US Patent 11467923 Application recovery using pooled resources

In a first virtual storage device managed by a helper virtual machine, first data of a first application is stored, the first application executing on a first system, the helper virtual machine executing on a recovery system. Responsive to determining that a duplicate of the first application should be activated on the recovery system, a compute instance is spawned in a hypervisor executing on the recovery system. In the compute instance, a duplicate of the first application is provisioned. The first data is reassociated from the helper virtual machine to the provisioned duplicate application. The duplicate application is activated, the activating causing the duplicate application to execute on the second system using the first data.