Cross-Rack Update Bandwidth for Distributed Storage Systems
- Resource Type
- Conference
- Authors
- Jiang, Zhengyi; Yu, Bin; Huang, Zhongyi; Zhang, Gong; Hu, Qintao; Hou, Hanxu
- Source
- GLOBECOM 2023 - 2023 IEEE Global Communications Conference Global Communications Conference, GLOBECOM 2023 - 2023 IEEE. :3699-3704 Dec, 2023
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineering Profession
General Topics for Engineers
Power, Energy and Industry Applications
Signal Processing and Analysis
Codes
Costs
Symbols
Bandwidth
Global communication
Cross-rack update bandwidth
distributed storage system
erasure codes
- Language
- ISSN
- 2576-6813
In distributed storage systems, storage nodes are organized in racks in which the cross-rack communication cost is much more expensive than the intra-rack communication cost. It is critical to design erasure codes that minimize the cross-rack update bandwidth which is defined as the total amount of symbols transferred across different racks during an update process. In this paper, we analyze the cross-rack update bandwidth of erasure codes for distributed storage systems. We derive a lower bound on the cross-rack update bandwidth and show that the proposed lower bound is achievable under certain parameters.