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

Can the size of an array be declared at runtime, Can the size of an array b...

Can the size of an array be declared at runtime?              No, the size of an array can't be declared at run time, we always require to mention the dimensions of an array at

Analysts in various functional areas, Q. Analysts in various functional are...

Q. Analysts in various functional areas? Today systems analyst's job presents a exciting and fascinating challenge. It provides high management visibility and opportunities for

Why floating point numbe process than integer, Why floating point number mo...

Why floating point number more difficult to represent and process than integer? In floating point numbers we have to show any number in three fields sign, exponent and mantissa

How does computer know that overflow has happened, Q. How does computer kno...

Q. How does computer know that overflow has happened? Illustration: Add numbers 65 and 75 in 8 bit register in signed 2's complement notation.  Here expected result is

Binary search tree in the descending order, In order to get the information...

In order to get the information kept in a Binary Search Tree in the descending order, one should traverse it in which of the following order?    Right, Root, Left

Weighted harmonic mean and geometric mean, Problem Show which of the w...

Problem Show which of the weighted arithmetic mean, geometric mean or harmonic mean, you would use in each of the following case. Justify your answer in each case. (a)

Explain the term recursion, Explain the term recursion A recursive functi...

Explain the term recursion A recursive function is one which calls itself. Recursive functions are useful in evaluating certain types of mathematical function. Here is a recursiv

What is the efi shell?, The EFI community has formed an open source shell e...

The EFI community has formed an open source shell environment. Rather than booting directly into a full OS, on some executions, the user can boot to the EFI shell. The shell is an

Definition of a micro controllers, Before we take a detailed look about the...

Before we take a detailed look about the Motorola 68HC11 series of micro controllers it is useful to define what is meant by a micro controller. As the name suggests a micro contro

What is jmx architecture, JMX is based on a 3-level architecture:   ?...

JMX is based on a 3-level architecture:   ? The Probe level have the probes (known as MBeans) instrumenting the resources. Also known as the Instrumentation level. ? The A

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