Compute Instance Migration with Parallel Copying
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Solution Overview
Problem
Customers using legacy compute instances are hesitant to migrate to newer types due to concerns about downtime and potential service disruptions during the transition process, which can be time-consuming and inefficient.
Innovation Solution
A compute instance migration system that allows customers to switch from one compute instance type to another while minimizing downtime and ensuring a seamless user experience, by copying data from local to remote block-based storage and converting server images as needed, thereby enabling the use of more powerful or efficient compute resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If customers migrate from legacy compute instances to newer types, then computing efficiency and cost savings are improved, but downtime and service disruption increase
Solution Approach 1:
The system performs preliminary actions by creating a copy of the legacy compute instance and migrating it to the new compute instance type before the original instance is decommissioned. This includes copying block-based storage resources and converting server images in advance, ensuring the new instance is ready and tested before switching over, thereby minimizing service disruption and downtime.
2Loss of energy
If compute instances are migrated to newer types, then cost efficiency is improved, but migration time and complexity increase
Solution Approach 1:
The system creates a copy of the legacy compute instance and migrates it to the new compute instance type. This copying approach allows parallel operation of old and new instances, enabling validation and testing before full migration, thereby reducing overall migration time and complexity while ensuring cost efficiency through newer, more efficient hardware.
3Power
If compute instances are migrated to newer types, then computing performance is improved, but service disruption increases
Solution Approach 1:
The system performs preliminary actions by creating and configuring the new compute instance with copied storage resources and converted server images before decommissioning the legacy instance. This allows validation of the new instance's performance and functionality, ensuring computing performance improvement while minimizing service disruption through a controlled transition.
4Ease of operation
If migration process is simplified, then ease of operation is improved, but migration completeness may be compromised
Solution Approach 1:
The system copies block-based storage resources and converts server images during the migration process, ensuring data integrity and completeness. This automated copying approach simplifies the migration operation for customers while maintaining migration completeness through systematic resource replication and validation.
Data Source
AI summary
A system comprising a computing node comprising a processor and a non-transitory memory and an application stored in the non-transitory memory. When executed by the processor, the application causes the processor to receive an input requesting that a first compute instance of a first compute instance type be instantiated as a second compute instance of a second compute instance type, where a mix of compute resources associated with the second compute instance type is different from a mix of compute resources associated with the first compute instance type; create the second compute instance of the second compute instance type based on the first compute instance; deactivate the first compute instance; and instantiate the second compute instance.