--On Tuesday, April 23, 2002 19:23:50 +0100 Niall O Broin <[EMAIL PROTECTED]>
wrote:
> On Tue, Apr 23, 2002 at 12:23:19PM -0400, Jon LaBadie wrote:
>
>> > > Or leave the tape out of the drive and let it go to to the holding disk,
>> > > then amflush whenever you have a full tapes worth.
>> >
>> > Will that work ? When I use amflush I get given a list of days on which
>> > amdump ran without a tpe for whatever reason. Then I must choose one of
>> > those days and that set of backups is flushed to the tape. To get two or
>> > more days onto one tape Amanda would have to support append :-)
>> >
>>
>> You are also given the choice of "ALL".
>
> For some reason, I thought that if I picked ALL it would do the flush one
> day at a time, asking for a different tape each time. If instead it flushes
> ALL onto one tape then that does effectively give you a way of maximising
> tape usage, if you're that concerned. However, you'd need to be rather
> careful that you didn't end up with too much data held.
ALL will try to move every dump on the holding disk to the same tape.
Amanda only removes files from the holding disk that have been written
successfully to tape, so if it hits EOT during an amflush, the failed
dump will still be in the holding disk so you can change tapes and run
amflush again or wait for more to accumulate.
If your holding disk is RAIDed in a way to provide redundancy, it
should be fairly safe to leave some data there, since you would have
to have both a RAID failure and lose the original file at the same
time. Personally I wouldn't do it as a general practice, but it is
a nice feature to have if you need it (like waiting for a failed drive
to be replaced).
Frank
--
Frank Smith [EMAIL PROTECTED]
Systems Administrator Voice: 512-374-4673
Hoover's Online Fax: 512-374-4501
