What is small computer systems interface, Computer Engineering

Assignment Help:

Q. What is Small Computer Systems Interface?

The other well-liked way is to connect a disk drive to a PC by a SCSI interface. Common drive choice for high-end workstations or servers with drive capacities varies from 100MB to 20GB and rotation speed 7200RPM. It is a ordinary I/O interface between adapter and disk drives or any other peripheral it implies that CD-ROMs drives, tape drives, printers etc. 

SCSI (pronounced 'scuzzy') is an important and interesting variation of separate device controller idea for each device. It employs a generic device controller (known as SCSI controller) on computer system and permits any device with an SCSI interface to be directly associated to SCSI bus of SCSI controller. SCSI interface of a device comprises all circuitry that device needs to operate with computer system.

As shown in Figure below a SCSI controller connects directly to computer bus on one side and controls another bus (known as SCSI bus) on other side. Because SCSI controller is connected to computer's bus on one side and to SCSI bus on other side it can be communicated with processor and memory and can also control devices associated to SCSI bus. SCSI bus is a bus designed for associating devices to a computer in a uniform way.  

These drives have fast access time and high data rates however are expensive. One benefit of these drives is that a single SCSI controller can communicate concurrently with up to seven 16-bit SCSI devices or up to 15 wide or Ultra-Wide devices. Every device should be assigned a unique SCSI identification between 0 and 7 (or 15).

593_What is Small Computer Systems Interface.png

Figure: SCSI Drive Interface Standards


Related Discussions:- What is small computer systems interface

What is a pipeline hazard, What is a pipeline hazard? Any condition tha...

What is a pipeline hazard? Any condition that causes the pipeline to stall is known as hazard. They are also known as stalls or bubbles.

What does formal verification mean, What does formal verification mean? ...

What does formal verification mean? Formal verification uses Mathematical techniques by proving the design by assertions or properties. Correctness of the design can be achiev

Advantages and disadvantages of public key cryptography, What are the advan...

What are the advantages and disadvantages of public key cryptography? Advantages and Disadvantages: Improved security and convenience: private keys never require be trans

What do you mean by term procedure, What do you mean by term procedure? Dif...

What do you mean by term procedure? Differentiate between far call and near call? PROC: PROC and ENDP directives indicate the start and end of a procedure. These directives for

How to correctly apply the graphics patches in matlab, Open a LOCAL MACHINE...

Open a LOCAL MACHINE window and type: xhost +ashland # Add the following code sequence just before the plot command that was giving you problems: figure; set(gcf,'renderer','zbuffe

Differentiate b/w wml-script & web-based scripting language, Differentiate ...

Differentiate between WML-Script and Web-based scripting languages. WML Script is a lightweight procedural scripting language, optimized for small-memory, low-power CPU wireles

Volatility of memory - computer architecture, Volatility of memory: ...

Volatility of memory: Non-volatile memory will received the stored information even if it is not continually supplied with electric power. It is appropriate for long-term

What are set up time & hold time constraints, What do they signify Which on...

What do they signify Which one is critical for calculating maximum clock frequency of a circuit? Ans) Set up time constraint implies how late the input signal can arrive befor

When recursion functions are declared inline, Describe what happens when re...

Describe what happens when recursion functions are declared inline? Ans) Inline functions property says whenever it will call; it will copy the whole definition of that functi

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd