Data storage device is disk, solid-state and tape storages are all different forms of persistence storage and non-volatile storage or secondary data storage methods.
1. Type of data storage options
You can store your data in one of the following data storage methods among any data storage device.
- Persistent storage : data does not loose it content when power is turned off. It is standard choice for long term data storage. E.g Tape , hard disk, flash memory
- Non-Persistent storage: it looses data when power turned-off. Example of non-persistent storage as : static/dynamic RAM.
- Storage refers to persistent non-volatile storage, where memory refers to non-persistent storage.
2. Disk Drive Storage
when we talk about the disk, it’s refers to electro-mechanincal hard disk drive, sometimes we call it hard disk drive, sometimes hard disk , sometimes disk, and some times in abbreviate form HDD. So during this post I will keep exchanging these words.
You can know about your first hard disk capacity, size, the geometry of disk, etc in another post.
3. Solid-state storage
Solid-state storage is the new technologies that gain popularity due to any reason. This is based on flash memory technology. Mostly we use this in different forms.
The size of solid-state disk and hard disk drive are almost the same, however, you can say its geometry is not the same. If you know more level of knowledge you can visit our other post about Solid State Disk.
4. Tape Storage
Tape storage refers to magnetic tape storage. tape storage is more than 50 years older and matured technology and still has popularity in terms of usage for a different aspect.
Magnetic tape is used for sequential read workload and its objectives is to use for sequential read-only. what is the meaning of sequential read here? let us take an example here, you have a book but don’t have an index page and you have to search on a particular topic so you have to start from the first page in order to reach out on the particular page on a particular topic. Similarly in the magnetic tape, you have to read data from start in order to reach particular data.
You usually use magnetic tape for infrequent access data. What is infrequent usage of data, so you can use for backup and archival purpose. keep in your mind magnetic tape is not used for Transactional data, report data or OLTP or OLAP. Used for only backup and archival purpose.
Your comments are welcome to improve this post of different forms of data storage technologies. Happy Learning 🙂