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To optimize storage costs, cold data can be stored on lower performing and less expensive storage media. [2] For example, solid state disks may be used for storing hot data, while cold data can be moved to hard drives, optical discs, tapes, or migrated to cloud storage. [3] [4]
The term "failover", although probably in use by engineers much earlier, can be found in a 1962 declassified NASA report. [2] The term "switchover" can be found in the 1950s [3] when describing '"Hot" and "Cold" Standby Systems', with the current meaning of immediate switchover to a running system (hot) and delayed switchover to a system that needs starting (cold).
The hot spare disk reduces the mean time to recovery (MTTR) for the RAID redundancy group, thus reducing the probability of a second disk failure and the resultant data loss that would occur in any singly redundant RAID (e.g., RAID-1, RAID-5, RAID-10). Typically, a hot spare is available to replace a number of different disks and systems ...
2B1Q—2 binary 1 quaternary; 2FA—Two-factor authentication; 2GL—second-generation programming language; 2NF—second normal form; 3GL—third-generation programming language; 3GPP—3rd Generation Partnership Project – 3G comms; 3GPP2—3rd Generation Partnership Project 2; 3NF—third normal form; 386—Intel 80386 processor; 486 ...
A 2.5-inch solid-state drive that can be used in laptops and desktop computers static random-access memory (SRAM) A type of semiconductor memory that uses bistable latching circuitry to store each bit. The term static differentiates it from DRAM, which must be periodically refreshed. sound card. Also audio card.
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Cryptocurrency was the single hottest investment story of the 2010s. Through most of the 2000s, it didn't exist. Now, it's hard to get through a single week without a new digital currency making...
the process of copying the contents of one computer hard disk to another disk or to an image file (see disk image below) for later recovery. Disk image single file or storage device containing the complete contents and structure representing a data storage medium or device, such as a hard drive, tape drive, floppy disk, CD/DVD/BD, or USB flash ...