TipTop Business Web Directories - Add your sites link starting at £1

If you can see this, your browser doesn't understand IFRAME. However, you can click <A HREF="http://www.tiptopweb.info/newsbar/news_bar.php">here</A> to see the news.

Home | Computers And Technology | Data Recovery

Raid importance in linux

By: Mahendra

Raid stands for Redundant Array of Inexpensive Disk. It combines multiple small disks into a single logical store unit. Its performance is more than that of Single Large expensive drive (SLED).

For Raid

MTBF of Array = MTBF of individual drive/ Total no of drive in array

Therefore in Raid Mean time between failures (MTBF) is less as compared to SLED.Raid helps in achieving redundancy, low latency, higher bandwidth for reading and writing. It also helps recovery at the time of hard-disk crash.

Raid offers different level. They are as fallows:

1. Raid - 0
It has more improved performance and data storage capacity but is not redundant.
Therefore failure of any disk results in data lost. It is also called “striping”.

2. Raid - 1
It provides redundancy by writing all data in two disks. The speed of accessing data becomes faster. But the array capacity is equal to the capacity of one member disk. Therefore it is more expensive. This also referred as “Mirroring”.

3. Raid -2
It uses Hamming error correction code correction.

4. Raid -3
It strips data at byte level across several drives with parity stored on one drive.

5. Raid -4
It stripes data at block level from several drives with parity stored on one drive.
The speed of reading data is fast enough but for writing it is slow. Since writing requires the parity data be updated each time.

6. Raid-5
It distributes the parity among all drives. If the drive fails need replacement but the array is not destroyed by the single disk failure.

7. Raid-6
It is stripped with dual parity. If two drives fail the array continues the operation.
It provides more safety of data.

There are two types of raid solution in Linux:

1. Software Raid Solution:
It offers cheaper raid solution not only for expensive disk controller cards but also works with cheaper IDE disks as well as SCSI disks. There are two Linux software RAID implementation: MD (multi-disk) driver and the EVMS driver.

2. Hardware Raid Solution
The hardware-based system manages the RAID subsystem independently from the host and presents to the host only a single disk per RAID array.

If anyhow you lost your Linux file you are not able to recover it. You become very much frustrated you don’t know what to do .You can use Linux recovery software. It helps you to recover your ext2, ext3 and Resier Linux file without any extra efforts. Stellar Phoenix Linux data recovery provides you the complete solution for your lost data.

Article Source: http://articles.tiptopweb.info

Stellar Phoenix Linux data recovery is the most effective and robust data recovery software. You can use it to recover your lost Linux hard drive volumes and data. It provides complete Linux recovery solution

Please Rate this Article

Not yet Rated

Click the XML Icon Above to Receive Data Recovery Articles Via RSS!

Additional Articles From - Home | Computers And Technology | Data Recovery

Business
Investments
Finance
Real Estate
Home Business
Wealth Building

Food and Drink
Health
Fashion
Recreation
Travel

	Print This Article
	Post Comment
	Add To Favorites
	Email to Friends
	Ezine Ready

Submit Articles
Member Login
Top Authors
Submission Guidelines
Ezine Notifications
Article RSS Feeds

About Us
Link to Us
Contact Us
Privacy Policy
Terms of Service

Vote For Tiptop Web Aritcles Directory - http://www.articles.tiptopweb.info
at Top Article Directory List
Top List

Raid importance in linux addthis_pub = 'ex_plo_rer';

Raid importance in linux