Virtual machine flavors: Difference between revisions

A virtual machine of "p" flavor is intended to run for an indeterminate length of time. There is no predefined root disk. The intended use of "p" flavors is that they should be [[OpenStack#Booting_From_a_Volume|booted from a volume]], in which case the instance will be backed by the Ceph storage system and have greater redundancy and resistance to failure than a "c" instance. We recommend using a volume size of at least 20GB for the persistent VM root disk. The Arbutus cloud treats “p” flavors differently as they will be on compute nodes with a higher level of redundancy (disk and network) and do over-commit the CPU so are geared towards web servers, data base servers and instances that have a lower CPU or bursty CPU usage profile in general.