Pre-reading file containers storing unread file segments and segments that do not belong to the file

A file storage device configured to store a file, wherein the storage device comprises:

• a processor;
• a first storage medium;
• and
• a cache,
• wherein an access speed of the cache is greater than that of the first storage medium,
• wherein each container is divided into a plurality of chunks,
• wherein the first storage medium has a plurality of containers,
• wherein each container divided into a plurality of chunks,
• wherein the file comprises a plurality of file segments, and
• wherein the processor is configured to:
• receive a first read request sent by a client, wherein to-be-read data requested by the first read request s a part of the file;
• read, from the cache, data that is of the to-be-read data and located in the cache;
• read, from the first storage medium, data that is of the to-be-read data and not located in the cache;
• pre-read, from the first storage medium, all data of at least one container, wherein the pre-read container stores unread file segments belonging to the file and segments that do not belong to the file, and wherein the number of the unread file segments belonging to the file is greater than a threshold;
• and
• store the pre-read data into the cache.

A file reading system comprising:

• a user equipment;
• and
• a file storage device, wherein the user equipment is configured to:
• receive an original file restoration request from a user;
• generate a plurality of read requests according to the original file restoration request;
• and
• send the read request to the storage device, wherein the storage device is configured to store a file, wherein the storage device comprises a first storage medium and a cache, wherein an access speed of the cache is greater than that of the first storage medium, wherein the first storage medium has a plurality of containers, wherein each container is divided into a plurality of chunks, wherein the file comprises a plurality of file segments, wherein one chunk stores one file segment, wherein the storage device further comprises a processor, and wherein the processor is configured to:
• receive a first read request sent by a client, wherein to-be-read data requested by the first read request is a part of the file;
• read, from the cache, data that is of the to-be-read data and located in the cache;
• read, from the first storage medium, data that is of the to-be-read data and not located in the cache;
• pre-read, from the first storage medium, all data of at least one container, wherein the pre-read container stores unread file segments belonging to the file and segments that do not belong to the file;
• and
• store the pre-read data into the cache.