[Linux-cluster] GNBD vs DRBD to mirror two disks via the network

[Bushby, Bruce (London)(c)]

Greetings!
 
I'm hoping a member could assist me in clearing up some understanding I
appear to be missing when it comes to GNBD.
 
Today I clustered two vmware machines (active/passive shared nothing)
and then configure GNBD....thats when I noticed it
wants to "export" a device from one node and "import" the device on the
other node...which I did and it all works....but that is
not what I was after.
 
Can GNBD be configured to keep two disks on different systems in sync
using both synchronous and asynchronous write options?
 
Further research appears to dictate DRDB would be more suited for what
I'm trying to do. (build active/passive clusters on cheap
storage..ie no SAN to replicate and no scsi to share)
 
Any help much appreciated!!!!
 
 
Bruce Bushby
Unix Engineering
 

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