Go Back   Computer Forums > General Computing > Server Administration
Click Here to Login
Join Computer forums Today


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-06-2008, 12:17 PM   #1
In Runtime
 
Join Date: Aug 2006
Posts: 102
Default Match harddrives in a RAID 3?

If I have a RAID 3 array at work, do all the drives need to be the same drive? same size? Is it "Best Practice" to have them all be the same or any other reason you need to have the same drives?

I am trying to solve a dispute between a co-worker and myself so please answer quickly.
__________________

BrianS is offline   Reply With Quote
Old 11-30-2008, 03:09 AM   #2
Daemon Poster
 
netBooger's Avatar
 
Join Date: Nov 2007
Posts: 557
Send a message via AIM to netBooger Send a message via MSN to netBooger
Default Re: Match harddrives in a RAID 3?

It is a little late but no they don't need to all be the same size. But your storage space will only be equal to the smallest drive.

Further Explanation:
The capacity of a RAID 3 array is equal to the smallest member hard disk drive capacity multiplied by the number of disk drives in the array, minus one disk for parity. Example 1: (6) 200 GB drives in a RAID 3 equals 1 TB capacity (6 x 200 GB = 1.2 TB, minus 200 GB for parity). Example 2: (1) 73 GB drive and (2) 146 GB drives in a RAID 3 equals 146 GB capacity (3 x 73 GB = 219 GB, minus 73 GB for parity).
__________________

__________________
|| Cosmos 1000 || Asus Maximus Formula SE || Q6850 3.00GHz || Zalman 9700NT || BFG 8800GTX OC || 4GB Corsair Dominator 1066mhz || Enermax Galaxy 850W || Windows Vista Ultimate 64 || WD Raptor 150GB x2 + WD Caviar 350GB ||
netBooger is offline   Reply With Quote
Old 11-30-2008, 01:58 PM   #3
Guru
 
JogaBonito1502's Avatar
 
Join Date: Jan 2008
Location: U.S.
Posts: 7,841
Default Re: Match harddrives in a RAID 3?

Why use RAID3? RAID5 does the same thing and is more efficient at it.
JogaBonito1502 is offline   Reply With Quote
Old 12-16-2008, 01:37 AM   #4
In Runtime
 
Join Date: Aug 2006
Posts: 117
Default Re: Match harddrives in a RAID 3?

I would choose a more popular raid level.
Striped parity is faster anyhow
bilbus is offline   Reply With Quote
Old 12-23-2008, 10:57 AM   #5
Site Team
 
root's Avatar
 
Join Date: Mar 2004
Posts: 8,004
Default Re: Match harddrives in a RAID 3?

Thread was duplicate, which is why this one received very little attention.
http://www.computerforums.org/showth...611#post862611
__________________
I didn’t fight my way to the top of the food chain to be a vegetarian…
Im sick of people saying 'dont waste paper'. If trees wanted to live, they'd all carry guns.
"The inherent vice of capitalism is the unequal sharing of blessings; The inherent vice of socialism is the equal sharing of miseries."
root is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 09:24 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.0