On 08.07.2015 19:48, Jeff Boyce wrote:
> * The best methods for this boil down to two camps:
>          1) Run two BackupPC servers and have both back up the hosts
> directly
>                  No replication at all:  it just works.
>          2) Use some sort of block-based method of replicating the data
> 
> * Block-based replication boils down to two methods
>          1) Use md or dm to create a RAID-1 array and rotate members of
> this array in and out
>          2) Use LVM to create snapshots of partitions and dd the partition
> to a different drive
>          (I guess 3) Stop BackupPC long enough to do a dd of the partition
> *without* lVM)

Personally I use option 1, but if I were to implement it today, and
bandwith was of issue. I would look into using btrfs / zfsonlinux and
send / receive.

-kp

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