disk access


Also found in: Dictionary, Thesaurus, Financial.
Related to disk access: Disk access time

disk access

Reading and writing a magnetic disk or optical disc. The most time-consuming part of the operation is moving the read/write head. The access time is the average of the time it takes to position the head over the requested track. See defragment and access time.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
Local cache misses that hit in the server cache avoid expensive disk accesses.
--the assumption that a random disk access will be required for each record identifier for each term, as if inverted lists were stored as a linked list on disk (They should be stored contiguously or at the very least in a linked list of blocks.);
The speed of the individual work stations will play a role, the power of the file server's processor and its clock speed, together with the speed of hard disk access are all important factors when considering the hardware.
They include: (1) the inability to use disk caching routines such as SmartDrive, which really slows disk access; (2) much slower disk defragmenting - over an hour to defrag a compacted disk vs.
Norton Utilities are true 32-bit applications that can exploit the advanced capabilities of the Win95 32-bit operating system, such as multithreading and 32-bit disk access. Win95 disk utilities, on the other hand, are 16-bit applications, which can hinder the system.
Running Speed Disk keeps the hard disk access time from slowing down by correcting the file fragmentation that occurs with use.
DOS keeps track of where everything is located, but one result is to slow disk access time considerably.
Speeding transmissions and disk access time, compression creates smaller files, yielding the equivalent of 20 to 50 times more color image storage capacity than with uncompressed image data, according to Nikon.
Ideally, he says, laptop software should only require disk access when the program loads or when the user saves data.
Then the time elapsed for each activity such as processing, disk access, etc., is plugged into the formula in order to determine cost per unit of service provided.
CACHING AND OTHER DISK ACCESS AVOIDANCE TECHNIQUES ON PERSONAL COMPUTERS Disk caching is a technique for keeping the most recently used disk blocks in an associative memory in main storage, with the expectation that those blocks will be used again in the near future.