iSCSI Diskless Boot for Server OS Deployment
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Solution Overview
Problem
Conventional server systems face challenges in providing a faster, more cost-efficient, and reliable method for remotely deploying software, particularly in modern datacenters that rely on Pre-boot Execution Environment (PXE) which is not efficient for large-scale server farms.
Innovation Solution
The implementation of Internet Small Computer System Interface (iSCSI) based protocols for bare metal OS image deployment and diskless boot in server systems, where the BIOS boot order is set to an iSCSI NIC, and the iSCSI boot configuration is synced with the controller to boot from a specific target IP and LUN of an iSCSI storage server, enabling remote configuration and booting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PXE is used for remotely booting or deploying software onto servers, then remote configuration capability is provided, but deployment speed and efficiency are insufficient for large-scale server farms
Solution Approach 1:
The patent replaces the traditional PXE network-based boot mechanism with an iSCSI storage-based boot mechanism. Instead of loading boot images over the network using PXE, the system uses iSCSI to directly access boot images stored on remote storage devices, substituting a network protocol with a storage protocol that offers faster and more reliable access for server deployment
Solution Approach 2:
The patent introduces an iSCSI initiator as an intermediary component that enables servers to access boot images stored on remote iSCSI storage devices. This intermediary facilitates direct storage access during the boot process, bypassing the limitations of PXE while maintaining remote deployment capability
2Ease of operation
If PXE code is delivered on ROM chip or boot disk, then remote booting is enabled, but cost and complexity increase for large-scale deployments
Solution Approach 1:
The patent makes the iSCSI storage system universal by enabling it to serve multiple functions: storing boot images, providing remote access capability, and supporting multiple servers simultaneously. This eliminates the need for separate PXE infrastructure and reduces overall system complexity while maintaining ease of remote operation
Solution Approach 2:
The patent uses copying by storing identical boot images on remote iSCSI storage devices that can be accessed by multiple servers. Instead of each server needing its own boot disk or ROM, the system copies the boot image from a central storage location to multiple servers during the boot process, reducing complexity and improving ease of deployment
Data Source
AI summary
Various examples of the present technology provide a method for iSCSI based bare metal OS image deployment and diskless boot in a server system. In some examples, methods for iSCSI based bare metal OS image deployment and diskless boot in a server system comprise setting a boot order of a BIOS of the server system to iSCSI NIC of a controller (e.g., BMC) of the server system, setting iSCSI boot configuration to the controller, updating the boot order based at least upon information from the controller, syncing the iSCSI boot configuration to the BIOS of the server system based upon the information from the controller, and causing the server system to be booted from a specific target IP and LUN of an iSCSI storage server of a SAN.