The item can be retrieved immediatley, provided the position of the file is known. This often means that the items must have a known lengh, so that software can calulate where in the file te required itme is located.
secodary
secodary
working of direct view storage tube
secodary
Direct - Attached Storage (DAS) functions as a digital storage system which is attached to a server but does not have a storage network. It is mainly used to show the difference between an NAS (Network Attached Storage) and DAS.
Direct access storage device
disk storage-> direct data access storage tape storage -> serial data access storage
Cooking, Music, Art, Sewing etc.
The three basic storage systems are direct attached storage (DAS), storage area network (SAN) and network attached storage (NAS).
optical
A direct view storage tube is used to display an image for a period of time after it was illuminated. They are used as a computer-display medium and have a high resolution.
The most common type of storage that does not use direct access is tape storage. Tape uses sequential access, that requires to start from the beginning of the tape and go through the tape until you find the section you need. Direct access includes a directory that will let you go directly to the data you need.