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1. 发明申请

US20200333983A1 STORAGE ARRAY SUPPORTING MULTI-THREAD ACCESS 审中-公开
公开(公告)号：US20200333983A1
公开(公告)日：2020-10-22
申请号：US16817851
申请日：2020-03-13
申请人： Quantum Corporation
发明人： Don Doerner , Marc A. Smith , Matthew C. Dewey
IPC分类号： G06F3/06 , G06F11/10 , H03M13/29 , H03M13/15 , G06F9/48
摘要： Systems, methods, and circuitries are provided for supporting multiple concurrent thread access to a storage array. In one example, a storage array includes a plurality of storage devices each divided into at least N subdivisions. A volume includes a set of subdivisions including a subdivision in each of M different storage devices in the plurality of storage devices. Memory management circuitry is configured to receive first data and second data for storing in the storage array and select a first volume for storing the first data and a second volume for storing the second data. The second volume includes a different set of subdivisions than the first volume. The processor is configured to use a first set of processor threads to process and store the first data in the first volume and use a second set of processor threads to, concurrent with the processing and storing of the first data, process and store the second data in the second volume.

2. 发明授权

US10606749B2 Adaptive storage management for optimizing multi-tier data storage system 有权
公开(公告)号：US10606749B2
公开(公告)日：2020-03-31
申请号：US15943883
申请日：2018-04-03
申请人： Quantum Corporation
发明人： Don Doerner
IPC分类号： G06F12/0804 , G06F12/0891 , G06F12/121
摘要： Embodiments provide adaptive storage management for optimizing multi-tier data storage. A storage manager may interact with storage decision advisors. The manager may adaptively make storage management decisions (e.g., flush, evict, recall, delete) after considering recommendations from and the credibility of the storage decision advisors. The manager may update the credibility of storage decision advisors based on how their recommendations affected optimization. The manager may adaptively choose when to rebalance or reconfigure the credibility of the storage decision advisors. Storage decision advisors may themselves be adaptive. Storage decision advisors may examine credibility feedback from the storage manager to determine which recommendations were useful and which were not. Storage decision advisors may then change when they will make a recommendation, when they will abstain from making a recommendation, the type of recommendation provided, or other behavior. Optimization may concern performance, cost, power usage, or other factors.

3. 发明授权

US10552640B2 In-situ data verification for the cloud 有权
公开(公告)号：US10552640B2
公开(公告)日：2020-02-04
申请号：US15632584
申请日：2017-06-26
申请人： Quantum Corporation
发明人： Don Doerner , Gregory L. Wade
IPC分类号： G06F21/00 , G06F21/64 , G06F21/60 , H04L9/06 , H04L29/08
摘要： Example methods and apparatus asynchronously verify data stored in a cloud data storage system. One embodiment comprises a monitoring circuit that determines if a data auditing condition associated with a cloud storage system or archived data stored in the cloud storage system has been met, a metadata mirror circuit that controls a metadata mirror to provide metadata, including a first checksum, associated with the archived data to the apparatus, a checksum circuit that computes a second checksum based on the archived data, a verification circuit that generates an audit of the first checksum and the second checksum by comparing the second checksum with the first checksum, and a reporting circuit that generates a log of the audit, that provides the log to the data storage system, and that provides a notification of a data integrity failure to a user associated with the archived data.

4. 发明授权

US10380066B2 File system with multi-class in situ tiered archiving 有权
公开(公告)号：US10380066B2
公开(公告)日：2019-08-13
申请号：US14795463
申请日：2015-07-09
申请人： Quantum Corporation
发明人： Roderick Wideman , Don Doerner
IPC分类号： G06F17/30 , G06F16/11 , G06F16/16
摘要： Example apparatus and methods provide a file system that stores files in multiple different logical units. The logical units are associated with different classes of devices. The file system interacts with the logical units through block-based interfaces. The file system is a single file system that spans the multiple logical units. The multiple different logical units include data storage devices for which the file system manages block storage allocation and an object storage system that manages its own block storage allocation rather than having the file system manage its block storage allocation. The file system may maintain a single namespace, hierarchy, or directory structure for the multiple logical units. The object storage system may protect files using redundant copies, erasure codes, or other approaches. An archive process may selectively move files from other devices to the object storage system and leave a symbolic link behind.

