Home > Storage > PowerStore > Virtualization and Cloud > PowerStore: 1,500 VMware Horizon VDI users > Secondary pools
One simple way to help users quickly return to work is to keep additional VMs ready in a recovery pool. This pool can be assigned to end users if the primary systems are down. This pool may not have the same performance characteristics but can aid in business continuity. Because of the rapid deployment nature of virtual clone VMs, it is also possible to have the VMs created on demand in a failover scenario. This strategy reduces the storage requirement. Since only one environment would be generating load, the IOPS requirement would be the same once all the users are logged in. The load would be higher during virtual machine creation.