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公开(公告)号：US20210294514A1
公开(公告)日：2021-09-23
申请号：US17341229
申请日：2021-06-07
申请人： Quantum Corporation
IPC分类号： G06F3/06
摘要： Embodiments disclosed herein provide systems, methods, and computer-readable media to implement an object store with removable storage media. In a particular embodiment, a method provides identifying first data for storage on a first removable storage medium and designating at least a portion of the first data to a first data object. The method further provides determining a first location where to store the first data object in a first value store partition of the first removable storage medium and writing the first data object to the first location. Also, the method provides writing a first key that identifies the first data object and indicates the first location to a first key store partition of the first removable storage medium.
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公开(公告)号：US10853187B2
公开(公告)日：2020-12-01
申请号：US16285320
申请日：2019-02-26
申请人： Quantum Corporation
摘要： Methods and apparatus deduplicate and erasure code a message in a data storage system. One example apparatus includes a first chunking circuit that generates a set of data chunks from a message, an outer precoding circuit that generates a set of precoded data chunks and a set of parity symbols from the set of data chunks, a second chunking circuit that generates a set of chunked parity symbols from the set of parity symbols, a deduplication circuit that generates a set of deduplicated data chunks by deduplicating the set of precoded chunks or the set of chunked parity symbols, an unequal error protection (UEP) circuit that generates an encoded message from the set of deduplicated data chunks, and a storage circuit that controls the data storage system to store the set of deduplicated data chunks, the set of parity symbols, or the encoded message.
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公开(公告)号：US20200065293A1
公开(公告)日：2020-02-27
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
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.
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公开(公告)号：US09692452B2
公开(公告)日：2017-06-27
申请号：US15227285
申请日：2016-08-03
申请人： Quantum Corporation
CPC分类号： H03M13/154 , G06F3/0619 , G06F3/064 , G06F3/0641 , G06F3/0673 , G06F11/1076 , G06F11/1453 , H03M13/3707 , H03M13/373 , H03M13/3761
摘要： Example apparatus and methods combine erasure coding with data deduplication to simultaneously reduce the overall redundancy in data while increasing the redundancy of unique data. In one embodiment, an efficient representation of a data set is produced by deduplication. The efficient representation reduces duplicate data in the data set. Redundancy is then added back into the data set using erasure coding. The redundancy that is added back in adds protection to the unique data associated with the efficient representation. How much redundancy is added back in and what type of redundancy is added back in may be controlled based on an attribute (e.g., value, reference count, symbol size, number of symbols) of the unique data. Decisions concerning how much and what type of redundancy to add back in may be adapted over time based, for example, on observations of the efficiency of the overall system.
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公开(公告)号：US20160013815A1
公开(公告)日：2016-01-14
申请号：US14326774
申请日：2014-07-09
申请人： Quantum Corporation
CPC分类号： H03M13/154 , G06F3/0619 , G06F3/064 , G06F3/0641 , G06F3/0673 , G06F11/1076 , G06F11/1453 , H03M13/3707 , H03M13/373 , H03M13/3761
摘要： Example apparatus and methods combine erasure coding with data deduplication to simultaneously reduce the overall redundancy in data while increasing the redundancy of unique data. In one embodiment, an efficient representation of a data set is produced by deduplication. The efficient representation reduces duplicate data in the data set. Redundancy is then added back into the data set using erasure coding. The redundancy that is added back in adds protection to the unique data associated with the efficient representation. How much redundancy is added back in and what type of redundancy is added back in may be controlled based on an attribute (e.g., value, reference count, symbol size, number of symbols) of the unique data. Decisions concerning how much and what type of redundancy to add back in may be adapted over time based, for example, on observations of the efficiency of the overall system.
