I understand Remco's point but I think TSM can handle 7 years of retention
just fine and that the format is the bigger challenge here...full VM.
I'm sure there are rules that require you to do this but 7 years is crazy
long for full VM backups if it's about a lot of source data.
So far i've always been able to convince the customer that a regular
incremental backup with a B/A node of specific data with 7 years retention
will be just fine and a lot smaller than the whole VM, it also gives you a
better guarantee that you will be able to restore because a VM that's 7
years old might have compatibility issues with the than current vSphere
stack.
I'm sorry I can't help you with your sizing, I would share if I would have
the data but I don't, I give VM backups a maximum of 3 months retention and
that's incremental forever only.
Good luck.
On Wed, Feb 7, 2018 at 9:07 AM, Remco Post <r.post AT plcs DOT nl> wrote:
> > Op 7 feb. 2018, om 03:16 heeft Harris, Steven <steven.harris@
> BTFINANCIALGROUP.COM> het volgende geschreven:
> >
> > Hi Guys
> >
> > There is a really good explanation of VMCTLMC Sizing for incremental VM
> backups at http://adsm.se/?p=546
> > I run a monthly full for compliance reasons on all the Prod Vms, and am
> trying to understand the implications for VMCTLMC Sizing. So far I
> suppose its 8000 megablocks as well as 8000 control files per TB so
> 8000*(128+73) KB ~= 1.5 MB/TB.
> >
> > As there is a 7 year retention for these I see why I'm running out of
> space.
> >
> > The only option I can see would be a 1 year retention and a monthly
> export to tape for this data. What do others do?
> >
>
> I just keep on insisting: backups are for disasters (big and small)
> archives are for lawyers (and other nitwits that make up rules). So, 7 year
> retention goes into an archive solution, not TSM. And I can make people
> understand quite simply: so the e-mail I get on the 5th of the month and
> delete the next day is less important to rule makers than the one I get on
> the day of the month that we happen to take our full backups? I know what
> I’ll do, I won’t do the illegal stuff at the end of the month!
>
> Yes, that doesn’t solve your problem….
>
> > Cheers
> >
> > Steve
> >
> > TSM Admin/Consultant
> > Canberra/Australia
> >
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> --
>
> Met vriendelijke groeten/Kind Regards,
>
> Remco Post
> r.post AT plcs DOT nl
> +31 6 248 21 622
>
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