AW: Offtopic DRBD

Hi Robert,

> Is it stable enough for pruductive usage?

There are kernel/drbd kombinations that work reliably enough to be used in production systems, I've got ~ 10 clusters using drbd in production use. no problem/dataloss so far and quite a few successfull failovers (both scheduled and real errors) so far.

> Is it able to integrate in a kernel 2.4?

Yes, 2.4 is the prefered kernel series for drbd. Personaly I'm using 2.4.18 + drbd-0.6.1-pre10 on most systems, only caveat with this combination is that the kernel must be compiled with HIGHMEM support turned off. Later versions (pre12, current CVS) don't have this restriction any longer but I haven't yet found time to switch.

> The performance won't be critical i think, 
> we could use a Gigabit crosslink calbe.

This will help you as far as normal use of the drbd device is concerned, i.e replication of writes. it won't help for initial synchronisation (drbd SyncAll or SyncQuick state): there's a limit of about 5-6MB/s for the replication regardless of wire speed.


Bye, Martin