摘要翻译： 将擦除编码与重复数据消除相结合的示例性设备和方法可同时减少数据的总体冗余，同时增加唯一数据的冗余度。 在一个实施例中，通过重复数据消除产生数据集的有效表示。 有效的表示可以减少数据集中的重复数据。 然后使用擦除编码将冗余加回到数据集中。 添加的冗余增加了与有效表示相关联的唯一数据的保护。 可以基于唯一数据的属性（例如，值，引用计数，符号大小，符号数量）来控制多少冗余被添加回来以及添加哪种类型的冗余。 例如，关于整个系统的效率的观察，可以根据时间来适应关于多少和什么类型的冗余的决定。
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公开(公告)号：US20230259278A1
公开(公告)日：2023-08-17
申请号：US18138016
申请日：2023-04-21
申请人： QUANTUM CORPORATION
IPC分类号： G06F3/06 , G06F12/126 , G06F12/0868
CPC分类号： G06F3/0607 , G06F12/126 , G06F12/0868 , G06F3/0661 , G06F3/0682 , G06F3/0686 , G06F2212/1016 , G06F2212/213 , G06F2212/222 , G06F2212/314
摘要： A method for implementing an object store using removable storage media includes the steps of receiving a request to retrieve first data; determining a first data object in which at least a portion of the first data is stored; determining a removable storage medium on which the first data object is stored, the removable storage medium including a value store partition into which one or more data objects including at least the first data object are stored and a key store partition into which one or more keys identifying the one or more data objects are stored; retrieving the first data object from the value store partition; and retrieving the at least a portion of the first data from the first data object. The method can further be performed using a data management system and/or one or more non-transitory computer-readable storage media.
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公开(公告)号：US11042299B2
公开(公告)日：2021-06-22
申请号：US15340691
申请日：2016-11-01
申请人： Quantum Corporation
IPC分类号： G06F3/06 , G06F12/00 , G06F12/126 , G06F12/0868
摘要： Embodiments disclosed herein provide systems, methods, and computer-readable media to implement an object store with removable storage media. In a particular embodiment, a method provides identifying first data for storage on a first removable storage medium and designating at least a portion of the first data to a first data object. The method further provides determining a first location where to store the first data object in a first value store partition of the first removable storage medium and writing the first data object to the first location. Also, the method provides writing a first key that identifies the first data object and indicates the first location to a first key store partition of the first removable storage medium.
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公开(公告)号：US10474571B2
公开(公告)日：2019-11-12
申请号：US15618723
申请日：2017-06-09
申请人： Quantum Corporation
发明人： Roderick B. Wideman , Don Doemer
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.
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公开(公告)号：US10318389B2
公开(公告)日：2019-06-11
申请号：US15211208
申请日：2016-07-15
申请人： Quantum Corporation
摘要： Methods and apparatus deduplicate and erasure code a message in a data storage system. One example apparatus includes a first chunking circuit that generates a set of data chunks from a message, an outer precoding circuit that generates a set of precoded data chunks and a set of parity symbols from the set of data chunks, a second chunking circuit that generates a set of chunked parity symbols from the set of parity symbols, a deduplication circuit that generates a set of deduplicated data chunks by deduplicating the set of precoded chunks or the set of chunked parity symbols, an unequal error protection (UEP) circuit that generates an encoded message from the set of deduplicated data chunks, and a storage circuit that controls the data storage system to store the set of deduplicated data chunks, the set of parity symbols, or the encoded message.
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公开(公告)号：US09876746B2
公开(公告)日：2018-01-23
申请号：US14515705
申请日：2014-10-16
申请人： Quantum Corporation
发明人： Roderick B. Wideman
CPC分类号： H04L51/16 , G06F17/30117 , H04L51/12
摘要： Example methods and apparatus associated with a messaging policy controlled email deduplication are provided. In one example a messaging policy is accessed. It is determined whether a received message complies with the policy based on rules of the messaging policy. If a message complies with the messaging policy, the message is displayed. If the message does not comply with the messaging policy, it is determined whether the message is duplicative. If the message is deemed duplicative it is not displayed. Conversely, if the message is not deemed duplicative it is displayed.
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