What is this blog about? My name is Louis and I write about data: what services and resources there are for storing data and much more. Also, here you will learn how to save your data and not to lose it.
What is data storage?
Data storage is one of the most important trends in the development of computers, which appeared after the appearance of non-volatile storage devices. Data storage systems of different sizes are used everywhere: in banks, stores and enterprises. As the requirements to stored data grow, the complexity of data storage grows.
Storage usually refers to the writing of data to some data storage devices, with the purpose of their (the data) further use. Let’s omit the historical variants of storage organization, let’s consider in detail the classification of storage systems according to different criteria. I chose the following criteria for classification: by connection method, by type of media used, by form of data storage, by implementation.
According to the connection method there are the following options:
Internal. This includes the classic connection of disks in computers, data drives are installed directly in the same enclosure where they will be used. Typical buses for the connection – SATA, SAS, from the outdated – IDE, SCSI.
External. Drives are connected using some form of external bus, such as FC, SAS, IB, or high-speed network card.
According to the type of drives used it is possible to distinguish:
Disk drives. Extremely simple and probably the most common variant until now, hard disks are used as drives
Tape. Magnetic tape storage devices are used as drives. The most common application is to organize backups.
Flash. Solid state drives, also known as SSDs, are used as storage devices. The most promising and fastest way to organize storage, SSDs have virtually equaled the capacity of hard drives (sometimes larger). However, they are still more expensive to store.
Hybrid. Combining both hard drives and SSDs in the same system. They are an intermediate option, combining the advantages and disadvantages of disk and flash storage.
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