On Nov 1, 6:32am, Ping Wei wrote:
> Hi,
>
> I have a question for Andy or people with similar configuration. We
currently
> have 3 database servers all located in the same computer room. Our cell
cross
> couple of buildings. The problem is if the network go down, the users can
not
> use AFS. We are now thinking about distribute the datbase servers out to
> different building. One plan is to move one dabase sever out to another
> building has critical project need AFS access all the time.
>
> building 1 building 2
> ========== ==========
>
> +---------------+
> | |
> 1 DB & file server -----| backbone |------ 2 DB & file servers
> | |
> +---------------+
>
> My question is if the network between building 1 and building 2 goes down
> will the people in building 1 still be able to access files store on the
> file server in building 1? Is there anybody has experienced network going
> down and AFS is still able to work? Will the users in building 1 face the
> quorum problem for 1 is not the majority of 3 and not able to use AFS?
>
> Thanks.
>-- End of excerpt from Ping Wei
Pre 3.4, your building 1 folks are screwed. They lose quorum and the
whole ball of wax. In 3.4 they will get read-only access to the databases
and any volumes on the server they can reach.
If your intra-campus network is that unreliable, AFS's fault tolerance
will not solve your basic problem: if your are losing your interbuilding
links frequently, you need to look at the quality of your network
infrastructure (or the people operating it.)
-Andy
