Ocfs2 users - Sep 2009 - broad topic: AoE vs iSCSI vs DRBD with OCFS2

For low-end deployments, a SAN can be replaced with a distributed block 
device, using something like AoE (ATA-over-Ethernet), iSCSI or DRBD.

Is there any document comparing these solutions, used with OCFS2 on top? 
Which one would you prefer with OCFS2? Which one would you avoid? Why?

The context is:
- low-cost deployment (avoiding full-blown SAN)
- OS is Red Hat or a derivative (CentOS, Oracle Enterprise...)

Things that matter, in no particular order:
- stability
- lack of hassles, at installation and later
- performance (as much as possible from such a low-tech setup)

-- 
Florin Andrei

http://florin.myip.org/

I would think ISCSI would be by far the most established of the three.
And I won't be surprised if it wins on all three counts.


Florin Andrei wrote:
> For low-end deployments, a SAN can be replaced with a distributed block 
> device, using something like AoE (ATA-over-Ethernet), iSCSI or DRBD.
>
> Is there any document comparing these solutions, used with OCFS2 on top? 
> Which one would you prefer with OCFS2? Which one would you avoid? Why?
>
> The context is:
> - low-cost deployment (avoiding full-blown SAN)
> - OS is Red Hat or a derivative (CentOS, Oracle Enterprise...)
>
> Things that matter, in no particular order:
> - stability
> - lack of hassles, at installation and later
> - performance (as much as possible from such a low-tech setup)
>