Traditional Culture Encyclopedia - Traditional culture - Database can be divided into hard disk backup and tape backup according to backup media. What are their advantages and disadvantages?
Database can be divided into hard disk backup and tape backup according to backup media. What are their advantages and disadvantages?
Just think of the characteristics of the tape as the tape in the walkman.
Tape:
1. Random access is not allowed. If you want to access the middle segment, you must access it sequentially from the beginning. Obviously, the disk can directly locate any data.
2. The reading and writing speed of magnetic tape is much slower than that of hard disk. -It's obvious.
3. The price of hard disk is much higher than that of tape.
In short, the performance of hard disk is better than that of tape in all aspects, but the price of tape is far lower than that of hard disk, especially when there is a lot of data.
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