MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

OPERATING SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The spindle speed of a typical hard disk drive is
A
540 rpm.
B
1000 rpm.
C
7200 rpm.
D
28000 rpm.
Explanation: 

Detailed explanation-1: -A typical 7200 RPM HDD will deliver a read/write speed of 80-160MB/s. On the other hand, a standard SATA SSD will provide a read/write speed of between 200 MB/s to 550 MB/s.

Detailed explanation-2: -Spindle speed, measured in rotations per minute (RPM), is one metric used to gauge disk drive performance. Spindle speed can affect seek time, which is the speed at which a drive can locate a single bit of information, as well as the sustained rate at which data can be read from, or written to, a disk.

Detailed explanation-3: -A hard drive with a 5, 400 RPM will have a speed of around 100MBps. On the other hand, an HDD with 7, 200 RPM will have speeds of around 150MBps. An SSD, on the other hand, has no RPM to consider since it doesn’t have moving parts. With a SATA III connection, an SSD can read data at 550MPbs and write at 520MBps.

Detailed explanation-4: -Although 7200 RPM hard drives are faster than 5400 RPM drives, 5400 RPM drives offer an average of 100 MB/s read and write speeds, while 7200 RPM drives deliver an average of 120 MB/s read and write speeds.

Detailed explanation-5: -In 1992, Seagate introduced the first ever 7200-RPM spindle speed hard drive, the Barracuda 1, sold in capacity of 1.7 GB with a size of 3.5 inches. On July 24, 1995, Seagate has shipped over one million Barracuda hard drives.

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