fine.
However tools like DFSMSHSM tend to fill the volume up. In that case
some limit has to be used, otherwise the volume wiil grow up indefinitely.
How do you address this issue?
Regards
--
Radoslaw Skorupka
Lodz, Poland
W dniu 2018-05-18 o 20:05, Ken Bloom pisze:
Hi Russell
We don't limit the size of the VTL volume so size doesn't enter into it.
Regards
Ken
Kenneth A. Bloom
CEO
Avenir Technologies Inc
/d/b/a Visara International
203-984-2235
[email protected]
www.visara.com
On May 18, 2018, at 2:03 PM, Russell Witt <[email protected]> wrote:
Tony,
Another item to throw into the mix is what size of virtual-volumes you define
them as. With 3490's, you can define the virtual-volumes in Gigabytes of
capacity. If you stack lots of very small files, you run into a problem with
the Block-ID not being large enough. With them defined as 3590's, the block-id
issue is non-existent because the Block-ID is a 4-byte field on the 3590's. So,
if you like to define your virtual-volumes as large volumes; it might actually
be better to define them as 3590's.
Russell Witt
[email protected]
-----Original Message-----
From: Tony Thigpen <[email protected]>
To: IBM-MAIN <[email protected]>
Sent: Fri, May 18, 2018 12:52 pm
Subject: VTL as 3490 vs 3590
For a little fun on Friday afternoon.
We will be replacing our current VTL.
The new VTL can be configured to look like 3490s or 3590s. Our current
VTL is defined to z/OS as 3490s.
Some of the staff are saying: "All VTLs should be defined as 3490s
because that is what everybody does."
Others are saying: "Let's make them 3590s because then they match the
few remaining physical 3590s and if we have an issue with the VTL we can
just swap the fiber and continue running on real 3590s until the problem
is fixed."
It was suggested I ask here to see what others are doing.
Thoughts?
--
Tony Thigpen
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