Symmetrix OPTIMIZER improves array performance by continuously monitoring access patterns and migrating devices (Symmetrix logical volumes) to achieve balance across the disks in the array. 

Step 1: Symmetrix Optimizer builds a database of device activity statistics on the Symmetrix back-end. 

Step 2: Using the statistical data collected, configuration information, and the user-defined parameters, the Optimizer algorithm identifies busy and idle devices and their locations on the physical drives. The algorithm tries to minimize average disk service time by balancing I/O activity across physical disks. Optimizer determines which disks require balancing by locating busy devices close to each other on the same disk, and/or by locating busy devices on faster disks or faster areas of the disks. Optimizer takes into account the speed of the disk, the disk geometry, and the actuator speed to DETERMINE faster disks. 

Step 3: Once a solution for load balancing has been developed, the next phase is to carry out the Symmetrix device swaps. This is done using established Time Finder TECHNOLOGY, which maintains data PROTECTION and availability. We can specify whether swaps should occur in a completely automated fashion, or if the device swaps require user approval before the action is taken. 

Step 4: Once a SWAP function completes, Symmetrix Optimizer continues data analysis for the next swap.

Symmetrix Optimizer improves array performance by continuously monitoring access patterns and migrating devices (Symmetrix logical volumes) to achieve balance across the disks in the array. 

Step 1: Symmetrix Optimizer builds a database of device activity statistics on the Symmetrix back-end. 

Step 2: Using the statistical data collected, configuration information, and the user-defined parameters, the Optimizer algorithm identifies busy and idle devices and their locations on the physical drives. The algorithm tries to minimize average disk service time by balancing I/O activity across physical disks. Optimizer determines which disks require balancing by locating busy devices close to each other on the same disk, and/or by locating busy devices on faster disks or faster areas of the disks. Optimizer takes into account the speed of the disk, the disk geometry, and the actuator speed to determine faster disks. 

Step 3: Once a solution for load balancing has been developed, the next phase is to carry out the Symmetrix device swaps. This is done using established Time Finder technology, which maintains data protection and availability. We can specify whether swaps should occur in a completely automated fashion, or if the device swaps require user approval before the action is taken. 

Step 4: Once a swap function completes, Symmetrix Optimizer continues data analysis for the next swap.