On 2010-12-31 10:35, Marc Muehlfeld wrote:
Hello,
Am 31.12.2010 10:19, schrieb Paul Bijnens:
Here is what I wrote about it a few years ago:
http://wiki.zmanda.com/index.php/How_To:Mirror_Dumps_to_Virtual_Tapes_and_Real_Tapes_using_RAIT
This seems to be a good solution. I'll try it.
But one question about it: What happens, if one of my storage is down
during backup? Is then the data written to the other one and kept in the
holding disk for flushing to later to the first one? How amanda handles
this situation?
This explains some more about the RAIT, and the differences between RAID and
RAIT:
http://wiki.zmanda.com/man/amanda-devices.7.html
(Section "RAIT Device")
and indeed, the handling of error-modes is different.
Unlike RAID, a RAIT will not automatically handle the failure of one of
components.
A RAID system will continue functioning in a degraded state, while the RAIT
device
will not write in a degraded state. It does allow reading in a degraded state,
in order to support recoveries.
But you can of course change the tapedev string while the disksystem is being
repaired, and continue
using Amanda.
--
Paul Bijnens, Xplanation Tel +32 16 397.525
Interleuvenlaan 86, B-3001 Leuven, BELGIUM Fax +32 16 397.552
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