公开(公告)号：US20210173579A1

公开(公告)日：2021-06-10

申请号：US17183045

申请日：2021-02-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yu LIN

IPC: G06F3/06

Abstract: A storage device obtains data access temperature of a first storage unit group The data access temperature of the first storage unit group is determined by data access temperature of each storage unit, and the data access temperature of each storage unit is determined by a logical unit in which the storage unit is located. When the data access temperature of the first storage unit group reaches a specified threshold, the storage device migrates data in the first storage unit group to a second storage unit group. Access performance of the second storage unit group is higher than access performance of the first storage unit group. Practicing the implementations of this application, accuracy of collecting statistics about data access temperature can be improved, thereby improving hierarchical storage performance of a storage device.

公开(公告)号：US20160283129A1

公开(公告)日：2016-09-29

申请号：US15173456

申请日：2016-06-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chen WANG ,  Yu LIN

IPC: G06F3/06

CPC classification number: G06F3/0605 ,  G06F3/061 ,  G06F3/0617 ,  G06F3/064 ,  G06F3/0649 ,  G06F3/0653 ,  G06F3/067 ,  G06F3/0685

Abstract: A method, an apparatus, and a system for calculating a identification threshold to distinguish cold data and hot data. The method includes: obtaining, according to a total capacity of hot data storage mediums, a size of data blocks, and the IO count statistical values on all the storage nodes and when the hot data storage mediums are filled with the data blocks corresponding to large IO count statistical values, a minimum IO count value in a count range corresponding to a minimum IO count statistical value in the large IO count statistical value, and using the minimum IO count value as a identification threshold to distinguish cold data and hot data. In the present invention, all storage nodes in a storage system, independently but cooperatively, implement hierarchical data storage in the entire storage system.

Abstract translation: 一种用于计算识别阈值以区分冷数据和热数据的方法，装置和系统。 该方法包括：根据热数据存储介质的总容量，获得所有存储节点上的数据块的大小和IO计数统计值，并且当热数据存储介质被填充与大对应的数据块时 IO计数统计值，计数范围内的最小IO计数值对应于大IO计数统计值中的最小IO计数统计值，并使用最小IO计数值作为识别阈值来区分冷数据和热数据。 在本发明中，存储系统中的所有存储节点独立地但协作地在整个存储系统中实现分级数据存储。