Error handling in hard disk, Computer Engineering

Assignment Help:

Error handling in Hard disk in computer architecture:

Modern drives also make widespread use of Error Correcting Codes (ECCs), specifically Reed-Solomon error correction. These techniques store additional bits for each block of data that are resolute by mathematical formulas. The extra bits permit many errors to be fixed. Whereas these additional bits occupy space on the hard drive, they permit higher recording densities to be employed, resulting in much higher storage capacity for user data. In the year 2009, in the newest drives, low-density parity-check codes (LDPC) are supplanting Reed-Solomon. LDPC codes are able performance near to the Shannon Limit and therefore allow for the highest storage density available.

Typical hard drives effort to "remap" the data in a physical sector that will be bad to a spare physical sector-hopefully whilst the number of errors in that bad sector is still little enough that the E CC can fully recover the data without loss.

 

 


Related Discussions:- Error handling in hard disk

How can we use metropolitan area network, Q. How can we use Metropolitan Ar...

Q. How can we use Metropolitan Area Network? A MAN, essentially a bigger versions of a LAN is designed to extend over an entire city. It may be single network like a cable tele

How blocking and non blocking statements get executed, How blocking and non...

How blocking and non blocking statements get executed? Execution of blocking assignments can be viewed just like a one-step process: 1. Evaluate RHS (right-hand side equatio

What are the user interfaces of interactive lists, What are the user interf...

What are the user interfaces of interactive lists? If you require the user to communicate with the system during list display, the list must be interactive.  You can describe

Program accept decimal number and convert it into given base, Q Develop a p...

Q Develop a program that accepts decimal number and converts it into given base. Fractional numbers are allowed and negative numbers are not allowed. Also check that entered number

Draw and elucidate the block diagram 8259, Draw and elucidate the block dia...

Draw and elucidate the block diagram of programmable interrupt controller 8259. The 8259A adds 8 vectored priority encoded interrupts to microprocessor. It can be expanded to 6

Explain dos function call with one illustration, Explain DOS function call ...

Explain DOS function call with one illustration DOS function call In order to use DOS function calls, always place function number into register AH and load all other re

Develop a simple patient management system, In the first part of Assignment...

In the first part of Assignment 2A you will develop a simple Patient class, representing an Patient who is to be admitted for a minor procedure that only requires a 1-2 day stay in

Analysts in computer operations, Q. Analysts in Computer Operations? Co...

Q. Analysts in Computer Operations? Computer Operations: All of the shared computers comprising mainframes, minicomputers and other computers are put to operation and same is c

What is linq, It sets for Language Integrated Query. LINQ is collection of ...

It sets for Language Integrated Query. LINQ is collection of standard query operators that gives the query facilities into .NET framework language like C# , VB.NET.

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