Server Release on Power Off
The function to release servers when they are powered off is a function used for switching over operating L-Servers after preparing L-Servers with more CPUs and memory resources than can be used on the VM host.
This function enables the use of CPUs and memory resources allocated to a single L-Server on other L-Servers, by switching over L-Servers to start/stop according to the time or their status.
When an L-Server is powered off, the amount of resources that are already allocated to a powered on L-Server can be confirmed, as the CPU and memory already allocated to an L-Server are not calculated in the usage amount of the VM pool.
To prepare for resource insufficiency on the VM host on which an L-Server is deployed, configuring [Relocate at startup] in the [Boot Location] means that when the L-Server is started, a search is performed for VM hosts with sufficient CPU and memory resources, and the L-Server is started after it is moved to an appropriate VM host.
When there are no other VM hosts with sufficient CPUs and memory resources, the L-Server is started on the VM host on which it is currently deployed.
When [Boot Location] is [Fixed], and the amount of resources allocated to the L-Server powered on are overcommitted on the VM host, as CPUs and memory resources on the VM host are shared among multiple L-Servers, check the effect on other L-Servers and then start the L-Server.
When starting L-Servers requiring more than the number of physical resources on the VM host, it is recommended to select "false" for [Resource release] in the following environments, as L-Servers operate sharing resources among multiple L-Servers.
When not using overcommit
When using virtualization software for which overcommit is not recommended
