Hybrid disk drives are hard-disk systems that combine magnetic storage with a smaller amount of flash memory, which is used as a cache for frequently accessed data.

Related MCQs

•                      is increasingly being used in server systems to improve performance by caching frequently used data, since it provides faster access than disk, with larger storage capacity than main memory.
• Optical disk                systems contain a few drives and numerous disks that can be loaded into one of the drives automatically (by a robot arm) on demand.
• The magnetic storage chip used to provide non-volatile direct access storage of data and that have no moving parts are known as
• The primary medium for the long-term online storage of data is the                       where the entire database is stored on magnetic disk.
• In magnetic disk                  stores information on a sector magnetically as reversals of the direction of magnetization of the magnetic material.
• The                is that part of main memory available for storage of copies of disk blocks.
•                              policy allows multiple updates to accumulate on a block before it is output to stable storage, which can reduce the number of output operations greatly for frequently updated blocks.
• There are “record-once” versions of the compact disk and digital video disk, which can be written only once; such disks are also called                      disks.
• The disk controller uses                  at each sector to ensure that the data is not corrupted on data retrieval.
•                              partitions data and parity among all N+1 disks, instead of storing data in N-disks and parity in one disk.