Re: [Veritas-bu] Media Tape lifespan

What’s you reference for these nums?

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W. Curtis Preston

VP Data Protection, GlassHouse Technologies

From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Josef Weingand
Sent: Monday, December 17, 2007 8:22 AM
To: Jackson, Todd
Cc: WEAVER, Simon (external); veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Media Tape lifespan

The LTO Specs says:
Long-length durability: 260 full file passes
Short-length durability: 5000 load, unload, and initialization cycles
Limited lifetime warranty: ?
Archive live: up to 30 years

Some vendors gives some enhanced specs, like IBM LTO cartridges:
Long-length durability 300 full file passes
Short-length durability 20 000 short section durability passes
Load/unload 20 000 load/unload cycles
Limited lifetime warranty 5 years (manufacturing defects only)
Archive live: up to 30 years

Mit freundlichen Grüßen / Kind regards
Josef Weingand
Senior IT Specialist
Technical Sales Systems Storage

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From:	"Jackson, Todd" <c-todd.jackson AT invitrogen DOT com>
To:	"WEAVER, Simon \(external\)" <simon.weaver AT astrium.eads DOT net>, <veritas-bu AT mailman.eng.auburn DOT edu>
Date:	14.12.2007 16:27
Subject:	Re: [Veritas-bu] Media Tape lifespan

Yes it does help. Currently this concern is for auditing purposes for a tape destruction plan.
Normally I would use until it dies but here it is regulatory needs. I was thinking of setting
a lifespan between 500-1000 mounts. NB has it set to stop using after 5000 mounts but I need
a decent number and wondering if 1000 is expecting a bit much for audits.

From: WEAVER, Simon (external) [mailto:simon.weaver AT astrium.eads DOT net]
Sent: Friday, December 14, 2007 10:20 AM
To: Jackson, Todd; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Media Tape lifespan

Well unless you get problems, then continue to use them where possible.

As soon as I get read / write issues, then its time to throw away....

Lifespans of tapes (especially LTO) isnt straight forward as it may seem. I think the estimate life is 20 - 30 years. But by then, we would be on LTO17 or something like that!

Also, manufacturer of tape may come into question. As a guess, if the tape is using 300+ mounts, then your getting good serious use out of the tape.

Hope this may help....
Simon
-----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 Jackson, Todd
Sent: Friday, December 14, 2007 3:16 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Media Tape lifespan

How long should you use a media tape such as Quantum LTO2 tapes?

There is no standard concerning this but I have read a few different opinions.
I would think mounts would be more important then writes because reading
a tape can be just a strenuous to the tape as writing to the tape.

If anyone has something in place for tape destruction please share

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