What are the three advantages of using SCSI over IDE?

Answer 1

SCSI can handle a wide variety of devices: hard drives,scanners,plotters etc...

Answer 2

compared to IDE and other buses, SCSI has the capability to 'disconnect' devices while they are working, thus freeing the bus for other devices.

So you can have up to 8 devices on a SCSI bus (OK, one typically is the controller); each time your system needs some data from a device, the controller sends the command to the device, then disconnects.

When the device has collected the data, it alerts back the controller, requesting the bus, and sending back the retrieved data.

In the meanwhile (after the command is sent, and before the answer is returned) the controller can handle other requests and answers from and to other devices on the same bus.

So SCSI is much more efficient than IDE, but only if you connect more than one device, and the more devices connect the more it is efficient (provided that you distribute your data in order to request accesses to more than one device, obviously!)

On the other hand, SCSI is more complex, so it is more expensive.

Answer 3

Advantages

• Faster performance than SATA or IDE
• Multiple devices can be daisy-chained together on a single controller (up to 16)

Disadvantages

• SCSI drives and hardware cost more than SATA or IDE
• Older models could be difficult to configure correctly, since each device needed a special ID number and proper termination.
  

Answer 4

SCSI, or Small Computer Serial Interface, is simply a technology for connecting drives to a computer. It's a competing technology with ATA, IDE, and SATA with varying speeds within it's technology as well.

SCSI had a clear superiority over older PC technologies (ATA, IDE) for much of history, but there's no general advantage today.

SCSI does, however, allow you to connect many more devices to a single host than it's competitors, but at the cost of a single shared speed. Therefore, the more devices you connect, the more they're forced to share the same bandwidth.

Answer 5

They are faster

Answer 6

more faster than eide