Compute vs. Storage and VM
Hi there,
I have a simple question running through my head the last days and have no idea where to find an answer, so I decided to post it here.
I am planning an simple private cloud: - 1 Compute node - 2 Storage nodes with only 1 disk (3 TB) - 1 Controller node - 1 Network switch
In the web I am finding several answers to my two problems, but I dont know, which is right, so here they are:
1) Does the compute node need disks for running instances? Then it would be simple like a Xen-Server, or? And then I would need to give a 32 Core 96 GB machine up to 4 TB x 2 disks with raid to have the ability to run large Instances, or?
2) Do I need (for the start) 2 or 1 Storage nodes? I thought, for security reasons, its better to have 2, if one fails. Is it recommended to have (for the start) more than one disk per node?
Thank you very much! Stephan