SCHEDULE: NOV 15-20, 2015

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A Practical Approach to Reconciling Availability, Performance, and Capacity in Provisioning Extreme-Scale Storage Systems

SESSION: State of the Practice: Measuring Systems

EVENT TYPE: Papers

EVENT TAG(S): Storage, State of Practice, Facilities, Performance

TIME: 2:30PM - 3:00PM

SESSION CHAIR(S): Neil Chue Hong

AUTHOR(S):Lipeng Wan, Feiyi Wang, Sarp Oral, Devesh Tiwari, Sudharshan S. Vazhkudai, Qing Cao

ROOM:18AB

ABSTRACT:

The increasing data demands from high-performance computing applications significantly accelerate the capacity, capability, and reliability requirements of storage systems. As systems scale, component failures and repair times increase, with significant impact to data availability. A wide array of decision points must be balanced in designing such systems.

We propose a systematic approach that balances and optimizes both initial and continuous spare provisioning based on a detailed investigation of the anatomy and field failure data analysis of extreme-scale storage systems. We consider both the component failure characteristics, the cost and the impact at the system level simultaneously. We build a provisioning tool to evaluate different provisioning schemes and the results demonstrate that our optimized provisioning can reduce the unavailable duration by as much as 52% under a fixed budget. We also observe that non-disk components have much higher failure rates than disks, therefore warrant careful considerations in the overall provisioning process.

Chair/Author Details:

Neil Chue Hong (Chair) - University of Edinburgh|

Lipeng Wan - University of Tennessee, Knoxville

Feiyi Wang - Oak Ridge National Laboratory

Sarp Oral - Oak Ridge National Laboratory

Devesh Tiwari - Oak Ridge National Laboratory

Sudharshan S. Vazhkudai - Oak Ridge National Laboratory

Qing Cao - University of Tennessee, Knoxville

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Paper provided by the ACM Digital Library

Paper also available from IEEE Computer Society