Increased replication for managed volumes

US12332754B2 · kind B2 · utility

Assignee

• SAP SE · DE

Inventors

• Markus Behrens · Berlin, DE
• Reiner Singer · Schriesheim, DE
• Werner Thesing · Herbstein, DE
• Yue Zhu · Newark, US
• Mitja Kleider · Heidelberg, DE
• Omran Saleh · Wiesloch, DE
• Timo Sulg · Frankfurt, DE
• Marcel Birn · Karlsruhe, DE
• Christoph Roterring · Sinsheim, DE

Key dates

• Filing date: Jul 31, 2023
• Grant date: Jun 17, 2025
• Expiry date: Sep 5, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F11/2082
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A scale-out computing cluster may include a large number of computing servers and storage devices. In order to provide high reliability, the computing cluster must be able to handle failures of individual devices. Reliability of the computing cluster may be improved by providing a standby server for each active server in the computing cluster. If any active server fails, the corresponding standby server is activated. The failed server may be brought back online or replaced, at which time the restored server becomes the standby server for the now-active original standby server. During the restoration period, if any other active server fails, the standby server for that active server is immediately activated. As a result, the recovery ability of the computing cluster is only challenged if both servers of an active/standby pair fail during the restoration period, substantially improving reliability.