Integrated RAID Controller in SAS Switch Module
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Solution Overview
Problem
In BladeCenter systems, the transition to internal storage requires efficient use of blade slots, as external RAID controllers occupy valuable space and add cost, while integrating RAID controllers within storage enclosures is not feasible.
Innovation Solution
Integrating a redundant array of independent disks (RAID) controller within a switch module in a blade server system, eliminating the need for a standalone RAID controller and reducing the volume required for storage blades by providing direct connectivity to storage enclosures through internal fabrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standalone RAID controller is used in blade slots, then storage connectivity is provided, but valuable blade slot space is occupied and system cost increases
Solution Approach 1:
The patent combines the RAID controller functionality with the switch module by integrating the RAID controller circuitry directly into the switch module housing. This merging eliminates the need for separate standalone RAID controllers in blade slots, as the switch module itself performs both switching and RAID control functions, thereby reducing overall system complexity while maintaining storage connectivity.
Solution Approach 2:
The switch module is designed to perform multiple functions: it serves as both a network switching device and a RAID controller. The integrated RAID controller within the switch module can manage storage arrays and provide connectivity to storage devices, making the switch module a universal component that replaces what would traditionally require separate dedicated devices.
2Reliability
If a standalone RAID controller is installed, then storage access is enabled, but system cost increases
Solution Approach 1:
By merging the RAID controller functionality into the switch module, the patent eliminates the need for separate RAID controller hardware and licensing costs. The integrated solution reduces component count and assembly complexity, thereby reducing manufacturing costs while maintaining full storage access capabilities.
Solution Approach 2:
The multi-functional switch module that incorporates RAID controller capabilities reduces overall system cost by consolidating what would traditionally require separate dedicated devices. This universal component approach reduces both hardware costs and system complexity.
3Quantity of substance
If storage blades are designed with integrated RAID controllers, then storage capacity can be increased, but blade slot volume requirements increase
Solution Approach 1:
The patent merges the RAID controller into the switch module, which eliminates the need for separate RAID controller blades or slots. This integration allows storage capacity to be increased without requiring additional blade slot volume, as the RAID functionality is already embedded in the existing switch module infrastructure.
Data Source
AI summary
A blade server system includes a plurality of blade slots, a management module, and a plurality of switch modules. The switch modules provide connectivity to a plurality of communications fabrics. At least one switch module includes an integrated redundant array of independent disks (RAID) controller. A storage enclosure may be connected to the switch with the integrated RAID controller without having to include a stand-alone RAID controller, such as in one of the blade slots, and without having to include a RAID controller within the storage enclosure.