Patent
Write-back disk cache management
Edward K. Lee,Boon-Lock Yeo +1 more
- 09 Dec 2002
62
TL;DR: In this paper, the authors describe a method for preserving the ordering of writes issued to a disk array consisting of disks that support write-back caching, without requiring the frequent flushing of the writeback cache.
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Abstract: A method for efficiently utilizing write-back caches in disk drives to build inexpensive, high-performance, reliable disk arrays. In particular, we describe a method for preserving the ordering of writes issued to a disk array consisting of disks that support write-back caching, without requiring the frequent flushing of the write-back cache.
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Citations
Patent
Clustered RAID data organization
Rajesh Sundaram,Bharat C. V. Baddepudi,Jeffrey S. Kimmel +2 more
- 17 Jan 2014
TL;DR: In this article, a node of a cluster having a plurality of nodes, executes a storage input/output (I/O) stack having a redundant array of independent disks (RAID) layer.
35
Patent
Coalescing disk write back requests
Michael Eschmann,Jeanna Matthews,John I. Garney,Robert J. Royer +3 more
- 31 Dec 2003
TL;DR: Cache write back requests may be coalesced to reduce disk accesses and improve overall system performance in some embodiments of the present invention as mentioned in this paper, where data from more than one cache line may be merged into a single write back request and written back in one atomic write to the disk drive.
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TL;DR: In this article, the volume layer of a storage I/O stack executing on one or more nodes of a cluster is represented as mappings from addresses, i.e., logical block addresses (LBAs), of a logical unit (LUN) accessible by a host to durable extent keys maintained by an extent store layer.
33
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Method and system for storing data in an array of storage devices with additional and autonomic protection
Amine M. Hajji
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TL;DR: In this paper, a method for storing data in an array of storage devices is described, where a first strip is written to a first storage device and a second storage device, followed by a third strip to a third storage device.
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Providing continuous context for operational information of a storage system
Brian Pawlowski,Daniel Nghia Truong,Brian Hackworth,Jing Shi,Mrinmoy Majumdar +4 more
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TL;DR: In this article, a system management tool provides a comprehensive summary of operational information of a storage system, including a digital dashboard (dashboard) in a graphical user interface, and views that correspond to different dimensions of the storage system.
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References
Patent
Methods and structure for RAID level migration within a logical unit
Rodney A. DeKoning
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TL;DR: In this paper, the authors define partitions within a RAID storage system LUN such that each partition is managed in accordance with RAID management techniques independent of the other partitions, and each partition can be reconfigured to use a different RAID level (i.e., level 3 or 5) to reduce overhead storage needs at the cost of decreased write performance.
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Method for accelerating disk array write operations using segmented cache memory and data logging
Rodney A. DeKoning
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TL;DR: In this article, a cache-extension disk region is used to expand the size of the log structured cache by partitioning the cache memory region into write cache segments and redundancy data (parity) cache segments.
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Patent
Cache flush apparatus and computer system having the same
Masubuchi Yoshio,Takuya Kano,Hiroshi Sakai +2 more
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TL;DR: In this article, the authors proposed a cache flush mechanism to shorten the time required to perform the cache flush procedure and to improve the performance of a computer system having the cache flushing apparatus.
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