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Re: [Networker] How often do you replace tapes?
2011-03-23 05:37:44
Hello,
we change when change the tecnology, when change our backup
infraestructure. 4 or 5 year more or less.
Arkaitz
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ARKAITZ ABAD URIARTE
Euskal Herriko Unibertsitatea Email: arkaitz.abad @ehu.es
Bizkaiko I.I.S.I.G Tel. : 94 601 8390
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Aurreztu papera. E-posta hau inprimatu beharra daukazu?
Yaron Zabary <yaron AT ARISTO.TAU.AC DOT IL> escribió:
On 03/17/2011 09:03 PM, GustavoX wrote:
We need to design a policy for tapes replacement.
At the web I founded a recomendation for LTO4 media.
It must be replaced after 250 full backups.
So My idea it's to use the "recycled" counter as a limit (250) to
mark a tape ready for replacement.
Is it correct, please what do you think about IT?
I think you don't need to bother. Even if you write each tape
every month, 250 is over 20 years. By that time you will probably
replace your drives (and therefore your media) at least three times.
In 1998 we replaced our aging Exabyte library with a new StorageTek
DLT7000 library. Since then we switch to DLT8000, LTO-2, LTO-3 and
LTO-4. That is less than four years per media generation. Even if
you replace drives twice (every eight years), you will probably
never have to deal with tapes replacements.
On a side note, I don't recall having a media failure (maybe on
DLT we had some). But then again, all my tapes are always in the
library, protected from dust and temperature changes and I also try
to make sure all tapes go thermal conditioning before I use them.
Thank you very much!
Gustavo. Uehara
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