High Availability
We are in the initial planning stage for a high-availability (HA) Linux server cluster which will offer e-mail services (SMTP and IMAP) for about five hundred users. To this effect, we will probably be using DRBD in a "shared nothing" configuration.
DRBD is a block device which is designed to build high availability clusters. This is done by mirroring a whole block device via (a dedicated) network.
Initial tests with a 400 GB disk slice look very promising indeed!
Jan-Piet Mens » Blog Archive » Payback for Open Source wrote on 14-Nov-05 at 3:47 pm
[...] It pleases me all the more, that I've been able to get the company to purchase a three month support contract from Linbit, for our mail server project with DRBD. Although I don't think we'll be requiring it, the support contract is my way of saying thank you to the Open Source community. [...]