question about hardware architecture.

[Simon Matter]

> Helo.
>
> I was asked to prepere hardware architecture to Cyrus based
> e-mail system for large number of accounts.
>
> What i want to propose is.
>
> 4 IBM xSeries 346 for mailbox servers.
> EMC CX700 as storeage.
>
> But i dont know how te resolve problem of mountig volumes from EMC.
>
> I want to do this for this way:
>
> Every server in normal way is mounting from EMC one volume on wich are
> binaries and mailboxes for this instance. When this server crash, i
> would like to remount this volume on the one from 3 remaining servers,
> and there run this instance.
>
> On SUN hardware i was using Veritas VM for such cluster operation.
> Now on x86 i've no idea. Veritas is not good for me, because as i know,
> he doesn't work on Debian or FreeBSD systems which i plan to use.
>
> Have you got any idea ? which help me ;-)

Just some ideas:

For Linux there are some cluster FS like
GFS (RedHat, GPL)
GPFS (IBM)
OCFS2 (Oracle, GPL)
Veritas (without support on certain distr.)
CXFS (SGI)
I know there are more, however, I haven't used any of them.

There is also something like drbd, have a look at
http://www.drbd.org/
http://www.linux-ha.org/

Simon