VM Migration Storage Hierarchization Control via Intermediary
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Solution Overview
Problem
In computer systems with virtualization technology, storage hierarchization control can be disrupted when virtual machines (VMs) are migrated between multiple computers, leading to potential data management issues and quality deterioration.
Innovation Solution
A computer system architecture that maintains storage hierarchization control by ensuring that VM migration between storage systems involves storing data in hierarchized storage areas, using a network to connect multiple storage systems, and employing a storage control program to manage data migration between direct-attached and external storage apparatuses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If VM migration is implemented between multiple computers, then system maintenance and load balancing are improved, but storage hierarchization control uniformity deteriorates
Solution Approach 1:
The patent introduces a storage system as an intermediary component that manages data storage independently from VM migration. The storage system receives data from VMs regardless of which computer the VM is currently located on, maintaining uniform storage hierarchization control across the distributed environment. This mediator approach allows VM migration for maintenance and load balancing while preserving consistent storage management policies.
2Adaptability or versatility
If VM is migrated between storage systems, then system flexibility is improved, but data access performance may deteriorate
Solution Approach 1:
The patent implements preliminary data copying before VM migration. When a VM is scheduled for migration, its data is pre-copied to the destination storage system in advance. This preliminary action ensures that when the VM actually migrates, it can immediately access its data from the new location without performance degradation, maintaining both system flexibility and data access speed.
Data Source
AI summary
A computer system with a plurality of storage systems connected to each other via a network, each storage system including a virtual machine whose data is stored in hierarchized storage areas. When a virtual machine of a first storage system is migrated from the first storage system to a second storage system, the second storage system stores data of the virtual machine of the first storage system as well as data of its own virtual machine, in the hierarchized storage areas in the second storage system.