2007-10-08 09:39:59 · 5 answers · asked by Muneel Mitesh Naicker 1 in Computers & Internet ➔ Hardware ➔ Other - Hardware
SCSI is a data bus, used by drives and other devices, including scanners and professional equipment. In general all SCSI devices are intelligent, with a controller to administer bus access. An important feature being "disconnect", where a device which is going to take time to respond can release the bus and then request access when ready. Multiple devices (7 in narrow, 15 in wide) and logical units (devices within devices) are supported. SCSI can also be run through external cables, but length is quite limited.
IDE is a simpler bus, the evolution of moving the drive controller onto the drive hardware. It supports only two drives per cable, and requires short cables. Without proper bus arbitration, the use of two drives on one cable can result in contention and blocking. The main plus point of IDE is cheapness.
2007-10-08 10:02:28 · answer #1 · answered by theradioham 7 · 0⤊ 0⤋
Basically the hardware is close to the same. It is the electronics and software protocol that is different. That is how the data is encoded on the drive and how the drive 'talks' to the controller and processor. IDE(Integrated Drive Electronics) has limited addressing normally only 2 devices per channel. SCSI (small computer system interface) will allow more than 2 per channel I have seen controllers that allowed up to 16 devices per channel. Also there are several flavors of each, such as SCSI-1, 2, 3 and Wide
SCSI and Ultra SCSI. Since the 'smarts' for SCSI is on the controller card you can have many SCSI controllers and channels not just 2.
2007-10-08 16:56:06 · answer #2 · answered by Wizard Of OS 4 · 0⤊ 0⤋
SCSI is a computer system information interchange standard that was used for many different type of computer peripherals including hard drives. SCSI was also used to interface one computer to another.
IDE is a data exchange typically used for hard drives and other large data transfer media including CD's & DVD drives.
Differences between SCSI and IDE would be massive at the electrical interface and even the data 'handshaking' and data blocking at the intermediate interface levels, all requiring completely different electronics, drivers, and system support within the computer system hosting the device.
They are not interchangeable except in the top level operation of providing or exchanging data.
2007-10-08 16:58:33 · answer #3 · answered by Goofy_Brained 1 · 0⤊ 0⤋
scsi is faster than ide and is harder to set up cant rember the data transfer speeds but scsi devices have to be run on a "chain" and terminated at both ends of the chain but ide is much simpler to set up
2007-10-08 16:44:47 · answer #4 · answered by steolav 2 · 0⤊ 1⤋
Different technology, like a 4 cylinder car and a V12, they both do same job, but they do it totally differently and the performance is totally different.
2007-10-08 16:43:14 · answer #5 · answered by Cupcake 7 · 1⤊ 0⤋