Dynamic Virtual Disk Stripe Size Adjustment via Metadata Reprogramming

The patent applies the dynamics principle by enabling the stripe element size to change from a fixed initialization parameter to a dynamically adjustable parameter. The storage controller can modify the logical stripe size information in the virtual disk metadata during operation, allowing the system to adapt to different application performance requirements without reinitializing the virtual disk or altering the underlying physical RAID configuration.

The patent applies the parameter changes principle by modifying the logical stripe size parameter stored in the virtual disk metadata. The storage controller reads the current stripe element size from the metadata, calculates the appropriate mapping between logical and physical stripe sizes, and updates the metadata with the new stripe element size. This allows performance optimization through parameter adjustment without requiring complex hardware reconfiguration.

The patent applies the intermediary principle by introducing the virtual disk metadata as a mediator between the physical RAID configuration and the application's performance requirements. The storage controller maintains the stable physical RAID configuration unchanged while using the virtual disk metadata to store and manage the logical stripe size information. This intermediary layer allows performance optimization at the virtual level without affecting the stability and data integrity of the underlying physical storage system.