5. 发明申请

US20170277630A1 GARBAGE COLLECTION AND DEFRAGMENTATION FOR SOLID STATE DRIVES (SSD) AND SHINGLED MAGNETIC RECORDING (SMR) DRIVES 审中-公开
公开(公告)号：US20170277630A1
公开(公告)日：2017-09-28
申请号：US15618723
申请日：2017-06-09
申请人： Quantum Corporation
发明人： Roderick B. Wideman , Don Doerner
IPC分类号： G06F12/02 , H03M13/37
CPC分类号： G06F12/0246 , G06F2212/1044 , G06F2212/214 , G06F2212/7205 , H03M13/373 , H03M13/3761 , Y02D10/13
摘要： Example apparatus and methods provide improved reclamation, garbage collection (GC) and defragmentation (defrag) for data storage devices including solid state drives (SSD) or shingled magnetic recording (SMR) drives. An erasure code (EC) layer that facilitates logically or physically erasing data from the SSD or SMR as a comprehensive GC or defrag is added to the SSD or SMR. Erased data may be selectively recreated from the EC layer as needed. Pre-planned EC write zones may be established to further optimize GC and defrag. Recreated data may be written to selected locations to further optimize SSD and SMR performance. Erasure code data may be distributed to co-operating devices to further improve GC or defrag. Example apparatus and methods may also facilitate writing data to an SMR drive using tape or VTL applications or processes and providing a pseudo virtual tape library on the SMR drive.

6. 发明申请

US20160357437A1 Log Structured Block Device 有权
标题翻译：日志结构块设备
公开(公告)号：US20160357437A1
公开(公告)日：2016-12-08
申请号：US14728038
申请日：2015-06-02
申请人： Quantum Corporation
发明人： Don Doerner
IPC分类号： G06F3/06
CPC分类号： G06F3/0676 , G06F3/0613 , G06F3/064 , G06F3/0641 , G06F12/0246 , G11B20/1426
摘要： Example apparatus and methods provide a log structured block device for a hard disk drive (HDD). Data that is to be stored on an HDD is serialized and written as a series of data blocks using a sequential write. Information about where individual data blocks were supposed to be written (e.g., actual address, neighboring data blocks), where data blocks were actually written, and how often data blocks are accessed is maintained. During garbage collection, data blocks that are being accessed with similar frequencies may be relocated together, with the most frequently accessed (e.g., hottest) data blocks migrating to the outer cylinders of the disk and the least frequently accessed (e.g., coldest) data blocks migrating to the inner cylinders. Blocks stored in the same temperature regions that were intended to be located together when written may be repositioned to facilitate sequential reads.
摘要翻译：示例性设备和方法提供用于硬盘驱动器（HDD）的日志结构化块设备。要存储在HDD上的数据被串行化并且使用顺序写入被写入一系列数据块。关于数据块被实际写入的单个数据块应被写入的信息（例如，实际地址，相邻数据块）以及数据块被访问的频率。在垃圾收集期间，正在以类似频率访问的数据块可以重新定位在一起，其中最常访问（例如，最热的）数据块迁移到盘的外圆柱体和最不频繁访问（例如最冷）的数据块迁移到内筒。存储在相同温度区域中的块，当写入时要放在一起的块可以重新定位，以便顺序读取。

7. 发明授权

US11126591B2 Filter file system with inode number as primary database key 有权
公开(公告)号：US11126591B2
公开(公告)日：2021-09-21
申请号：US16669574
申请日：2019-10-31
申请人： Quantum Corporation
发明人： Roderick B. Wideman , Don Doerner , Michael Zeis
IPC分类号： G06F16/13 , G06F16/17 , G06F16/16
摘要： Example apparatus and methods identify files that are so small or so large that they compromise the efficient operation of a file system that uses re-assignable one-to-one inodes and inode numbers. Small files are aggregated into collections of files and large files are subdivided into collections of smaller files. Information for locating multiple related files with fewer lookups is generated and stored in a folder. An inode having a new type of inode number is then created. The new type of inode number encodes information for finding the folder. The encoded information may include a folder identifier that acts as a primary key into a database that is configured to locate a member of the aggregated or subdivided files with a single lookup. A filter file system may be updated with the new inode. The new inode number is unique within the filter file system and may not be re-assigned.

