Originally Posted by Jtvd78
So, i see a lot of you are running VMs. Why do you exactly need to have 5 VMs running? And how is the performance of virualizing, like in VMware, compared to just installing the OS directly?
Are you asking me?
A true hypervisor (Xen, ESXi etc.) should have practically equal performance to a bare metal install.
Paravirtualisation (Virtuozzo etc.) will be less due to overheads etc. of the host OS and the fact it doesn't get hardware pass through etc.
We run a ~200 server strong VMWare infrastructure at work...
The reason to run many VM's are:
Segregating work - Bad idea for one server to do too much.
Redundancy - Multiple VM's accross multiple hosts incase one goes down.
Load balancing - Multiple VM's doing the same thing and sharing a heavy load (usually Web/SQL)
For home setups - Trying things in different OS's and experimenting.
Many other reasons too...Edited by dushan24 - 10/28/12 at 7:34pm