If you are looking for information on “describe the file storage system on disk”, then you are on the right track! Any data that is on the computer should be accessible during subsequent use. But how is such a mechanism implemented? Is it folded or not?
What is a file storage system?
A file storage system is understood to mean a software and hardware solution aimed at ensuring reliable storage of all information located. They can act as the main or additional part of the data center. This is how you can answer if you are given the task: “Describe the file storage system on disk.” In addition to a brief adage, there are even more complex points: protocols, types, technologies.Protocols
A number of developments are used as storage and data transfer protocols. Some in limited quantities, others are quite popular. Currently, iSCSI is being actively implemented, so the protocol will be described using its example. This technology aims to work through a conventional network infrastructure. Allows you to connect storage devices to workstations or servers for later use as if they were part of a computer. The advantages of such a protocol can be said:
- His work is cheap, if not free (conditionally).
- The software module of this protocol can work with all popular operating systems. In some, it is installed by default, in others it can be downloaded and added to the list of computer protocols yourself.
- Operation is possible immediately after the installation process is completed.
- Since this protocol uses an Internet address, it can transfer data to any place on the planet where there is coverage.
It has not only advantages, but also shortcomings. In general, he has only one significant drawback: binding to an Internet address and the impossibility of full functioning without it.
Types of systems
In the modern world, depending on the needs, 4 file storage systems are used:- DAS. By it is meant disks directly connected to a computer system. Everything that is directly connected to the computer used uses this system.
- NAS This system is familiar to lovers of local networks. It provides access to internal files and documents only to those devices that have been identified as "their own."
- SAN. , .
- CAS. , . , . , , – . , . , . , , .
Technologies used for data storage
Within the framework of the systems, there are many approaches to data storage that allow optimizing disk usage and making sure against unforeseen situations:
- Backup. Represents proactive creation of copies of information that may be deleted and which may be needed again. An important role is played by the file size. When fully backed up, it affects the entire system and files. With incremental copying, only a part is saved. The search is selected based on those that have changed since the last reservation. Typically, the saved data is drive C or a specially created storage for these purposes.
- . . , ( ). . , , . , . . . , , . - , . .
- . , . , . .
« ». .
It means storage of data that should not depend on the power supply of the system. It is also called non-volatile memory. In this sector, disk space is allocated for storing file names. This is necessary to search for stored information. It also stores all the "permanent" information that is retrieved by the user. Examples of data include work files, games, saved documents, folders. The information contained in it can be retrieved even after decades after recording and stopping the supply of electricity. An example is drive C, on which the operating system files are located. After all, how would it be if they were erased? Could a computer be started? No extra manipulation - no!RAM
, . , . , , , . , , , . , ( ).
-
. , . , , - . , , . , . . , , . . . - .
As you can see, the storage system is a rather complicated mechanism. It includes various protocols (of which only one was considered due to the huge amount of information), different types, organizational approaches and technologies, as well as memory. Now we can say that the answer to the request "describe the system for storing files on disk" is given.