When we were running LTO3, we also were consistently
able to fill up tapes for a certain data set to about 1.2 TB. We had multiple
restores of all 1.2 TBs and validated the data. The data was actually cold
backups of Oracle databases, which surprised us since we had the same idea that
if they were ASCII text files, then yea, I could see that, but databases?
-Savil
From:
veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Paul Keating
Sent: Monday, February 25, 2008
12:38 PM
To:
veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] LTO
tapes handling more that it supposed
LTO3 is 400/800GB spec, assuming 2:1
compression.
You can get a LOT more than that on a
tape is your data is highly compressable (ie. ASCII text files)
--
-----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 WEAVER, Simon (external)
Sent: February 25, 2008 7:15 AM
To: Martin Ruslan;
veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] LTO
tapes handling more that it supposed
Hi Martin
You may have magic tapes :-)
Seriously, its likely the hardware does
compression, rather than your Data. Must admit, I have never heard it exceeed
the manufacturers claims.
Simon
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Martin Ruslan
Sent: Monday, February 25, 2008
11:48 AM
To:
veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] LTO tapes
handling more that it supposed
Dear gurus,
have you ever meet this condition?
My LTO3 tapes handling more than 800GB (about 1.2TB) on the media's report.
I don't have any idea for this.. The backup not running the compression also..
Is it maybe the block size or something? Need your advice..
Regards,
Martin
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