[gentoo-user] [OT] RAID 1 over network

[Renat Golubchyk <ragermany@gmx.net>]

Hi all!

Short:
What is the best way to setup something similar to RAID 1 over a WAN?

Background:
Two LAMP servers are located in geographically different locations
connected through a load balancer to the net:

  LAMP A--------LAMP B
      \           / 
       \         / 
        \       / 
         \     / 
          \   / 
           \ / 
            V 
     load balancer LB
            | 
            |
           WAN

One purpose of the setup is to have data redundancy. Thus we have to
ensure that the data is replicated in a timely manner. Replicating MySQL
data is not difficult. The problem is the file system data like uploaded
documents and pictures. We can monitor changes in the file system and
initiate rsync to copy files over the network, but I think it's not a
good solution. What we are after is a network equivalent of RAID 1.
Are there any viable solutions that could work over a WAN?


Cheers,
Renat

--
Probleme kann man niemals mit derselben Denkweise loesen,
durch die sie entstanden sind.
                                              (Einstein)