[ale] Fileserver/filesystem replication

[Greg Freemyer]

On Wed, 2003-12-31 at 04:13, Bob Toxen wrote:
> Ya want real-time replication.  I'll give ya real-time replication.
> 
> 1. Build your ext3 or ReiserFS on top of Linux software mirroring.
> 2. Make the second (mirror) disk a network disk device.
> 3. Ensure that writes are not acknowledged until they percolate through
>    to the remote real hard disk.
> 
> Done.
> 

The above definately works, but I know the drbd people think there
method works better.  Both have the same basic goal: Mirroring disks
across a LAN.

www.drbd.org

In reality, I think it comes down to what cluster failover solution you
want to use.  Redhat Advanced Server uses a cluster solution I'm not
familiar with.  With it, Redhat recommends and supports the Raid-1 over
Network Block Device approach.

I think most other distro's (definately SUSE), use the Linux-HA
(heartbeat) cluster solution.  The Linux-HA people prefer the drbd
approach.  I know the SUSE Server Edition supports this approach.

Greg
-- 
Greg Freemyer