Well i figured it's time to Upgrade our Hosting Platform. But i'm not sure what route i should take. I figured it will turn into a nightmare if i don't cover all my bases, so it's probably best to ask what others think would be the best way to move forward. Below is the Break down of what i have. I need to get this thing updated to the latest accross the board. Below is my system breakdown Running HSPC/VZ Manager/Plesk Manager Servers Total- 3 Server #1 HSPC Management HW Node with 3 VPS's BaseOS - FC2 Kernel 2.4.20-021stab028.19.777-enterprise i686 2-VPS Name Server's 1-VPS HSPC 3.2.2-56.09 Server #2 Virtuozzo HW Node-FC2 (kernel 2.4.20-021stab028.19.777-enter 4- VPS's running FC2.p1 Server #3 Plesk Node- CentOS 4.2(kernel 2.6.8-022stab070.1-smp) 3- Plesk VPS's running Plesk 7 Unix FC2 7.5.4 On the Plesk VPS's i have about 20 clients between the three of them and on the VZ i have 4 hosted VPS's .I want to keep the downtime to a minimum and i want to update all 3 servers to CentOS 4.5 " Since CentOS 5 is way to buggy from what i've been told" and the Latest VZ templates and Plesk 8.2.1 . If anyone could help me out and give me some ideas on how i should get this done or issues i could run into that would be great. I'm not a pro at linux and don't want to hose the system without covering my *** to do this. So again any tips or recommendations would be great and appreiciated.