In article <[🔎] 91c03aaa0805070225n60b82156x2c0f6f540f8c89d5@mail.gmail.com> you wrote: > system, this system Will be running in a data center and i don't want to > have downtime ! > > Hardware i use = > > server 1 x86 (hp ML330) > server 2 IA64bit (HP rx1620) The first thing you need to do is to limit yourself to a single platform. This helps with patches, images, hardware replacements and will greatly affect your downtimes. Gruss Bernd