More IOPS for Less: Exploiting Burstable Storage in Public Clouds
summary
Cloud burstable volumes (AWS gp2) start with equal burst credits per volume and credits are per-volume, not per-capacity. Using 10×10 GiB volumes replaced every 22 minutes with software RAID and RAID1 rebuild migration on c5 instances and measuring with fio, aggregated burst reaches 30,000 IOPS vs 300 IOPS baseline (100×) while incurring about 10% extra cost and rebuild dips; average effective gain is 93–99×. Compared to provisioned io1 for same throughput, cost drops ~97.5%.
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chapters (9)
- 0:00Intro
- 0:32Burstable storage service Cloud storage type that has "burst credits"
- 1:45AWS Case Study: Burstable storage service Eg., Using 100 GIB of General Purpose SSD
- 3:27Two properties of burstable storage service
- 5:55Use cases: exploiting burstable storage 1. Persistent data storage 2. SSD caching (write-through policy)
- 8:37Use case. Persistent data storage - Design
- 10:30Evaluation: Persistent data storage
- 13:54Conclusion
- 14:40Discussion topics
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