PCI Link Hot Backup Switching for NVMe Connection Modes
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Solution Overview
Problem
Existing server configurations do not support dynamic switching between different hot backup functions for NVMe hard disk drives based on connection modes, limiting flexibility and reliability in data center operations.
Innovation Solution
A method and apparatus that determine the connection mode for a PCI link to a hard disk drive based on bandwidth splitting conditions, setting corresponding hot backup parameters in the Advanced Configuration and Power Management Interface protocol to enable dynamic hot backup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the PCI link is configured to support hot backup function for direct connection to NVMe hard disk drive, then direct connection hot backup is enabled, but connection through switching device is not supported
Solution Approach 1:
The patent implements dynamic switching of hot backup functions based on connection mode detection. The system automatically adjusts the hot backup configuration between direct connection mode and switching device connection mode by detecting the actual connection topology, eliminating the need for manual configuration and enabling flexible adaptation to different scenarios
Solution Approach 2:
The patent changes the ACPI protocol parameters dynamically based on the detected connection mode. When direct connection is detected, one set of hot backup parameters is applied; when switching device connection is detected, another set of parameters is applied. This parameter switching enables the same PCI link to support different hot backup functions
2Reliability
If the PCI link is configured for direct connection hot backup, then direct connection reliability is improved, but flexibility to use switching device connection is lost
Solution Approach 1:
The system dynamically adapts the hot backup function based on the actual connection mode detected during runtime. By implementing automatic detection and switching mechanisms, the system ensures reliable hot backup operation whether connected directly or through switching devices, while maintaining flexibility to support both connection types on the same PCI link
3Ease of operation
If each PCI link supports only one kind of hot backup function in BIOS mirror image, then configuration simplicity is maintained, but user customization capability is limited
Solution Approach 1:
The patent implements dynamic configuration of hot backup functions based on detected connection modes. The system automatically determines the appropriate hot backup function to enable based on whether the connection is direct or through switching devices, providing user customization capability without requiring manual configuration complexity
Solution Approach 2:
The system performs self-configuration by automatically detecting the connection mode and enabling the appropriate hot backup function without user intervention. This self-service approach maintains configuration simplicity while providing adaptability to different connection scenarios
Data Source
AI summary
A dynamic hot backup method, apparatus and device of a server, and a storage medium. Connection modes for connecting a Peripheral Component Interconnect (PCI) link to a hard disk drive is determined by acquiring a bandwidth splitting condition of the PCI link of a device, and hot backup parameters in an advanced configuration and power management interface protocol are correspondingly set according to the connection modes.