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Re: [Networker] How often do you replace tapes?
2011-03-21 17:13:42
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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