Networker

Re: [Networker] Save Set Consolidation - Any Thoughts?

2005-12-28 09:34:31
Subject: Re: [Networker] Save Set Consolidation - Any Thoughts?
From: "Wood, R A (Bob)" <WoodR AT CHEVRON DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Wed, 28 Dec 2005 14:26:57 -0000
Kathleen,
        It is still early days, I'm afraid. Before I can switch to
consolidated fulls I needed to make sure that I had a good full here to
work with. This completed over the Christmas break. So this weekend will
be the first proper consolidated full using disk.

        I should have some news on Monday.

Regards
Bob 

-----Original Message-----
From: Scalise, Kathleen (NSTS.JAX) [mailto:kathleen_scalise AT ml DOT com] 
Sent: 28 December 2005 13:36
To: Legato NetWorker discussion; Wood, R A (Bob)
Subject: RE: [Networker] Save Set Consolidation - Any Thoughts?

Bob:

Anything new to report on the consolidation?

Kathleen Scalise
Asst. Vice President
Network Services and Technology Support
Merrill Lynch - Jacksonville, Florida
Phone:  904.218.5139
Fax:  904.218.5445
kathleen_scalise AT ml DOT com


-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]
On Behalf Of Wood, R A (Bob)
Sent: Tuesday, December 20, 2005 4:28 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] Save Set Consolidation - Any Thoughts?


Stephen,
        My early experiences with consolidation were not that good (it
seemed to grab more tape drives than I thought it should and caused
minot problems) on reflection, however, I think consolidation is a good
idea. To consolidate 1 client took three drives (one for the last full,
one for the incremental backups and one to write the consolidated full)
I was just underpowered when I tried it (only had 6 drives).

        We're trialing consolidation again, for a client on a slow link
(trying to eliminate user intervention at remote end), this time we
intend to save to disk first. On paper, at least, this should work quite
well, will know in a few weeks whether it is working as required or
whether there is some other gotcha (i.e. may have to create a new pool
for the consolidated fulls to get round the single read on a disk
device, etc.)

Regards
Bob

 

-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]
On Behalf Of Jones, Stephen (East Kilbride) [OS-IE]
Sent: 19 December 2005 10:55
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] Save Set Consolidation - Any Thoughts?

Hi,

We are considering implementing save set consolidation on some of our
larger backups to reduce the backup window. However, I am concerned
about the additional load that this might place on our tape drives and
backup servers / storage nodes. Before we implement it I'm keen to gauge
the reactions of other forum members regarding its suitability and
performance.

- Does anyone have any experience of using Save Set Consolidation? 
- Does it do what it says on the tin? 
- Does it cause any problems with tape drives and backup server /
storage node? 
- Does it introduce additional admin complexity or is it fairly
straightforward? 
- Does it work with database module backups or is it just file system
backups? 
- Anything else we should be aware of?

We are thinking of introducing this on systems that backup 1TB+ of data
to LTO2 drives via Solaris backup servers / storage nodes.

Your thoughts would be appreciated....

Many Thanks,
Stephen

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