Re: Windows on ibm power -- MIDRANGE-L

Sorta. ANY Hosted system uses disk from the host partition including Hosted Windows, Linux, IBM i, and AIX. The support works the same for all. Using WRKNWSSTG you create virtual disk units for use by the hosted partition (Linux, IBM i, AIX) or server (windows-any flavor IXS, IXA, or iSCSI). Each image you create appears to the guest/hosted OS as one disk unit. The units appears as unprotected disk much as they would in a SAN and in fact you can think of IBM i being a SAN host to these OSs. Protection is not needed because IBM i has the storage protected already.

As with all things 'i' the actual storage is spread across all available disk arms of the host operating system, you are NOT assigning physical volumes from IBM i to the hosted OS.

Of course that disk must 'come from' some where and in this case each disk unit is a set of files in the IFS of IBM i. In the directory QFPNWSSTG you will find a sub-directory for each disk unit that is created. In that sub-directory are usually three hidden files. One contains the description and size and other information, the second is the storage itself (can be *REALLLYBIG*) and the third (small) is something I'm not sure what it's for :-) In any case creation of these disks 'permanently' occupies this space on the host IBM i disk and increases the % FULL by the appropriate amount. Of course deleting the virtual disk gives the space back but that's not such a kind thing for the guest OS!

You can back these 'disks' up with the SAV command and restore them as well. You can copy them either with WRKLNK or Qshell or with the WRKNWSSTG command (recommended) and you can FTP them from system to system as well. Do note of course that the guest operating system may need to be shut down during the copy.

So the short answer to Sharing is 'notsomuch'. IBM i hosts the storage but whatever is allocated to the hosted OS is usable ONLY to the hosted OS until a future time when it is deleted and the IBM i host gets that space back.

- Larry "DrFranken" Bolhuis

On 10/27/2010 9:05 AM, Bryce Martin wrote:

So I'm assuming that the two environments share disk?

Thanks
Bryce Martin
Programmer/Analyst I
570-546-4777

"Paul Nelson"<nelsonp@xxxxxxxxxxxxx>
Sent by: midrange-l-bounces@xxxxxxxxxxxx
10/27/2010 08:41 AM
Please respond to
Midrange Systems Technical Discussion<midrange-l@xxxxxxxxxxxx>

To
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Subject
RE: Windows on ibm power

True statement. I have one client who still runs such a machine.
Everything
gets backed up in one pass.

Paul Nelson
Office 512-392-2577
Cell 708-670-6978
nelsonp@xxxxxxxxxxxxx

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Bryce Martin
Sent: Wednesday, October 27, 2010 7:16 AM
To: Midrange Systems Technical Discussion
Subject: Windows on ibm power

All,
I was having a conversation with someone yesterday and they mentioned that

they remember that you could run windows on the same box as an ibm i. Now,

I immediately was suspicious of this statement but they claimed that about

10 years ago there was a special processing card that you would put in the

machine that would be used to run the OS. Can anybody clear this up? Is
it possible to run IBM i and Windows on the same hardware platform? Even
considering virtualization options is this possible?

Thanks
Bryce Martin
Programmer/Analyst I
570-546-4777
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