Solved

RAID architecture?

Posted on 1998-09-17
5
2,381 Views
Last Modified: 2006-11-17
What is RAID architecture? What are its advantages?
0
Comment
Question by:ritua
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
5 Comments
 

Author Comment

by:ritua
ID: 1010628
Give the answer as soon as possible. Thanx.
0
 
LVL 1

Accepted Solution

by:
dumbscotty earned 0 total points
ID: 1010629
Go to www.webopaedia.com and search on it if it's not listed in the top 10 queries. I'd recommend bookmarking this site as I've found it really useful for technical information.

Good luck.
0
 
LVL 2

Expert Comment

by:gormenghast
ID: 1010630
Hi
RAID stands for "Redundant Arrays of Independent Disks".
This means that instead of having your data stored on individual disks which could fail and result in loss of data, you stripe your data across several disks with parity information so that should one drive fail all the data can be recreated.
There are different levels of RAID from RAID 0 to RAID 5, these have different ways of dealing with parity excepting RAID 0 which is simple disk striping they all allow for 1 of the disks to fail without losing data.
RAID 5 is the most common which distributes its parity information over all disks.
RAID 3 is disk striping with a dedicated parity drive
RAID 2 is simple disk mirroring.

Hope this helps
0
 

Author Comment

by:ritua
ID: 1010631
Thanx for the site info. It is a reall...y good site and I got the info needed. Thanx for the comment too.
0
 

Expert Comment

by:Silas
ID: 1010632
There is a difference between a software-based RAID system and a hardware-based RAID system.  Windows NT 4.0 can use RAID levels 0,1,&5, but it is up to OS to keep track of all the parity information and file structures.  A hardware-based system consists of a SCSI controller card with an on-board processor, that can be independantly configured to construct an array.  In this scenario, the controller card keeps track of the array, and the drives become "hot-swapable."  If one drive fails, it can be replaced, and the data will be auto-regenerated.  To NT, the array will appear as one large drive.  The OS will not have to keep track of any parity information, and perfromance will improve.  It is always better to go with a hardware-based RAID solution, but it is more expensive!
0

Featured Post

Complete VMware vSphere® ESX(i) & Hyper-V Backup

Capture your entire system, including the host, with patented disk imaging integrated with VMware VADP / Microsoft VSS and RCT. RTOs is as low as 15 seconds with Acronis Active Restore™. You can enjoy unlimited P2V/V2V migrations from any source (even from a different hypervisor)

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

This is about my first experience with programming Arduino.
A clone is a duplicate copy. Sheep have been cloned and maybe someday even people will be cloned, but disk cloning (performed by the hard drive cloning software) is a vital tool used to manage and protect data. Let’s look at what hard drive cloning …
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

733 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question