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A variable speed hard drive is meant to deliver reduced power consumption and conserve energy.
For example; when a user is in the middle of Surfing the net and/or working on a spreadsheet (i.e; Excel) and/or word processer (i.e Word); files requests from the hard drive (by the user) are virtually nonexistent.
However, while the user is merrily working away, the O/S is quietly working in the background and can sometimes request information from the hard disk in order to complete its task(s). Usually these requests will obtain very minute amounts of data and can probably be done in the same amount of time whether the hard drive is running at (say) 2000 rpm or 7200 rpm. Or, the task is not a high priority and therefore does not have to be completed right away. As such, instead of having to run at full rpm, the variable speed allows the hard drive to run at a slower speed; sufficiently providing the information in an appropriate time frame.
The power consumption is much less at lower speeds than when running at full speed; thus conserving energy.
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How do variable speed motors work?
A variable sped drive is sometimes also known as a variable frequency drive. These drives are used in electro-mechanical drive systems to control AC motor speed and torque.
What is the difference between Variable Speed Drive and Variable Frequency Drive?
A variable frequency drive (VFD) refers to AC drives only and a variable speed drive (VSD) refers to either AC Drives or DC Drives. VFD's vary the speed of an AC motor by varying the frequency to the motor. VSD's referring to DC motors vary the speed by varying the voltage to the motor.
Does the speed of a hard drive depends on RAM?
No, the speed of the hard drive depends on the rpms the hard drive runs at. RAM has nothing to do with it.
What's the difference between a variable frequency drive (VFD) and a variable speed drive (VSD)?
Adjustable speed drive (ASD) or variable-speed drive (VSD) describes equipment used to control the speed of machinery. Many industrial processes such as assembly lines must operate at different speeds for different products. Where process conditions demand adjustment of flow from a pump or fan, varying the speed of the drive may save energy compared with other techniques for flow control
Why is the hard drive speed important?
no
Speed control of a.c motor?
Use a variable Frequency Drive. Sold by ABB, Allen-Bradley, and many others.
What is meant by VFD?
A variable-frequency drive (VFD) is a system for controlling the speed of a rotational or linear alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor.[1][2][3] A variable frequency drive is a specific type of adjustable-speed drive. Variable-frequency drives are also known as adjustable-frequency drives (AFD), variable-speed drives (VSD), AC drives, microdrives or inverter drives.
Explain Speed mode torque mode in variable speed drives in detail?
Torque mode in variable speed drives is where the drive adjusts its torque according to the input. The speed/velocity mode is where the input is used to control the motor's RPM.
What is the speed of the hard drive?
I don't know, you tell me!
Does small 120 gig hard drive vs large 1 ter hard drive affect PC speed?
The capacity of the hard drive has no bearing on performance. The rotational speed of the drive, as well as the size of it's cache, however, do often have a noticeable impact.
Will raid 5 support different speed hard drive?
For Raid 5 all the hard drives have to be of the same speed.
How much is in a 40gb hard drive?
Only as fast as its CPU. Doesn't matter the size of the hard drive - the hard drive does not determine processor speed.
