35GB is the minimum size for a virtualized load source. Make sure to set
the size big enough when you create the NWS since the virtualization takes
about 12% or so. I always use 40140Mb for the size of my drives so you get
the full 35840 needed for the load source.
Beyond that Rob has it nailed.
--
Jim Oberholtzer
Agile Technology Architects
-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Rob
Berendt
Sent: Wednesday, November 01, 2017 7:44 AM
To: Midrange Systems Technical Discussion
Subject: Re: Recovering NWSD
Keep in mind there are two parts:
WRKNWSD
WRKNWSSTG
By not backing up the storage spaces, often done by CHGATR OBJ('/QFPNWSSTG')
ATR(*ALWSAV) VALUE(*NO) you shouldn't affect the saving of the WRKNWSD stuff
(too much)
WRKNWSD can be tied to WRKOBJ OBJ(*ALL) OBJTYPE(*NWSD) I don't believe there
is a similar object to tie to WRKNWSSTG
We have three Power 8's.
Each Power 8 has an lpar of IBM i doing this hosting. They do no other
function.
Each hosting lpar of IBM i has at least 5 guests. These guests may be a mix
of AIX and IBM i.
We only save the hosts once a quarter. On those saves we never save the
storage spaces.
The only time we save the storage spaces on the host is when we forgo saving
the individual guests. Normally a once in a lifetime for that generation of
Power system (if that). For example, a data center move.
Some may look at rebuilding the storage spaces as an opportunity to do them
right. For example, based on the size of that guest,
- Should you use more than one NWSD?
- How many storage spaces? (much like disk arms, there is some benefit to
threading the operations out to multiple storage spaces)
- How many storage spaces per NWSD?
- Do I need to resize my load source? (Note: Load source size on a guest
can be much smaller than load source size on a physical disk!)
Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600 Mail
to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com
From: Ian Edmonds <IEdmonds@xxxxxxxxxxxxx>
To: "'MIDRANGE-L@xxxxxxxxxxxx'" <MIDRANGE-L@xxxxxxxxxxxx>
Date: 11/01/2017 08:01 AM
Subject: Recovering NWSD
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>
Bit of an odd query, but what is the impact of rebuilding a virtual
iSeries from scratch (if you have retrieved the config via RTVCFGSRC) as
oppose to restoring it from tape?
The reason I ask is that the image we have on tape is huge. We save the
entire IFS to a VTL using BRMS only on a restricted state backup and it is
taking up a lot of space on our VTL and takes a long time. We also backup
the virtual iSeries in the normal way, again using BRMS.
If I could skip backing up the NWSD object, it would help.
Note: the virtual iSeries is test, not live and it is hosted on a
development machine.
Ian
n
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