I see your recommendation of 79565.
Yet, this IBM link http://www-01.ibm.com/support/docview.wss?uid=nas8N1013717
says The smallest load source capacity allowed is 17 GB (document is discussing 6.1 & 7.1). In order to have a virtual disk of size 17 GB, it must be created as a 19.2 GB drive. Technically the system will allow a smaller disk size when using virtual disks; however, this will cause problems later--for example, when you go to upgrade to the next release and try to expand the LIC space.
Since a 17GB drive is referring to the 17.5 GB drives, which is 1/4 that of a 70GB drive, why wouldn't you multiple 19.2GB by 4 and get 76,800 when using the CRTNWSSTG command?
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Sue Baker
Sent: Wednesday, October 16, 2013 7:30 PM
Subject: Re: 7.2 Was: IBM i 7.1 Technology Refresh 7 available Nov. 15-CLARIFICATION on POWER5
Jim Oberholtzer <midrangel@xxxxxxxxxxxxxxxxx> wrote on Wed, 16 Oct 2013 23:01:23 GMT:
The LPARs are anywhere between 15 and 30 virtual drives all at 35GB
right now. I'm going to set up at least two or more vSCSI controllers
on each, so we can vitrualize tape/dvd on one then have the others for
With that quantity of virtual devices, doubling all the VSCSI units to 70G would be lots of storage. I think in this specific case, 70G load source and then specifying *ENDALC after you get LIC, QSYS, QUSRSYS, QGPL loaded and balanced would be an appropriate plan.
When you create the load source unit via CRTNWSSTG, make sure you don't specify 70000 "megabytes" as your size (NWSSIZE) because you won't really end up with 70 GB. You need to specify as 71680 to really get to 70 GB. However, don't forget the 512- byte translation makes the i client LPAR see this unit as 11% smaller, so it would end up at approximately 62 GB.
To have the client see a 70 GB (or slightly larger) unit, you want to define at 79565 megabytes in the CRTNWSSTG command.
IBM Americas Advanced Technical Skills (ATS) Power Systems Rochester, MN
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