In our case (general purpose VMs) we decided to have the system's RAM as the reference point to create our VM limit. For example, if the server has 128GBs of RAM and the default VM profile is 1 vCPU + 4Gbs RAM, then our upper limit is roughly 30VMs per server.
Over provisioning the CPU is usually not a problem but over provisioning the RAM can be the start of many problems . Kind Regards Stavros ---------------------------- Stavros Konstantaras Science faculty Research IT support (FEIOG) University of Amsterdam, Science Park 904, 1098 XH Fingerprint: E5E5 9B19 D1CD 88CD 4763 3465 A8DC 7C92 330F D59A > On 11 Apr 2016, at 13:09, Erik Weber <terbol...@gmail.com> wrote: > > On Mon, Apr 11, 2016 at 1:02 PM, Mindaugas Milinavičius < > mindau...@clustspace.com> wrote: > >> Hello, >> >> how many VM's do you creating per host? >> What you prefer E5-2650v3 or E5-2630v3 (less power, 2x cheaper CPU, and >> only ±20% less benchmark) >> >> > I'd say it depends on the workload. For generic purpose VMs CPU is usually > not the bottleneck and personally I'd pick the cheaper one. > > You should look into v4 CPUs while at it. > > -- > Erik
