Towards a Performance Model for Virtualised Multi-Tier Storage - - PowerPoint PPT Presentation

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Towards a Performance Model for Virtualised Multi-Tier Storage - - PowerPoint PPT Presentation

Nov 29, 2023 17 likes •87 views

Towards a Performance Model for Virtualised Multi-Tier Storage Systems Nicholas Dingle, Peter Harrison, William Knottenbelt, Abigail Lebrecht and Soraya Zertal Department of Computing, Imperial College London, UK AESOP Group:

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Towards a Performance Model for Virtualised Multi-Tier Storage Systems

Nicholas Dingle, Peter Harrison, William Knottenbelt, Abigail Lebrecht and Soraya Zertal

AESOP Group: http://aesop.doc.ic.ac.uk

Department of Computing, Imperial College London, UK

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SLIDE 2

This work contributes towards:

iPODS: Intelligent Performance Optimisation of Virtualised Data Storage Systems Project

Sponsored by Ref: EP/F010192/1 Project Partners:

Project Objective: Strategies for Data Placement and Data Migration

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Disk Model RAID Model Virtualised Tiered Storage System Model

Project Overview

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Initial Results: Zoned Disk model

Measured and modelled cumulative distribution functions of data transfer time for 100MB requests. Measurements are taken from a single 7200rpm 500GB SATA Seagate disk (ST3500630NS).

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Initial Results: RAID 0-1

Measured and modelled cumulative distribution functions of RAID 0-1 read (left) and write (right) requests. Measurements are taken from an Infortrend A16F-G2430 RAID system containing 4 Seagate ST3500630NS disks, with a stripe width of 128kB.

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Initial Results: RAID 5

Measured and modelled cumulative distribution functions of RAID 5 read (left) and write (right) requests.

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Thank You

AESOP Group: http://aesop.doc.ic.ac.uk

Contact: {asl102,njd200,pgh,wjk}@doc.ic.ac.uk, zertal@prism.uvsq.fr