The reserved memory setting specifies the maximum amount of host RAM that Workstation Pro is allowed to reserve for all running virtual machines. Reserved memory is not allocated in advance.

To configure the reserved memory setting, select Edit > Preferences > Memory and move the Reserved memory slider to select the reserved memory amount.

If you set the reserved memory value too high, the CPU might thrash if you run other applications on the host. If you set the value too low, virtual machines might perform poorly, and you cannot run as many virtual machines at the same time.

The maximum amount of memory for each virtual machine is 64GB.

The total amount of memory that you can assign to all virtual machines running on a single host system is limited only by the amount of RAM on the host system.