l$.$ Disk operation

For a $7200$ RPM disk, assume $5ms$ average seek time and $128M\frac{B}{sec}$ band width; assume sector size is

$512B.$

a$)$ How long does it take to access $512$B of contiguous data on average? What is the average throughput

$($bytes per second$)$ if the user accesses $512$B for each I$/$O$?$ Assume the data is perfectly aligned on the

disk.

b$)$ How long does it take to access $1MB$ of contiguous data on average? What is the average throughput

$($bytes per second$)$ if the user accesses $1MB$ for each $\frac{\text{I}}{O}?$ Assume the data is perfectly aligned on the

disk.

c$)$ If the user expects his$/$her average throughput to reach $90\%$ of the disk max bandwidth, what is the

minimal size of his$/$her I$/$O$?$

d$)$ How long does it take to access $10$ bytes of contiguous data on average? Assume the $10$ bytes reside

in one sector.Disk operation

For a $7200$ RPM disk, assume $5$ms average seek time and $128$MB$/$sec bandwidth; assume sector size is

$512$B$.$

a$)$ How long does it take to access $512$B of contiguous data on average? What is the average throughput

$($bytes per second$)$ if the user accesses $512$B for each I$/$O$?$ Assume the data is perfectly aligned on the

disk.

b$)$ How long does it take to access $1$MB of contiguous data on average? What is the average throughput

$($bytes per second$)$ if the user accesses $1$MB for each I$/$O$?$ Assume the data is perfectly aligned on the

disk.

c$)$ If the user expects his$/$her average throughput to reach $90\%$ of the disk max bandwidth, what is the

minimal size of his$/$her I$/$O$?$

d$)$ How long does it take to access $10$ bytes of contiguous data on average? Assume the $10$ bytes reside

in one sector.