On 01/03/13 08:10, Mark Campbell wrote:
>
> So I'm trying to get a BackupPC pool synced on a daily basis from a
> 1TB MD RAID1 array to an external Fireproof drive (with plans to also
> sync to a remote server at our collo). I found the script
> BackupPC_CopyPcPool.pl by Jeffrey, but the syntax and the few examples
> I've seen online have indicated to me that this isn't quite what I'm
> looking for, since it appears to output it to a different layout. I
> initially tried the rsync method with -H, but my server would end up
> choking at 350GB. Any suggestions on how to do this?
>
>
The best option I've found if using an external drive of equal size to
the pool is to use Linux md RAID1, and use the --write-mostly on the
external drive. Make sure you enable bitmaps on the RAID1 array, and
after you rotate drives, you may not need to resync the entire content.
For offsite, you can use something like linux md raid1 over the top of
NBD, ENBD (or whatever it is called) or DRBD, etc... However, this
really depends on the speed of your remote connection, reliability, and
will most likely degrade performance significantly.
There have been plenty of discussions on this topic on the list over the
years, try to find it, as there are lots of options which work for
different people, and plenty of pros/cons for each method which has
already been discussed.
Regards,
Adam
--
Adam Goryachev
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