[CentOS] drbd and el6

[John R Pierce]

On 2/26/2013 3:03 PM, Patrick Flaherty wrote:
> That being said, if you have a requirement that your backup solution
> is up five nines, then yeah, use drbd / pacemaker, it's just not a use
> case I see very often.

don't have anywhere near that sort of uptime requirements, but when data 
starts spiralling out into the multi-terabytes with billions of file 
links, rsync is painfully slow.

the use case is more like,  if the primary backup server fails, I'd like 
to have the secondary backup server running within a few hours of 
futzing with the existing backups available for recovery.

maybe I should use backupPC's archiving feature, but if I have to 
restore 20TB or whatever of files and links from an archive, that could 
well take the better part of a week.

the way I figure it, drbd would give me a backup copy of the backup 
system thats ready for near immediate use.    failover would be a manual 
process, but simple and quick (stop drbd, mount the archive, start the 
standby backup PC server)..




-- 
john r pierce                                      37N 122W
somewhere on the middle of the left coast