Re: Active/Active servers

[Buchan Milne <bgmilne@staff.telkomsa.net>]

On Thursday 06 December 2007 13:46:28 Taymour A. El Erian wrote:
> Hi,
>
>     I am not sure if this is the right place to ask this or not. If I
> install 2 nodes of OpenLDAP and they both share the same SAN storage, is
> it possible that both of them would be working active/active ?, i.e.
> behind a load balancer (doing reads and writes).

Sharing the same storage is typically what one would do with an Active/Passive 
HA cluster, using a cluster middleware to avoid both nodes accessing the 
storage simultaneously (and moving the resource IP etc. with it).

The only real way to do active/active for writes is multimaster replication in 
2.4. But, do note that all it buys you is a cheaper solution (e.g., no SAN 
required), not a faster one.

Regards,
Buchan