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Tempered pacing of shingled magnetic storage devices

a magnetic storage device and tempered pacing technology, applied in the field of data storage and hard disk drives, can solve the problems of unpredictability and unpredictable performance of the large number of data storage drives within the storage facility

Active Publication Date: 2016-08-18
WESTERN DIGITAL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach provides a consistent and predictable performance for host systems by managing the reporting pace of write operations, reducing the bursty nature of SMR technology and maintaining steady throughput, thus enhancing data transfer efficiency and power management in large data centers.

Problems solved by technology

However, differences in host-side throughputs of data storage drives that include SMR technology can lead to unpredictable performance for individual data storage drives and thus unpredictable performance for the large number of data storage drives within a storage facility.

Method used

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  • Tempered pacing of shingled magnetic storage devices
  • Tempered pacing of shingled magnetic storage devices
  • Tempered pacing of shingled magnetic storage devices

Examples

Experimental program
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Embodiment Construction

[0016]High-density magnetic storage devices employ a variety of storage technologies. One such storage technology includes rotating data storage drives with shingled magnetic recording (SMR) technology. SMR technology allows for read / write heads to physically overlap adjacent data tracks on the storage media, in contrast to a non-overlapping recording technology, such as parallel magnetic recording (PMR). However, devices that employ SMR technology can lead to “bursty” performance for random writes and slower performance for fragmented reads. The bursty performance can result from using a temporary storage region or exception region on the storage media that doesn't employ SMR techniques. This temporary storage region can be used to store data quickly before archival into the SMR regions, and allows for a fast treatment of write data from the perspective of host systems. In many examples, random writes to a device than employs SMR techniques can occur more rapidly than an equivalent...

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Abstract

To provide enhanced operation of data storage devices and systems, various systems, apparatuses, methods, and software are provided herein. In a first example, a data storage device is provided that includes storage media comprising a shingled magnetic recording (SMR) storage region. The data storage device also includes a storage control system configured to receive write operations and responsively store write data in a first storage region prior to transferring into the SMR storage region. The storage control system is configured to determine a reporting pace for transferring the write operations from the first storage region into the SMR storage region, the reporting pace establishing a target performance that is tempered from storage of the write data into the first storage region. The storage control system is configured to report completion of the write operations over a host interface at the reporting pace.

Description

TECHNICAL FIELD[0001]Aspects of the disclosure are related to the field of data storage and hard disk drives in data storage systems.TECHNICAL BACKGROUND[0002]Computer and network systems such as personal computers, workstations, server systems, and cloud storage systems, typically include data storage elements for storing and retrieving data. These data storage elements can include data storage devices, such as hard disk drives, solid state storage devices, hybrid storage devices, tape storage devices, and other mass storage devices. Manufacturers of data storage devices typically manufacture different grades of data storage devices that can have different performance characteristics, such as throughput rates, transaction buffer sizes, rotation rates for rotating magnetic media, or latencies, among other characteristics.[0003]As computer systems and networks grow in numbers and capability, there is a need for more and more storage capacity. Cloud computing and large-scale data proc...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06F3/06
CPCG06F3/0653G06F3/0676G06F3/061G06F3/0604G06F3/0613G06F3/0629G06F3/0673G06F3/0611G06F3/0658G06F3/0689G06F3/0659G11B20/10527G11B2020/10657
Inventor HALL, DAVID
Owner WESTERN DIGITAL TECH INC