8. 发明授权

US10168963B2 Storage conditioning with intelligent rebuild 有权
公开(公告)号：US10168963B2
公开(公告)日：2019-01-01
申请号：US14944251
申请日：2015-11-18
申请人： Quantum Corporation
发明人： Don Doerner
IPC分类号： G06F3/06 , G06F11/14
摘要： Storage conditioning for a data storage system having D data storage devices (DSDs) is provided. E erasure codes (ECs) for an object are stored in the system, D>E. A map of d E-sized vectors of the D DSDs is produced. A DSD appears in e vectors. The ratio d/e is the reduced form of D/E. A hash value is produced for the object. A destination vector for storing the ECs is selected using the hash value according to a pre-determined, substantially uniform distribution. A compromised vector affected by a first DSD becoming unable to store ECs is identified. An intact vector that is not affected by the first DSD is identified. A complete set of ECs is produced from an incomplete set of ECs in the compromised vector and is distributed to the intact vector then copied back when the compromised vector is once again intact.

9. 发明授权

US09450617B2 Distribution and replication of erasure codes 有权
标题翻译：擦除代码的分发和复制
公开(公告)号：US09450617B2
公开(公告)日：2016-09-20
申请号：US14455529
申请日：2014-08-08
申请人： Quantum Corporation
发明人： Don Doerner
IPC分类号： H03M13/37
CPC分类号： H03M13/3761 , H03M13/373
摘要： Example apparatus and methods selectively replicate some erasure codes associated with a message and selectively distribute, without replicating, other erasure codes associated with the message. The message may have k symbols and n erasure codes may have been generated for the message, n>=k. In one embodiment, erasure codes that store plaintext information from the message (e.g., un-encoded symbols) may be replicated (e.g., sent to all devices using erasure codes associated with the message) while erasure codes that do not store plaintext information may be distributed (e.g., selectively moved to less than all devices) without being replicated. Some (e.g., less than k) erasure codes that do not store plaintext information may be stored unencrypted in the cloud. The generator matrix will not be stored in the cloud.
摘要翻译：示例性设备和方法选择性地复制与消息相关联的一些擦除代码，并且选择性地分配与该消息相关联的其它擦除代码。消息可以具有k个符号，并且可以为该消息生成n个擦除代码，n> = k。在一个实施例中，可以复制来自消息（例如，未编码符号）的明文信息的擦除代码（例如，使用与消息相关联的擦除代码发送到所有设备），而不存储明文信息的擦除代码可以是分布式（例如，选择性地移动到小于所有设备）而不被复制。不存储明文信息的一些（例如小于k个）擦除代码可以在云中未被加密地存储。发电机矩阵不会存储在云中。

10. 发明授权

US09431054B1 Doubly distributed erasure codes 有权
标题翻译：双重分布的擦除代码
公开(公告)号：US09431054B1
公开(公告)日：2016-08-30
申请号：US14727893
申请日：2015-06-02
申请人： Quantum Corporation
发明人： Turguy Goker , Suayb S. Arslan , Don Doerner , Hoa Le
IPC分类号： G11B5/09 , G11B20/18 , G11B5/008 , G06F11/10 , H03M13/15 , H03M13/27 , H04L1/00 , H03M13/11 , G11B20/14
CPC分类号： G11B20/1833 , G06F11/1076 , G11B20/1426 , H03M13/116 , H03M13/154 , H03M13/2792 , H04L1/0057
摘要： Methods, apparatus, and other embodiments associated with doubly distributing erasure encoded data in a data storage system are described. One example apparatus includes a set of data storage devices and a set of logics that includes an encoding logic that generates an erasure encoded object that includes code-words, and chunks the code-words into code-word chunks, and a distribution logic that interleaves members of the set of code-word chunks into a plurality of records, and distributes the records across the data storage devices and within individual data storage devices. Example apparatus may include a read logic that reads the plurality of stored records from the data storage devices, and ignores read errors, and a repair logic that monitors the set of data storage devices, replaces or repairs failing data storage devices, generates replacement records, and stores the replacement records on a replacement data storage device.
摘要翻译：描述了与在数据存储系统中双重分配擦除编码数据相关联的方法，装置和其他实施例。一个示例性设备包括一组数据存储设备和一组逻辑，其包括生成包括码字的擦除编码对象的编码逻辑，并且将码字块编码为码字块，以及交织逻辑将该组代码字块的成员分成多个记录，并且在数据存储设备和各个数据存储设备内分发记录。示例性设备可以包括从数据存储设备读取多个存储的记录并忽略读取错误的读取逻辑，以及监视数据存储设备的集合，替换或修复故障数据存储设备的修复逻辑，生成替换记录，并将替换记录存储在替换数据存储装置上。

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