| 释义 |
RAM disk
Thesaurus| Noun | 1. | RAM disk - (computer science) a virtual drive that is created by setting aside part of the random-access memory to use as if it were a group of sectors; "access to a RAM disk is very fast but the data it contains is lost when the system is turned off"drive - (computer science) a device that writes data onto or reads data from a storage mediumRAM, random access memory, random memory, random-access memory, read/write memory - the most common computer memory which can be used by programs to perform necessary tasks while the computer is on; an integrated circuit memory chip allows information to be stored or accessed in any order and all storage locations are equally accessiblecomputer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structures |
RAM disk
RAM disk[′ram ‚disk] (computer science) RAM drive RAM disk (operating system, storage)A memory-resident program whichmimics a hard disk drive. It uses part of computer's RAMto store data which can be accessed as files. Unlike a realdisk drive, this drive forgets all stored data when thecomputer is turned off.RAM diskA disk drive simulated in memory. Also called a "virtual disk," "virtual hard drive" or "emulated disk" (e-disk), selected files are copied from the hard drive to the RAM disk in order to speed up processing. Before the computer is turned off, the data must be saved to the hard drive or other permanent medium. RAM disks for personal computers perform a similar function as huge in-memory databases used by enterprises for fast decision support. However, in-memory databases automatically allocate memory and must periodically write changes to permanent storage in case of hardware failure (see in-memory database).
RAM disks are also used to capture data that are intentionally not saved. When the computer is turned off, the RAM disk contents are lost.
RAM Disks vs. Disk Caches
RAM disks must be installed and configured by the user, whereas disk caches are part of the operating system. Disk caches hold chunks of disk data in memory that are frequently accessed, but they do not copy an entire file into memory for processing. See cache and SSD.
 | | Dataram's RAMDisk for Windows |
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| A very popular utility, RAMDisk can also save and reload its contents at shutdown and startup. RAMDisk formats in FAT16 and FAT32. If the user requires NTFS, the Unformatted option simulates a raw hard drive as if it were newly installed, and it must be formatted with a disk management utility. The drive list is shown before and after the RAM disk was started. |
MedicalSeecacheRAM disk
Words related to RAM disknoun (computer science) a virtual drive that is created by setting aside part of the random-access memory to use as if it were a group of sectorsRelated Words- drive
- RAM
- random access memory
- random memory
- random-access memory
- read/write memory
- computer science
- computing
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