Pareto-optimised Fog Storage Services with novel Service-Level Agreement specification

Kochovski, Petar (author), Paščinski, Uroš (author), Stankovski, Vlado (author), Ciglarič, Mojca (author)

(1) Background: Cloud storage is often required for successful operation of novel smart applications, relying on data produced by the Internet of Things (IoT) devices. Big Data processing tasks and management operations for such applications require high Quality of Service (QoS) guarantees, requiring an Edge/Fog computing approach. Additionally, users often require specific guarantees in the form of Service Level Agreements (SLAs) for storage services. To address these problems, we propose QoS-enabled Fog Storage Services, implemented as containerised storage services, orchestrated across the Things-to-Cloud computing continuum. (2) Method: The placement of containerised data storage services in the Things-to-Cloud continuum is dynamically decided using a novel Pareto-based decision-making process based on high availability, high throughput, and other QoS demands of the user. The proposed concept is first confirmed via simulation and then tested in a real-world environment. (3) Results: The decision-making mechanism and a novel SLA specification have been successfully implemented and integrated in the DECENTER Fog and Brokerage Platform to complement the orchestration services for storage containers, thus presenting their applicable value. Simulation results as well as practical experimentation in a Europe-wide testbed have shown that the proposed decision-making method can deliver a set of optimal storage nodes, thus meeting the SLA requirements. (4) Conclusion: It is possible to provide new smart applications with the expected SLA guarantees and high QoS for our proposed Fog Storage Services.

• Language: English
• Keywords: Fog Storage Services, Quality of Service, Service Level Agreement specification, decision making, Pareto
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FRI - Faculty of Computer and Information Science
• Publication status: Published
• Publication version: Version of Record
• Year: 2022
• Number of pages: 19 str.
• Numbering: Vol. 12, iss. 7, art. 3308
• PID: 20.500.12556/RUL-137509
• UDC: 004.7
• ISSN on article: 2076-3417
• DOI: 10.3390/app12073308
• COBISS.SI-ID: 102526979
• Publication date in RUL: 20.06.2022

Record is a part of a journal

• Title: Applied sciences
• Shortened title: Appl. sci.
• Publisher: MDPI
• ISSN: 2076-3417
• COBISS.SI-ID: 522979353

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 01.04.2022

Secondary language

• Language: Slovenian
• Keywords: računalništvo v megli, kakovost storitev, SLA specifikacija, Pareto

Projects

• Funder: EC - European Commission
• Funding programme: H2020
• Project number: 815141
• Name: Decentralised technologies for orchestrated cloud-to-edge intelligence
• Acronym: DECENTER

• Funder: EC - European Commission
• Funding programme: H2020
• Project number: 957338
• Name: Trusted, traceable and transparent ontological knowledge on blockchain
• Acronym: ONTOCHAIN