Storage system, storage management device, storage, hybrid storage device and storage management method
A storage system and storage management technology, applied in the fields of storage management devices and storage systems, can solve problems such as poor performance
Active Publication Date: 2017-01-11
HUAWEI TECH CO LTD +1
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Problems solved by technology
In this way, after a period of use, the performance of the SSD will also deteriorate due to operations such as garbage collection and block erasure.
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[0104] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0105] The memory in the embodiment of the present invention includes a plurality of physical blocks, new data can only be written by erasing the original data, and data is written in units of pages, and data is erased in units of physical blocks. The representative of this kind of memory It is an SSD memory, and the following embodiments take SSD as an example for illustration.
[0106] Such as figure 1 , is an architecture diagram of a system in which SSD is use...
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The invention provides a storage system, a storage management device, a storage, a hybrid storage device and a storage management method. The storage system comprises the storage and a manager; the storage comprises a plurality of physical blocks; the manager is used for receiving a data writing request, determining a logical block for a data page to be written, recording the logical address of the data page to be written in the logical block, and sending a data writing instruction to the storage; the data page to be written and the logical spatial information of the data page to be written are carried in the data writing instruction; and the storage is used for receiving the data writing instruction, obtaining information of the logical block through the logical spatial information of the data page to be written in the data writing instruction, determining the physical block corresponding to the logical block according to information of the logical block, and writing the data page to be written in the physical block corresponding to the logical block. By means of the storage system, the storage management device, the storage, the hybrid storage device and the storage management method provided by the invention, works of a flash translation layer of the storage can be reduced; and thus, the performance of the storage is improved.
Description
technical field [0001] The invention relates to the technical field of storage, in particular to a storage system, a storage management device, a memory, a hybrid storage device and a storage management method. Background technique [0002] Solid state memory (Solid state disk, SSD) has the advantages of high performance, low latency, low power consumption, and strong environmental adaptability. At the same time, the cost is also decreasing. Therefore, it is more and more widely used at present. It is generally used as a hard disk cache. It can also be directly used as a hard disk. [0003] However, since the SSD cannot be written in place, new data can only be written after the original data is erased, and the unit of data writing is page (for example, 4kb), while the unit of data erasure is block (for example, 1024KB). The working principle is different from that of disk storage, so it is necessary to use a flash translation layer (Flash translation layer, FTL), so that t...
Claims
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Login to View More IPC IPC(8): G06F12/02G06F3/06
CPCG06F12/00
Inventor 张子刚熊劲蒋德钧
Owner HUAWEI TECH CO LTD