Veritas-bu

[Veritas-bu] sharing tape devices between windows and unix

2004-04-01 13:08:23
Subject: [Veritas-bu] sharing tape devices between windows and unix
From: ewilts AT ewilts DOT org (Ed Wilts)
Date: Thu, 1 Apr 2004 12:08:23 -0600
On Thu, Apr 01, 2004 at 11:21:22AM -0600, Simon, John wrote:
> I would really recommend against sharing fibre devices between Windows
> and Unix. 

FWIW, we've been doing this for several years without issue.  Master
serve (and robot control host) is Solaris, and it's also a media server.
We've got another Solaris media server and a Win2K media server.  They
play fine together.
> 
> 1. Everytime you reboot you are going to cause PLOGI's on the fabris,
> and you know Windows reboots a lot, 

Not around here it doesn't. It may take a reboot a month but that's
about it, if it's even that frequently.


> since you are running JNI cards
> you will have problems because their implmentation of FCP2 error
> correction isn't quite complete. So rebooting a Windows machine could
> cause backups on the Unix box to fail (this assumes you are running
> JNI in the Unix boxes if not ignore this).

We're using Emulex HBAs in our Windows system.  We had a Solaris media
server running with a JNI card but its replacement is using an Emulex.


> 2. There are (or were as of last Sept) issues with SSO on Windows, it
> doesn't play nice with Unix, Windows will try to reserve the drives
> even when not in use. So be aware, the Unix box might not get to use
> the tape drives when it needs to.

We've never seen whatever issue you're referring to.

-- 
Ed Wilts, Mounds View, MN, USA
mailto:ewilts AT ewilts DOT org