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Peer-to-peer storage device messaging over control bus

A peer-to-peer device and control bus technology, applied in static memory, transmission system, response error generation, etc., can solve the problems of internal operation data reset event, debugging data, device log and configuration information loss, etc., to achieve improved functions Effect

Pending Publication Date: 2022-08-05
WESTERN DIGITAL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The storage device may experience errors before establishing a host over the high-bandwidth peripheral bus and / or may experience failures that prevent host communication
As a result, internal operational data such as reset events, debug data, device logs, and configuration information in individual storage devices may be lost, especially in the event of an unrecoverable error that forces a system or storage device reset

Method used

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  • Peer-to-peer storage device messaging over control bus
  • Peer-to-peer storage device messaging over control bus
  • Peer-to-peer storage device messaging over control bus

Examples

Experimental program
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Embodiment Construction

[0025] figure 1 An embodiment of an exemplary data storage system 100 is shown having data storage devices 120 interconnected by both a storage interface bus 108 and a control bus 110 . While some example features are shown, various other features are not shown in the interest of brevity and not to obscure relevant aspects of the example embodiments disclosed herein. To this end, by way of non-limiting example, data storage system 100 includes one or more data storage devices 120 (also sometimes referred to as information storage devices, storage devices, disk drives, or drives). In some embodiments, storage devices 120 may be configured in server or storage array blades or similar storage units used in data center storage racks or cabinets. Storage devices 120 may interact with one or more hosts 102 and provide data storage and retrieval capabilities to or through those host systems. In some embodiments, storage devices 120 may be configured in a storage hierarchy that incl...

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PUM

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Abstract

Systems and methods for peer-to-peer storage device messaging over a control bus to offload and back up internal operational data are disclosed. The storage device may include a host interface configured to connect to a host system and a control bus interface for connecting to a control bus. Peer-to-peer storage devices may establish peer-to-peer communications through the control bus interface, select internal operational data, and send the internal operational data to other peer-to-peer storage devices through the control bus. In response to a recovery event, the peer-to-peer storage device may receive offloaded internal operational data from another peer-to-peer storage device.

Description

technical field [0001] The present disclosure relates generally to computing system devices interconnected over a low bandwidth bus, and more particularly to peer-to-peer device communication over a low bandwidth control bus without host system intervention. Background technique [0002] Some computing systems, such as storage arrays, may include multiple storage devices connected via a peripheral or storage interface bus such as Peripheral Component Interconnect Express (PCIe), Serial Advanced Technology Attachment (SATA), or Serial Attached [ Small Computer Serial Interface (SCSI)] (SAS)) supports one or more host systems. These interfaces can be configured for high bandwidth transfer rates, such as 3 gigabits (Gb) / second(s), 6Gb / s, 8Gb / s, 12Gb / s, 16Gb / s, etc., to / from storage devices Fast and reliable data transfer, some versions support up to 512Gb / s. [0003] Multi-device storage systems utilize multiple discrete storage devices, typically magnetic disk drives (solid ...

Claims

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Application Information

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IPC IPC(8): G06F13/38G06F3/06G06F11/14G11C29/52H04L67/104
CPCG06F3/0688G06F3/0635G06F3/0683G06F3/061G06F11/1451G06F11/1458G06F11/3034G06F3/0659G06F3/0629G06F3/067G06F3/0619G06F3/0653
Inventor E·莫什D·贝勒D·赫尔米克
Owner WESTERN DIGITAL TECH INC