Question

What is the disk bandwidth? the total number of bytes transferred total time between the first request for service and the completion on the last transfer the total number of bytes transferred divided by the total time between the first request for service and the completion on the last transfer none of the mentioned

Answer 1

Answer:

(c) the total number of bytes transferred divided by the total time between the first request for service and the completion on the last transfer

Explanation:

disk bandwidth

• Disk read and write in bandwidth is strongly dependent on the size of the block.
• Disk read / write bandwidth on Commodity hardware varies from slower like 10 MB/s  to faster like 500 MB/s.

This difference can be represented by the following rules:

• Reading / writing big data is faster than reading / writing small blocks of data
• Writing is faster than reading
• Solid state drives are faster than spinning disks, especially for very small reads / rights

so we can say Disk bandwidth is the total number of bytes transferred divided by  the total time between the first request for service and the completion of the last transfer.