Computer Science - Computer Fundamentals - Discussion
Discussion Forum : Computer Fundamentals - Section 1 (Q.No. 6)
6.
The tracks on a disk which can be accessed without repositioning the R/W heads is
Discussion:
29 comments Page 1 of 3.
Ayushi said:
3 years ago
The cylinder can be defined as a division of disk drive data and it is used in the 'Fixed block architecture' of the disk. Here the 'number of cylinders' equals the 'number of tracks'.
(1)
Vidhu said:
7 years ago
R/W means Read/Write.
(3)
Loaraju said:
7 years ago
What is R/W?
(1)
Prakash said:
7 years ago
The technology is used in a magnetic disk, where the read and write operation function on track and the tracks is the collection of multiple segments where the data are stored.
Sowmya said:
8 years ago
Set of tracks (group of disks) that can be read without repositioning of r/w heads. So the correct answer is the cylinder.
Samuel said:
8 years ago
Track - Circular portion that passes under read and writes head as the disk rotates.
Sectors - Each track is divided into sectors with fixed number of bytes.
Cluster - Fixed number of sectors treated as one unit for storage by the operating system.
Cylinder- recording of data vertically reduces access arm movement.
Sectors - Each track is divided into sectors with fixed number of bytes.
Cluster - Fixed number of sectors treated as one unit for storage by the operating system.
Cylinder- recording of data vertically reduces access arm movement.
(1)
V.viswanath sai vara pra sad reddy said:
10 years ago
Cylinder is nothing but a group of disk, it is rotating we need to do rewrite access the data r/w means rewrite.
Ehsan Tareen said:
10 years ago
What is the definition of cylinder?
Akshay K said:
10 years ago
How we can find the 1's complement?
Pushpa said:
10 years ago
Cylinder is the right answer.
Tracks and Cylinders. The idea of a cylinder is an artifact of the mechanical nature of the actuators used to move the read/write heads on a modern disk. It is faster to read sectors from the same track than it is to move to another track, even one close by. We now consider the fact that standard disk drives with concentric tracks and multiple recording surfaces have the same number of tracks and track geometry on each of the surfaces.
When the actuator is functioning properly, as it almost always is, each read/write head is over (or near to) the same numbered track on its disk. This leads to the idea of a cylinder as the set of tracks that can be read without significant repositioning of the read/write heads. In early disk designs, with wider tracks, there would be no positioning required to move from surface to surface on a cylinder. All that would be required was an electronic switching of the active head, a matter of nanoseconds and not milliseconds.
Tracks and Cylinders. The idea of a cylinder is an artifact of the mechanical nature of the actuators used to move the read/write heads on a modern disk. It is faster to read sectors from the same track than it is to move to another track, even one close by. We now consider the fact that standard disk drives with concentric tracks and multiple recording surfaces have the same number of tracks and track geometry on each of the surfaces.
When the actuator is functioning properly, as it almost always is, each read/write head is over (or near to) the same numbered track on its disk. This leads to the idea of a cylinder as the set of tracks that can be read without significant repositioning of the read/write heads. In early disk designs, with wider tracks, there would be no positioning required to move from surface to surface on a cylinder. All that would be required was an electronic switching of the active head, a matter of nanoseconds and not milliseconds.
(2)
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