Another ditto. We routinely get a minimum of 3x compression on our SQL
and Oracle DB backups. We are using LTO-2 and the least amount I had
written to tape for DB backups was 597GB. Normal is 600+GB. 


Thanks,

Dana

-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]
On Behalf Of Browning, David
Sent: Tuesday, April 04, 2006 11:47 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: 1.2TB LTO3?

I agree, we get close to 3x on our SQL databases on our LTO-2's.   

Exchange data can be close to 2x, and of course, other data is a little
less than 2x.  

David M. Browning Jr.
LSUHSC Enterprise Network Operations/Help Desk

-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]
On Behalf Of Jeff Mery
Sent: Tuesday, April 04, 2006 9:06 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] 1.2TB LTO3?

I can't speak directly to LTO-3, but we've seen almost 4x compression on
our LTO-2 with our larger Oracle databases.  (Networker 7.1.4 on Solaris
9
w/ FC-native LTO-2 drives)

Jeff Mery - MCSE, MCP
National Instruments

------------------------------------------------------------------------
-
"Allow me to extol the virtues of the Net Fairy, and of all the
fantastic dorks that make the nice packets go from here to there. Amen."
TB - Penny Arcade
------------------------------------------------------------------------
-



Dave Mussulman <mussulma AT UIUC DOT EDU>
Sent by: Legato NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
04/04/2006 08:57 AM
Please respond to
Legato NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>; Please
respond to Dave Mussulman <mussulma AT UIUC DOT EDU>


To
NETWORKER AT LISTSERV.TEMPLE DOT EDU
cc

Subject
[Networker] 1.2TB LTO3?






I got a sales flyer in the mail today for an LTO-3 Ultrium drive that
does 1.2TB/tape and 160MB/s.  In our environment, I've seen our drives
stream at near 160MB/s, but I've never seen any of our tapes get the 3x
compression 1.2TB offers.  Scanning through the library, I'd say our
average is around 650GB/tape with a few in the 750GB area.

Is it just my data, and are other groups seeing more than 2x
compression?  Anything close to 3x?

Dave

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