"Big Talk Storage 2" reading notes--the 1th chapter of Chaos opening storage world's past life

Information

The so-called "material" or "non-material" or, finally, through the "information" to express. The only certainty is that "information" is an objective reality, the world in the biological eye is "information", the world through "information" to reflect, separated from the "information", the world is nothing. Any "substance" is actually a "message" of expression, as long as "information" exists, the world exists.

Data

"Information" is so important. If the "material" is lost, only the objective fades away, but if the "information" is lost, then everything is gone. To preserve this logical stimulus, what is needed is a descriptive message that is "data"

File System

The code block of the operating system that manages the data on the disk

The code itself is also information and is stored on disk. This code implements the "Manage data on disk" feature by reading some cryptic information. These mysterious messages are "file system metadata".

File system metadata: The data that describes the structure of the file system, which is also stored on disk .

In summary: use a file to describe the file, use the data to describe the data

Networked Storage

The traditional practice of putting a hard drive into a computer's mainframe has not been enough to meet the demands of modern applications for storage capacity, which has spawned networked storage technology.

Networked storage is the expansion of a storage system onto a network, which is a node on the network for other nodes to access. This way, even if there is only one hard disk in the computer and no hard disk, the computer can access the data on the storage device through the network. Networked storage technology focuses on how to provide data flow services to other nodes on the network. Based on networked storage, it also enables many other related technologies to be popularized and applied, eg: "Disaster recovery technology for IT systems"

"Big Talk Storage 2" reading notes--the 1th chapter of Chaos opening storage world's past life