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  1. HybRAID: A High-Performance Hybrid RAID Storage Architecture for Write-Intensive Applications in All-Flash Storage Systems
HybRAID: A High-Performance Hybrid RAID Storage Architecture for Write-Intensive Applications in All-Flash Storage Systems
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HybRAID: A High-Performance Hybrid RAID Storage Architecture for Write-Intensive Applications in All-Flash Storage Systems

Karimi, M.

  1. DOI:10.1109/TPDS.2024.3429336
  2. Main Entry: Karimi, M.
  3. Title:HybRAID: A High-Performance Hybrid RAID Storage Architecture for Write-Intensive Applications in All-Flash Storage Systems.
  4. Publisher:2024.
  5. Abstract:With the ever-increasing demand for higher I/O performance and reliability in data-intensive applications, solid-state drives (SSDs) typically configured as redundant array of independent disks (RAID) are broadly used in enterprise all-flash storage systems. While a mirrored RAID offers higher performance in random access workloads, parity-based RAIDs (e.g., RAID5) provide higher performance in sequential accesses with less cost overhead. Previous studies try to address the poor performance of parity-based RAIDs in small writes (i.e., writes into a single disk) by offering various schemes, including caching or logging small writes. However, such techniques impose a significant performance and/or reliability overheads and are seldom used in the industry. In addition, our empirical analysis shows that partial stripe writes, i.e., writing into a fraction of a full array in parity-based RAIDs, can significantly degrade the I/O performance, which has not been addressed in the previous work. In this paper, we first offer an empirical study which reveals partial stripe writes reduce the performance of parity-based RAIDs by up to 6.85× compared to full stripe writes (i.e., writes into entire disks). Then, we propose a high-performance hybrid RAID storage architecture, called HybRAID, which is optimized for write-intensive applications. HybRAID exploits the advantages of mirror- and parity-based RAIDs to improve the write performance. HybRAID directs a) aligned full stripe writes to parity-based RAID tier and b) small/partial stripe writes to the RAID1 tier. We propose an online migration scheme, which aims to move small/partial writes from parity-based RAID to RAID1, based on access frequency of updates. As a complement, we further offer offline migration, whose aim is to make room in the fast tier for future references. Experimental results over enterprise SSDs show that HybRAID improves the performance of write-intensive applications by 3.3× and 2.6×, as well as enhancing performance per cost by 3.1× and 3.0× compared to parity-based RAID and RAID10, respectively, at equivalent costs. © 1990-2012 IEEE
  6. Notes:Sharif Repository
  7. Subject:All-flash storage systems.
  8. Subject:Redundant array of independent disks.
  9. Subject:Solid-state drives.
  10. Subject:Data-intensive application.
  11. Subject:Flash storage.
  12. Subject:Performance.
  13. Subject:Performance and reliabilities.
  14. Subject:Random access.
  15. Subject:Storage architectures.
  16. Subject:Storage systems.
  17. Subject:Hard disk storage.
  18. Added Entry:Salkhordeh, R.
  19. Added Entry:Brinkmann, A.
  20. Added Entry:Asadi, H.
  21. Added Entry:Sharif University of Technology.
  22. Source: IEEE Transactions on Parallel and Distributed Systems ; Volume 35, Issue 12 , 2024 , Pages 2608-2623 ; 10459219 (ISSN)
  23. Web Site:https://dl.acm.org/doi/10.1109/TPDS.2024.3429336

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