Dell Products Inc.

Emc IP Holding Company LLC

Zheng Sheng Environmental Technology Co., Ltd.

Jian Kang

Weilan Pu

Chi Chen

Hongyuan Zeng

Mingyi Luo

Ruiyang Zhang

Jie Wang

Chenglin Li

Xiaojie Zhang

Lingfeng Gan

Yuandong Wang

Wen Chen

An information handling system acquires data chunks for a duration of at least one time slice, determines an overwrite frequency for the duration of the time slice of each of the data chunks, clusters the data chunks according to the overwrite frequency, and determines an overwrite frequency label for each cluster of the data chunks. The system may also determine a read frequency for the duration of the time slice of each of the data chunks, cluster the data chunks based on the read frequency, and determine a read frequency label for each of the cluster of the data chunks. The system may also construct a sorted tree based on the overwrite frequency label, the read frequency label, and a virtual logical block address of each of the data chunks.

Update-correlations based overwrite mechanism

Techniques for managing data patterns involve: acquiring multiple sets of data patterns respectively associated with multiple collection devices, wherein a set of data patterns in the multiple sets of data patterns represent patterns of duplicate data in data from one of the multiple collection devices; dividing the multiple collection devices into multiple groups based on clusters of the multiple sets of data patterns; and determining, based on sets of data patterns associated with collection devices in a group in the multiple groups, a set of shared data patterns for sharing among the collection devices in the group. Accordingly, data patterns that can be shared among multiple collection devices can be determined in a more accurate and effective manner, thereby facilitating the removal of duplicate data from the multiple collection devices.

Method, device, and program product for managing data pattern

An apparatus comprises at least one processing device configured to collect, from a plurality of storage systems, data patterns for data stored in the plurality of storage systems and to cluster the plurality of storage systems into one or more data pattern sharing clusters based at least in part on the collected data patterns, a given one of the one or more data pattern sharing clusters comprising two or more of the plurality of storage systems. The at least one processing device is also configured to identify, for the given data pattern sharing cluster, a subset of the collected data patterns and to provide, to the two or more storage systems of the given data pattern sharing cluster, the identified subset of the data patterns, wherein the identified subset of the collected data patterns are utilized by the two or more storage systems in performing data deduplication.

Clustering storage systems for sharing of data patterns used for deduplication

Techniques involve: acquiring a first source snapshot for a source storage object stored in a source storage device; determining first difference data between the first source snapshot and the source storage object or a second source snapshot for the source storage object, creation time of the first source snapshot being associated with creation time of the second source snapshot; and sending the first difference data to a destination storage device to enable the destination storage device to create a first destination snapshot for a destination storage object stored in the destination storage device based on the first difference data. Such techniques can migrate snapshots more efficiently to improve storage management efficiency.

Method, electronic device and computer program product for storage management

Embodiments of the present disclosure provide a diffusion muffling device, a diffusion resonance muffling device, a full-frequency diffusion muffling device, a muffling system for a ventilation channel, and a muffling method using the same, which include a plurality of diffusion muffling units disposed in the ventilation extension direction of the ventilation channel, wherein the plurality of diffusion muffling units are arranged in parallel in a direction with a predetermined angle between the direction and the ventilation extension direction of the ventilation channel, and a muffling passage is formed between each two adjacent diffusion muffling units, wherein each of the diffusion muffling units includes at least one diffuser, and each diffuser includes a plurality of convex portions so that sound waves entering the muffling passage are reflected multiple times in the muffling passage by the plurality of convex portions and then sound is attenuated. In the present disclosure, the diffusers are disposed to diffuse and reflect sound waves, so that the sound is attenuated in a long and narrow passage by multiple times of reflections of the sound waves, thereby improving the low-frequency sound muffling performance in the ventilation channel so as to effectively achieve an effect of sound muffling and noise reduction in ventilation.

Diffusion muffling device, diffusion resonance muffling device, full-frequency diffusion muffling device, muffling system for ventilation channel, and muffling method using the same

A shared storage dynamic user quota system includes a storage management device coupled to a storage system having a shared storage space. The storage management device receives a data storage request from a user device to store data in the shared storage space. If the storage management device determines that the storage of the data in the shared storage space will exceed a user storage quota for a user associated with the user device, it determines whether the user qualifies to store the data in the shared storage space and exceed the user storage quota. In response to determining that the user qualifies to store the data in the shared storage space and exceed the user storage quota, the storage management device stored the data in the shared storage space.

Growing community of inventors

Chengdu, China

Jian Kang