FUZZY CONTROL BASED VIRTUAL MACHINE AUTO SCALING SYSTEM AND METHOD

PURPOSE: A purge control-based virtual machine scaling system and a method thereof are provided to improve user satisfaction and quickly handle service demands of a user by dynamically increasing requirements of VM(Virtual Machine) instances every time VM instance demands of the user are increased. CONSTITUTION: A monitoring module(202) monitors a state of a VM allocated to a user. A scaling module(204) calculates a work load and the usage of the VM according to VM state information and purges the workload and the usage by using a set position function. The scaling module applies an inference rule to the usage and the workload to calculate purge output and calculates requirements of VM instances of the user. A VM control module(206) controls the number of the VM instances allocated to the user according to the requirements. [Reference numerals] (202) Monitoring module; (204) Scaling module; (206) VM control module