Geoff,

As you well know, it isn't the 12TB that's the problem: it's the 40M files 
they're going to put on it!

Actually, I think TSM is the only thing that will be able to backup such a 
thing.  Incremental forever is the only way.  Put Journaling on and it gets 
done.

Now, that's backup.

Forget restoring it!  That won't happen in any reasonable amount of time now 
will it?

Kelly Lipp
Chief Technology Officer
www.storserver.com
719-266-8777 x7105
STORServer solves your data backup challenges. 
Once and for all.


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Gill, Geoffrey L.
Sent: Wednesday, May 26, 2010 5:04 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] why create a 12TB LUN

I'm guessing many of you will find this quite odd, I know I did, but I
had someone come to me and say they were going to ask for a 12TB LUN and
wanted to back it up. Without even mentioning the product they want to
use, obviously not TSM though, and I'm not even sure it would make
difference, how would you manage to get a 12TB LUN backed up daily. I
would expect it to be at least 75% full if not more, and even without
knowing what percentage of data changes on it, it would seem to me the
request seems strange. They're thinking of getting a VTL and backing up
through fiber direct, not across the network, but no idea which one or
what sort of throughput to expect.

 

Have any of you been approached with this sort of request and if so what
was your response? I'm sort of dumbfounded at this point since I've not
heard or seen this anywhere.

Thanks,

 

Geoff Gill 
TSM/PeopleSoft Administrator 

SAIC M/S-B1P 

4224 Campus Pt. Ct.

San Diego, CA  92121
(858)826-4062 (office)

(858)412-9883 (blackberry)