host extensions for rational requirements manager

The following memory options can be used in VMware Server: For example, VMware has listed the numbers in Table 6.2 as the typical amount of overhead needed for various virtual machine memory allocations for the GSX server. The VM overhead varies based on disk size and memory allocated. However, if the entire RAM is in use by the VMs, the host OS itself or any other application can use it. Although the amount of host RAM that VMware Server uses can be reserved, the memory is not allocated in advance and any unused RAM is available for use by other applications if the VMs are not using it. The reserved amount depends on the host OS and the amount of memory in the host computer. As a general rule, the total memory of all the running virtual machines added to the overhead for the VMware Server processes cannot be greater than the amount of physical memory on the host excluding additional memory reserved for the host to operate properly while virtual machines are running. Using VMware Server as an example, it limits the total amount of RAM that can used by virtual machines so that virtual machines do not use too much memory and cause the host to thrash. Changes to memory settings affect the virtual machines and system performance. In addition, the extent to which the host OSes allows the memory manager to swap virtual machines out of physical random access memory (RAM) can be set. Limits on the amount of host computer memory available for use can also be set for each virtual machine and the amount of the host computer's memory that can be used for virtual machines. When a virtual machine is created, memory is allocated to that virtual machine. Memory analysis is one of the main components of a live investigation.

Host extensions for rational requirements manager