Hi Allessandro, To achieve this you would probably have to:
- Set global setting “host.capacityType.to.order.clusters” to RAM (default is CPU) - Set *cluster setting* “cluster.memory.allocated.capacity.disablethreshold” to 0.90. - You may also want to review cluster settings cluster.cpu.allocated.capacity.disablethreshold, cluster.cpu.allocated.capacity.notificationthreshold and cluster.memory.allocated.capacity.notificationthreshold. Hope this helps. Regards, Dag Sonstebo Cloud Architect ShapeBlue On 18/01/2017, 11:24, "Alessandro Caviglione" <c.alessan...@gmail.com> wrote: Hi guys, just a question about host allocation. My infrastructure is based on CS 4.5 and XS 6.5, host allocation is "random" but I see that CS allocate hosts to completely fill the RAM. I've some hosts with 148 GB RAM usable and 148 GB used, completely filled. This obviously means that XS will swap to HD and instances performance is reduced... How can I tell to CS to allocate the hosts up to 90% its RAM? Thank you! dag.sonst...@shapeblue.com www.shapeblue.com 53 Chandos Place, Covent Garden, London WC2N 4HSUK @shapeblue