Can you please be more specific on your massive I/O problems? Are we talking 
about SCSI?  Fiber?  Tape?  Disk?  VMWare claims 60,000 I/O per second per ESX 
Host (assuming your disk can keep up) and explicitly says no tape drives for 
their configs.  I'd assume your problems are related to tape and not to disk?
 
-Jonathan

________________________________

From: veritas-bu-bounces AT mailman.eng.auburn DOT edu on behalf of Dave Carpe
Sent: Thu 5/22/2008 1:48 PM
To: Curtis Preston; WEAVER, Simon (external); Bluejay AT fujigreenwood DOT com; 
veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] VM Master / Media Servers



It is not supported. There are massive problems with the I/O.

David K. Carpe
Principal Systems Engineer
Symantec Corporation
Office: 646.487.6012
Mobile: 908.963.6818
Home Office: 973.940-1805
email: david_carpe AT symantec DOT com



-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu 
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Curtis 
Preston
Sent: Thursday, May 22, 2008 1:13 PM
To: WEAVER, Simon (external); Bluejay AT fujigreenwood DOT com; veritas-bu AT 
mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] VM Master / Media Servers

It works for me just fine, but I don't think it's supported.



Curtis Preston  |  VP Data Protection  
GlassHouse Technologies, Inc.
 
T: +1 760 710 2004 |  C: +1 760 419 5838 |  F: F: +1 760 710 2009  
cpreston AT glasshouse DOT com |  www.glasshouse.com
Infrastructure :: Optimized

-----Original Message-----
From: WEAVER, Simon (external) [mailto:simon.weaver AT astrium.eads DOT net]
Sent: Wednesday, May 21, 2008 11:24 PM
To: Curtis Preston; Bluejay AT fujigreenwood DOT com; veritas-bu AT 
mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] VM Master / Media Servers


Hi Curtis
Well guess what...... there is a client that is looking at VM'ing Master and 
Media Servers and want to use a tape drive or robot!

I am under the impression its not supported or works. Your comments seem to 
reflect this may not be the case.

Can you clarify?

Simon

-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu 
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Curtis 
Preston
Sent: Wednesday, May 21, 2008 10:31 PM
To: Bluejay AT fujigreenwood DOT com; veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] VM Master / Media Servers

When you say they don't support, you must mean that they won't give you support 
on it.  All you have to do is create virtual scsi devices for each tape 
drive/robot device, then you see the robot and drives in the guest OS. 

Admittedly, I haven't done it for production, but I haven't found it to be too 
difficult or unreliable.

BUT, I'm trying to figure out why anyone would do that in production.  
Performance SUCKS!



Curtis Preston  |  VP Data Protection
GlassHouse Technologies, Inc.
 
T: +1 760 710 2004 |  C: +1 760 419 5838 |  F: F: +1 760 710 2009 cpreston AT 
glasshouse DOT com |  www.glasshouse.com Infrastructure :: Optimized

-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu 
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Bluejay 
AT fujigreenwood DOT com
Sent: Tuesday, May 13, 2008 4:10 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] VM Master / Media Servers

> Is Symantec actually going to be supporting a Virtual Machine as a
> Master or Media Server (San Media too), which can use SSO to share a
> tape library?

A recent exercise with VMware a few months ago brought to light that VMware 
does NOT support guest access to SAN-based tape drives, and has no plans to do 
so. Some fiddling around managed to get a guest to see such tape drives, but 
they did not work reliably at all.

                                                                      - Bluejay 
Adametz

"I took off my watch and found I had all the time in the world."
- The Association

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