2.3. Solid-State Disk
This has switched around again. The Internet added another aspect to data volume. Databases have to service high-demand networks. Databases are constantly read from or written to by multiple sources across the network. Lots of fast main storage and high-speed disks are helpful, but demand is growing even faster.
According to StorageReview.com, the fastest hard disk drives have peak access times of ~5 milliseconds. Solid-state disks have a 15-microsecond access time, or ~250 times faster than hard disk drives. The solid-state disk needs backup batteries to persist data in RAM, but battery technology has also improved. It is also not a huge power demand. For absolute safety, the data in the solid disk can be moved to permanent ...
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