If your users must be able to access remote desktops at all times, you must maintain a certain number of machines that stay provisioned and ready to accept connection requests from your users even when View Composer maintenance operations take place. You can set a minimum number of provisioned, ready machines while View Composer refreshes, recomposes, or rebalances the linked-clone virtual machines in a pool.
When you specify a Minimum number of ready (provisioned) machines during View Composer maintenance operations, View ensures that the specified number of machines stays provisioned and ready while View Composer proceeds through the operation. You can specify the minimum number of ready machines when you create or edit a linked-clone pool.
The following guidelines apply to this setting:
If you use a naming pattern to provision machines and provision machines on demand, set the number of ready machines during View Composer operations to a smaller value than the specified Max number of machines. If the maximum number were smaller, your pool could end up with fewer total machines than the minimum number you want to keep provisioned and ready during View Composer operations. In this case, View Composer maintenance operations could not take place.
If you provision machines by manually specifying a list of machine names, do not reduce the total pool size (by removing machine names) to a lower number than the minimum number of ready machines. In this case, View Composer maintenance operations could not take place.
If you set a large minimum number of ready machines in relation to the pool size, View Composer maintenance operations might take longer to complete. While View maintains the minimum number of ready machines during a maintenance operation, the operation might not reach the concurrency limit that is specified in the Max concurrent View Composer maintenance operations setting.
For example, if a pool contains 20 machines and the minimum number of ready machines is 15, View Composer can operate on at most five machines at a time. If the concurrency limit for View Composer maintenance operations is 12, the concurrency limit is never reached.
The term "ready" applies to the state of the linked-clone virtual machine, not the machine status that is displayed in View Administrator. A virtual machine is ready when it is provisioned and ready to be powered on. The machine status reflects the View-managed condition of the machine. For example, a machine can have a status of Connected, Disconnected, Agent Unreachable, Deleting, and so on.