You will have problems if any system writes to a shared filesystem.  The 
buffering in Unix, Linux and Windows will make a filesystem inconsistent unless 
the filesystem has some kind of clustering support built in.

-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of
David Boyes
Sent: Friday, April 06, 2007 8:39 AM
To: [email protected]
Subject: Re: Pros/Cons of FCP connection DASD


> Richard - thank you for your very thoughtful and helpful analysis.
Right
> now all I have is 'mainframe' DASD available to my z/VM environment
but
> I've had IBM and others pushing to get access to the SAN.

You'll want that, if for no other reason than it lets you get access to
all that overallocated storage the SAN guys bought. 
 
> You mentioned sharing the SAN with Windows, AIX, ... - I assume you
just
> mean sharing the SAN and not sharing a common filesystem - or do you
mean
> that zLinux can share the same filesystem (data) as AIX?

For filesystems supported on both OSes, then yes, you can. You still
need to coordinate access if both systems have R/W access to a volume at
the same time, but the data is directly accessible. 

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