Name
Abstract | ||
|---|---|---|
SSD suffer from lifetime problem, particularly when they are deployed in all flash RAID5 systems and work under workload dominated by random updates. To cost- effectively and reliably extend the lifetime of those SSD, we propose a novel reliable hierarchical buffer cache, named RH-cache. RHcache consists of an upper- level write cache built upon a smallsize NVRAM and a lower-level write cache built upon a sub-RAID divided from the underlying SSD RAID. The upper-level write cache merges random updates into sequential writes thus reducing updates on the parity chunks. And the lower- level write cache can reduce the updates on data chunks by exploring content locality in the write workload. A prototype of RH-cache has been built to evaluate its effectiveness and efficiency. Both I/O benchmarks and real-world workloads driven experiments are conducted. The experimental results demonstrate RH-cache can reduce the updates in SSD by up to 80% compared with that without RH-cache. |
Year | DOI | Venue |
|---|---|---|
2017 | 10.1109/NAS.2017.8026858 | 2017 International Conference on Networking, Architecture, and Storage (NAS) |
Keywords | Field | DocType |
SSD,flash RAID5 systems,reliable hierarchical buffer cache,RH-cache,upper-level write cache,smallsize NVRAM,lower-level write cache,sub-RAID,sequential writes,parity chunks,data chunks,content locality,write workload | Disk buffer,Locality,Cache,Non-volatile random-access memory,Computer science,Parallel computing,Cache algorithms,Real-time computing,Write buffer,RAID,Operating system,Write-once | Conference |
ISBN | Citations | PageRank |
978-1-5386-3487-5 | 1 | 0.35 |
References | Authors | |
18 | 3 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Rui Ye | 1 | 25 | 7.80 |
| Wentao Meng | 2 | 1 | 0.35 |
| Shenggang Wan | 3 | 112 | 10.87 |