Tino Schwarze wrote:
> On Wed, Feb 11, 2009 at 03:33:05AM -0600, mortonda AT dgrmm DOT net wrote:
>  
>>> 1) AoE (ATA over Ethernet) - you could add a drive to your BackupPC
>>> 2) (Soft?)RAID1 with at least 3 drives. I've used this and I'm currently
>> 1 + 2 = 4)  RAID over the network.  See http://www.drbd.org/
> 
> Has anybody tested this in production? I wouldn't add some network
> latency to the filesystem BackupPC is running on since it's VERY I/O
> intensive. I've never used/tested DRDB though, just saw it on a
> customer's server where speed isn't main priority.
> 
> Would you run a database on DRDB?

DRDB's main use is for hot-backup failover servers, so yes, people do 
run databases and disk intensive things over it but normally in 
close-coupled, high bandwidth situation.  I don't know if it is usable 
over slower connections for a remote copy or if it has a re-sync mode to 
swap external drives.

On thing I think looks promising but haven't had time to test is 
opensolaris's zfs filesystem which has a dump-like send/receive function 
with an incremental mode based on snapshots.  Unfortunately I don't 
think it has SATA drivers for the particular machine where I'd want to 
use it.

-- 
   Les Mikesell
    lesmikesell AT gmail DOT com


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