PC Pages

Special Discount for PC-Pages Visitors
33% discount on ALL web design packages from VisualWorx
Just quote the following discount code PCG04

PC-Pages Home Link to PC-Pages UK Directory Computer Clubs Drivers Contact
Remote Control your PC via the Web with GoToMyPC Free Trial - Uleads Web, Image and Video Tools
Anti-Spam Tools
Mail Washer
Firewall &
Security Software
Zone Alarm
McAfee Firewall
Privacy Software
Lavasoft Adaware
Spyware Remover
Evidence Eliminator
Pest Patrol
Protect your website code with Kloakit
PC Help Pages

Hard Drive
Graphics Cards
Internet Explorer
Win 95/98/ME
Win 2000/NT
Win XP
Office XP
Outlook Express
Win XP Tips & Tricks
Price Compare
More Windows help
Underground, Security & Warez
Spyware & Malware
Adaware from Lavasoft
Evidence Eliminator
DVD MovieFactory 3
Driver Downloads
Video Card Drivers
Modem Drivers
Motherboard Drivers
Soundcard Drivers
Network Card Drivers
Ink Supplies
Epson Ink
HP Ink


3. What are the different levels of RAID?

Different Levels of RAID

RAID-0 This technique has striping but no redundancy of data. It offers the best performance but no fault-tolerance (i.e. if a drive fails you lose all your data).
RAID-1 This type is also known as disk mirroring and consists of at least two drives that duplicate the storage of data. There is no striping. Read performance is improved since either drive can be read at the same time. Write performance is the same as for single disk storage. RAID-1 provides the best performance and the best fault-tolerance in a multi-user system.
RAID-2 This type uses striping across disks with some disks storing error checking and correcting (ECC) information.
RAID-3 RAID level 3 stripes data across multiple drives, with an additional drive dedicated to parity, for error correction/recovery. RAID 3 is not found on all controllers.
RAID-4 This type uses large stripes, which means you can read records from any single drive. This allows you to take advantage of overlapped I/O for read operations. Since all write operations have to update the parity drive, no I/O overlapping is possible.
RAID-5 RAID level 5 is the most popular configuration, providing striping as well as parity for error recovery. In RAID 5, the parity block is distributed among the drives of the array, giving a more balanced access load across the drives. The parity information is used to recover the data if one drive fails, and is the main reason this method is the most popular.The disadvantage is a relatively slow write cycle.
RAID-6 This type is similar to RAID-5 but includes a second parity scheme that is distributed across different drives and thus offers extremely high fault- and drive-failure tolerance.
RAID-7 This type includes a real-time embedded operating system as a controller, caching via a high-speed bus, and other characteristics of a stand-alone computer.
RAID-10 This type offers an array of stripes in which each stripe is a RAID-1 array of drives. This offers higher performance than RAID-1 but at much higher cost.
RAID-53 This type offers an array of stripes in which each stripe is a RAID-3 array of disks. This offers higher performance than RAID-3 but at much higher cost.


Search PC-Pages
Please enter your search below.
PC Pages
Computer Directories

UK Directory

Trade Suppliers & Distributors

Computer Components
Laptops & Notebooks Computer Systems
Computer Fairs
Computer Clubs
Website Hosting

USA Directory
Computer Games
Computer Memory
Computer Parts
Ink Cartridges
Laptop Computers

Tools & Resources
Marketing Tips
Traffic Equalizer
Hosting Solutions
Free Web Hosting for 12 months when you purchase a web design package from VisualWorx
500MB of storage and 20GB of transfer for only $7.95!
Easy CGI - Reliable and Affordable Web Hosting - $7.96/month!
6 Websites for $14.95/month.
Build your own PC
FTP Solutions
Flash FXP
Links & Resources

Links for PC Hardware and Software Support
Other Software Links
Online Games
Free Ecards

Zone Alarm Firewall Software - Stay Safe!

Download PC Protection- Download Now

© 1999-2004 PC-Pages. All rights reserved. VisualWorx Web Design