[Gluster-devel] clarification regarding the "2 mirrored servers" example on the wiki

[Daniel Maher]

On Thu, 20 Mar 2008 20:11:16 +0530 "Krishna Srinivas"
<krishna at zresearch.com> wrote:

> It can suggest option "a" if the glusterfs client is run either on
> storage1.example.com or storage2.example.com
> 
> It can suggest option "b" if the glusterfs client is run on a
> different machine.
> 
> How you interpret that example depends on where you run the client.

Thank you for the prompt response, Krishna.

Suppose i have four webservers and two back-end storage servers.  I
would like to have both of storage servers be mirrors of each other,
and in turn, i would like to have the webservers be able to interact
with the storage "cluster" (such as it is) in a read/write capacity.

Using Gluster, would the proper approach here be to set up both of the
storage servers as gluster servers / clients of each other (option "a"),
then export the mirror as a volume to my webservers (running the client
only) ?  In this fashion i would hope to achieve a position whereby one
of the storage servers could suddenly burn to the ground, but
operations would not be affected, since the volume remains accessible.

As per the "simple high availability storage" wiki page, this would
seem to be the case - but i'm more than happy to hear any other
thoughts on the matter.

Thank you all.



-- 
Daniel Maher <dma AT witbe.net>