Explain redundant array of independent disks levels, Computer Engineering

Assignment Help:

Q. Explain Redundant Array of Independent Disks levels?

One such industrial standard that exists for multiple-disk database schemes is called as RAID which implies Redundant Array of Independent Disks. The fundamental aspects of RAID disks are:

  • Operating system considers physical disks as a single logical drive.
  • Data is distributed across physical disks.
  • In case of failure of a disk redundant information (E.g. parity bit) kept on redundant disks is used to recover data.

754_RAID levels.png

601_RAID levels1.png

Figure: The RAID levels

The term RAID was invented by researchers at University of Berkley. In their paper meaning of RAID was Redundant Array of Inexpensive Disks. But later the term Independent was adopted in place of Inexpensive to signify performance and reliability gains.

RAID has been proposed at different levels that are fundamentally aimed to cater for widening gap between processor and on-line secondary storage technology.


Related Discussions:- Explain redundant array of independent disks levels

Dynamic cons, i want dynamic cons simple program in c++

i want dynamic cons simple program in c++

What is an orthogonal base class in c++, If two base classes have no overla...

If two base classes have no overlapping methods or data they are said to be independent of, or orthogonal to each other. Orthogonal in the sense means that two classes function in

What do you mean by digital computer, COMPUTER ORGANIZATION & ARCHITECTURE ...

COMPUTER ORGANIZATION & ARCHITECTURE 1. What do you mean by digital computer? Explain the block diagram of a digital computer. 2. What do you mean by Difference Engine? Expl

Maximum size of a database, What is the maximum size of a database that can...

What is the maximum size of a database that can be opened in Microsoft Access? Ans) 1 Gigabyte

What is "at exit-command", What is "at exit-command:? The flow logic K...

What is "at exit-command:? The flow logic Keyword at EXIT-COMMAND is a special addition to the MODULE statement in the Flow Logic .AT EXIT-COMMAND lets you call a module befor

State the drawbacks of laptop as compared to PC, State the drawbacks of lap...

State the drawbacks of laptop compared to PC The main disadvantages of laptops compared to desk top PCs are: -  They tend to be more expensive to purchase -  It's easie

Python, When investing money, an important concept to know is compound inte...

When investing money, an important concept to know is compound interest. The equation FV = PV (1+rate)periods . This relates the following four quantities. The present value (PV)

How to insert script in dreamweaver, Q. How to insert script in dreamweaver...

Q. How to insert script in dreamweaver? Step 1: Click on Insert Step 2: Click on Script Step 3: Choose the type of Script Step 4: Write the code in "Content" Step 5: T

What are program-invisible registers, What are program-invisible registers?...

What are program-invisible registers? Ans: the local and global descriptor tables are found in the memory system. To access and specify the address of these tables, program inv

Explain transport layer of osi model, Explain Transport Layer of OSI Mode...

Explain Transport Layer of OSI Model. The transport layer utilizes the services provided through the network layer, as best path selection and logical addressing, to give end

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