Definition

Direct Memory Access

This article can also be found in the Premium Editorial Download: Storage magazine: Optimizing your enterprise database storage:
Direct Memory Access:
Direct Memory Access, or DMA, is a command set typically associated with the ATA/IDE disk drives that transfers data between a hard disk drive through the computer's bus, and on to main memory. It provides better performance than its predecessor, Programmed Input/Output, or PIO, since it can request data from multiple sectors without a handshake, explains Marc Noblitt, manager of I/O planning at Seagate. Current ATA disk drives typically ship with UltraDMA, which today provide burst data transfer rates of up to 100MB/s.
This was first published in November 2002

Dig deeper on Disk drives

Pro+

Features

Enjoy the benefits of Pro+ membership, learn more and join.

0 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

-ADS BY GOOGLE

SearchSolidStateStorage

SearchVirtualStorage

SearchCloudStorage

SearchDisasterRecovery

SearchDataBackup

Close