Veritas-bu

Re: [Veritas-bu] Lets hear about your upgrade experience! 5.x - 6.5

2008-03-12 14:00:51
Subject: Re: [Veritas-bu] Lets hear about your upgrade experience! 5.x - 6.5
From: "Paul Keating" <pkeating AT bank-banque-canada DOT ca>
To: <veritas-bu AT mailman.eng.auburn DOT edu>
Date: Wed, 12 Mar 2008 13:33:23 -0400
It would have been nice to have an upgrade option that allowed a "new" 6.5 environment to just "import" a 5.x config.
 
I intend on doing a hardware refresh at the same time.
Since I'm currently runnin 5.0 MP4, which isn't supported on Solaris 10, I'm looking at upgrading the exisitng env to 5.1 MP6, then building a new Solaris 10 env on new hardware, importing the 5.0 catalog, then upgrading the Sol10 env to 6.5.1
 
It would be much nicer to build the Sol 10 env with a fresh install of 6.5.1 and just import the 5.0 catalog.
:o/
 
Paul
 
 
--
-----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 Ed Wilts
Sent: March 12, 2008 12:56 PM
To: WEAVER, Simon (external)
Cc: veritas-bu AT mailman.eng.auburn DOT edu; Jeff Lightner
Subject: Re: [Veritas-bu] Lets hear about your upgrade experience! 5.x - 6.5

On Wed, Mar 12, 2008 at 10:33 AM, WEAVER, Simon (external) <simon.weaver AT astrium.eads DOT net> wrote:

>  it seems that going from 5.1 to 6.5 or even 6.5.1 should be the easier upgrade path.

What are you basing this on?  The 6.0 to 6.5 upgrade has been relatively painless for everybody.  It's always been the 5.x to 6.0 upgrade that has been the issue and the steps to do that are in the 5.1 to 6.5 path - you can't avoid the migration by skipping 6.0.

In general, the uglier the source environment in 5.1, the uglier the migration, and it hasn't always been the admin's fault (although sometimes it has been).  Some things worked in earlier releases but were never really documented or supported and NetBackup is not unique in this.  The more complex the product is, the uglier upgrades are going to be since there are too many input permutations to even consider testing.  There are lots of environments out there where Symantec just says "we didn't know anybody was even doing *that*" or "we didn't even know you *could* do that".

If the source environment would have been bugfree since it was installed, it would be easier, but it wasn't - all releases that I've worked on, going back to 3.4 had some set of bugs that would leave the system in weird and wonderful states.  That makes the upgrade even harder since they can't just trust that the source system was pristine.  It also doesn't help that sometimes the upgrade processes themselves have bugs.

> maybe careful planning is the key?

Careful planning is always key but this alone doesn't guarantee a successful outcome.  Part of the planning, however, should include a fall back plan...

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