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  3. November 2018

RE: How long should it take to initialize a 600gb NWS load source?

This was for a test only, actually 4 600gb drives.
If perm, I would have multiple NWSD serving smaller NWS.

Host LPAR was idle.
Its only current task was hosting the client LPAR.

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Oberholtzer
Sent: Tuesday, November 06, 2018 6:12 PM
To: Midrange Systems Technical Discussion
Subject: Re: How long should it take to initialize a 600gb NWS load source?

First question, why so large a drive? Multiple smaller ones would be more efficient both for the host and the client. Use multiple NWS servers to manage more drives.

Two: How busy was the host partition?

In the end I/O is I/O, and it will take what it takes. That's determined by many factors so I'm not sure the comparison is valid anyway.

Jim Oberholtzer
Agile Technology Architects



On Nov 5, 2018, at 11:57 PM, Evan Harris <auctionitis@xxxxxxxxx> wrote:

Hi Paul

OK; just my experience. I may be wrong. Well, actually it looks like I *am*
wrong.

I am surprised, but that's OK - thanks for posting the timing.

On Tue, Nov 6, 2018 at 4:58 PM Steinmetz, Paul <PSteinmetz@xxxxxxxxxx>
wrote:

Evan,

CRTNWSSTG NWSSTG(P08CRST1) NWSSIZE(600000) FROMNWSSTG(*NONE) FORMAT(*OPEN)
ASP(1) TEXT('P08 Rst 1') OFFSET(*FORMAT)
Took 4 hours to complete.

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Evan Harris
Sent: Monday, November 05, 2018 4:08 PM
To: Midrange Systems Technical Discussion
Subject: Re: How long should it take to initialize a 600gb NWS load source?

I think recreating the storage space would probably have been quicker, at
least that what my experience has been (though I do not have any actual
numbers to quantify this).

The only reason I can think of why this might be is that the CRTNWSSTG runs
on the host system and accesses the disk directly whereas the disk
initialization is going through a layer of virtualization.

I also think the CRTNWSSTG has less performance impact on the disks which
is useful if there is any workload running in the hosted LPAR.

On Tue, Nov 6, 2018 at 9:09 AM Steinmetz, Paul <PSteinmetz@xxxxxxxxxx>
wrote:

Paul,

I found the issue.
At the point of the restore, DST password is default, which is QSECOFR.
I was keying in the actual DST password.

But, I had to shutdown, no command access to issue the CHGDSTPWD
PASSWORD(*DEFAULT).
Live and learn.
And I had to initialize the load source, AGAIN, for a second time,
another
3 1/2 hours.

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Musselman, Paul
Sent: Monday, November 05, 2018 2:59 PM
To: Midrange Systems Technical Discussion
Subject: RE: How long should it take to initialize a 600gb NWS load
source?

Paul--

You should be able to reset the DST password without a complete shutdown.

As QSECOFR: (You must be QSECOFR, not a QSECOFR-look-alike)
CHGDSTPWD PASSWORD(*DEFAULT)

This should put it back to QSECOFR (or is it qsecofr? I forget)

Paul E Musselman
PaulMmn@xxxxxxxxxxxxx

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxx> On Behalf Of
Steinmetz, Paul
Sent: Saturday, November 03, 2018 11:51 PM
To: 'Midrange Systems Technical Discussion' <midrange-l@xxxxxxxxxxxx>
Subject: RE: How long should it take to initialize a 600gb NWS load
source?
...
When trying to enter DST, DST password became disabled.
Had to shutdown to reset DST password.
...
Paul
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--

Regards
Evan Harris
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--

Regards
Evan Harris
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