Two-Headed Switch for NVMe Over Fabric
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Solution Overview
Problem
Standard network switches lack spatial efficiency and are costly due to the need for a larger chassis and additional power supplies when supporting NVMe over fabric devices, as they require bulky internal connectors and cables that hinder high-speed connectivity and increase power consumption.
Innovation Solution
A two-headed switch design with downlink switch ports embedded in a drive bay on one side of the chassis and uplink switch ports on the opposite side, eliminating internal connectors and cables, and sharing power and cooling resources, allowing for a smaller footprint and reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If standard external switches are used to support NVMe over fabric devices, then connectivity is provided, but rack space is increased and power consumption is increased due to additional power supplies
Solution Approach 1:
The patent combines the external switch functionality with the drive bay chassis into a single integrated unit. The switch controller is embedded within the chassis that already houses the drive bay, eliminating the need for separate external switch equipment. This merging reduces the total rack space occupied while maintaining full NVMe over fabric connectivity capabilities.
Solution Approach 2:
The integrated chassis serves multiple functions: it houses the drive bay for storage devices, contains the switch controller for NVMe over fabric connectivity, and provides a unified power supply that serves both functions. This multi-functionality eliminates the need for separate dedicated power supplies for each component, reducing overall power consumption and rack footprint.
2Adaptability or versatility
If standard external switches are used to support NVMe over fabric devices, then connectivity is provided, but device complexity and cost increase due to additional power supplies and internal connectors
Solution Approach 1:
The patent merges the switch controller directly into the drive bay chassis, creating a single integrated system. This eliminates the complexity of managing separate external switch equipment, multiple power supplies, and extensive internal cabling. The unified design reduces system complexity while maintaining full NVMe over fabric connectivity.
3Adaptability or versatility
If bulky internal connectors and cables are used in standard switches, then connectivity is achieved, but signal integrity deteriorates and high-speed connectivity is hindered
Solution Approach 1:
The patent extracts and eliminates the bulky internal connectors and cables from the system by integrating the switch controller directly into the chassis. This removal of intermediate connection components reduces signal degradation and maintains signal integrity for high-speed NVMe over fabric connectivity.
Data Source
AI summary
A switch includes a chassis, a drive bay including a plurality of downlink switch ports that are configured to be connected to a plurality of storage devices, a plurality of uplink switch ports, and an embedded circuit for providing signal switching between the plurality of uplink switch ports and the plurality of downlink switch ports. The drive bay is disposed on a first side of the chassis, and the plurality of uplink switch ports are disposed on a second side of the chassis that is opposite to the first side of the chassis. The plurality of downlink switch ports is embedded in the drive bay.