Hi all!
I have a running Amanda config that runs on 20 DLT tapes and a changer. I would
like to make Amanda go on disk storage rather than tape storage (the "file:"
driver).
But I have a security problem. What if my disks crash? A Raid 5 is of course
the first thing I would do, but if my server gets a power overload, all of my
disks would burn, and so the backup data... I like the tapes because when the
data is written, only fire or water could make me loose this data. And this
list of breakdown causes is bigger if I use hard disks instead of tapes.
Why the hell do I want to unplug my brilliant DLT changer? Mainly because of
its performances: Amanda tells me it uses 1000ko/s writing a tape, and about
6500ko/s writing a disk. And I like this speed very much, because of the time
needed to back up data, and mainly because of the time needed to restore them...
But I am quite afraid of some hardware security issues. Could you help me
imagine a new backup security policy? Maybe 2 Amandas, one daily incremental
going on disk, and one weekly always full going on tape? But that's weird,
because one day per week I will have 2 Amandas getting the same data from the
same clients, and the clients do not really like that 2 different Amandas run
on them in the same time...
Any ideas?
Thanks!
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Jean-Christian SIMONETTI email: jean-christian.simonetti AT wanadoo DOT com
SysAdmin Wanadoo Portails phone: (+33)493004911
Sophia Antipolis, France
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