Getting the MOST out of your Storage Hierarchy with Mirror-Optimized Storage Tiering
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866911299487662080 |
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| author | Tu, Kaiwei Wu, Kan Arpaci-Dusseau, Andrea C. Arpaci-Dusseau, Remzi H. |
| author_facet | Tu, Kaiwei Wu, Kan Arpaci-Dusseau, Andrea C. Arpaci-Dusseau, Remzi H. |
| contents | We present Mirror-Optimized Storage Tiering (MOST), a novel tiering-based approach optimized for modern storage hierarchies. The key idea of MOST is to combine the load balancing advantages of mirroring with the space-efficiency advantages of tiering. Specifically, MOST dynamically mirrors a small amount of hot data across storage tiers to efficiently balance load, avoiding costly migrations. As a result, MOST is as space-efficient as classic tiering while achieving better bandwidth utilization under I/O-intensive workloads. We implement MOST in Cerberus, a user-level storage management layer based on CacheLib. We show the efficacy of Cerberus through a comprehensive empirical study: across a range of static and dynamic workloads, Cerberus achieves better throughput than competing approaches on modern storage hierarchies especially under I/O-intensive and dynamic workloads. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_03279 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Getting the MOST out of your Storage Hierarchy with Mirror-Optimized Storage Tiering Tu, Kaiwei Wu, Kan Arpaci-Dusseau, Andrea C. Arpaci-Dusseau, Remzi H. Operating Systems We present Mirror-Optimized Storage Tiering (MOST), a novel tiering-based approach optimized for modern storage hierarchies. The key idea of MOST is to combine the load balancing advantages of mirroring with the space-efficiency advantages of tiering. Specifically, MOST dynamically mirrors a small amount of hot data across storage tiers to efficiently balance load, avoiding costly migrations. As a result, MOST is as space-efficient as classic tiering while achieving better bandwidth utilization under I/O-intensive workloads. We implement MOST in Cerberus, a user-level storage management layer based on CacheLib. We show the efficacy of Cerberus through a comprehensive empirical study: across a range of static and dynamic workloads, Cerberus achieves better throughput than competing approaches on modern storage hierarchies especially under I/O-intensive and dynamic workloads. |
| title | Getting the MOST out of your Storage Hierarchy with Mirror-Optimized Storage Tiering |
| topic | Operating Systems |
| url | https://arxiv.org/abs/2512.03279 |