The physical location of the data becomes irrelevant. A unique identifier: This is a unique piece of information (usually 128 bits) that is tagged along to be able to find out this data over a distributed system.The metadata is made up of information that is contextual, i.e., what the data is all about, what it should be used for, any other information about how it is used to be used, and its confidentiality. Metadata: The metadata is created by the one who creates the object storage.They may also simply be a collection of bits and bytes that are related but nor part of any file. These may be complete files or parts of a file (sub-file). Data: The stored data is organized into objects.The units of data storage called objects consist of: Object storage or object-based storage refers to the data storage architecture that manages stored data in the form of objects and not as files. Many users appreciate the managed services provided by cloud operators. The cloud storage provider manages the devices and provides data backup too. Cloud storage uses devices located elsewhere and are connected using the Internet or other types of network connection. Cloud storage refers to the technology that uses data stored in a remote location.Their costs are now very competitive with the result that they are being used more in computers now. An SSD is advantageous in that it has no movable parts like the hard disk. Some computers have installed solid-state drives (SSD) in place of hard disks.These can be transferred to a computer using a reader that is connected through a USB port. Memory cards are used in digital cameras or mobile phones are also secondary storage devices.They are compact and connect with the help of a USB port. Flash drives also referred to as thumb drives are the most popular portable storage devices of today.With every new software or application that is being developed, the demand for storage is greater. The different types of optical memory are CD-ROM, DVD-ROM, CD-R/W, etc.The marked advantage that they have is the capability to store large amounts of data. Such a device is written onto and read from using a laser beam. Once these became cumbersome to use, storage device manufacturers started looking at optical storage devices.These devices used the principle of a read/write head magnetizing material that was coated on the disk to store information. Until a few years ago, floppy disks, magnetic tapes, and other magnetic media were used as secondary storage devices and were popular. These devices hold the stored data unless explicitly deleted or overwritten using instructions from the computer. These can be easily removed and stored elsewhere.
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