RAID HowTo?

jabagawee

Special circumstances, but then again, don't we all have them?

I'm going to be building a home server with a main 80GB drive and two 750/1000GB drives. I'm not too sure if I'll be getting the 750s or the tetrabytes. / (root) will be on the 80GB for no particular reason. The two extras will be RAID-1'ed at /media/dump. /media/dump will be a Samba share for everyone to see. When I want to upgrade to RAID-5, I know I'm going to have big problems. Can someone help me get all this straight? First, a tutorial on how to do RAID in the first place. I've never found a concise enough answer on Google. Next, I need to know how to do the expansion of the RAID array when time comes along.

http://www.economysizegeek.com/2006/...aid5-and-grow/

I've found that, but my n00bish Linux skills serve only to confound me. I'm not even sure if this information is relevant. Help?

erickramirez

There's a great post in the "Tutorials & Tips" forum by kragen and is available at http://ubuntuforums.org/showthread.php?t=408461.

Cheers,
Erick Ramirez
Melbourne, Australia

bodhi.zazen

That is an awesome post.

The wiki has some information also :

https://help.ubuntu.com/community/FakeRaidHowto

https://help.ubuntu.com/community/Ra...igurationHowto

jabagawee

Thanks for the help. However, I will be sticking fully with a software RAID, as opposed to a fakeRAID. Does anyone have any clear concise instructions on how to perform the RAID-1 to RAID-5 migration I detailed?

njparton

If you can afford it, buy a 3ware card with 4 or more ports

Raid 1 to 5 migration can be done by the card itself. Avoid software raid by an OS or software raid card - I've had plenty of problems with these in the past.

jabagawee · 01:07 AM

Avoid software RAID? But it's Linux....

Fine, 3ware it is.

Edit: Anyone know of a cheaper RAID controller card with RAID-1-to-5 migration? 3ware sounds prohibitively expensive.

njparton

Try getting a used one on ebay.

Otherwise if you're storing precious data it's worth the investment in my book.

December 5th, 2007	#1
jabagawee Just Give Me the Beans! Join Date: May 2007 Beans: 56	RAID HowTo? Special circumstances, but then again, don't we all have them? I'm going to be building a home server with a main 80GB drive and two 750/1000GB drives. I'm not too sure if I'll be getting the 750s or the tetrabytes. / (root) will be on the 80GB for no particular reason. The two extras will be RAID-1'ed at /media/dump. /media/dump will be a Samba share for everyone to see. When I want to upgrade to RAID-5, I know I'm going to have big problems. Can someone help me get all this straight? First, a tutorial on how to do RAID in the first place. I've never found a concise enough answer on Google. Next, I need to know how to do the expansion of the RAID array when time comes along. http://www.economysizegeek.com/2006/...aid5-and-grow/ I've found that, but my n00bish Linux skills serve only to confound me. I'm not even sure if this information is relevant. Help?

December 5th, 2007	#2
erickramirez First Cup of Ubuntu Join Date: Dec 2007 Location: Melbourne, Australia Beans: 10 Ubuntu 5.10	Re: RAID HowTo? There's a great post in the "Tutorials & Tips" forum by kragen and is available at http://ubuntuforums.org/showthread.php?t=408461. Cheers, Erick Ramirez Melbourne, Australia

December 5th, 2007	#3
bodhi.zazen Ubuntu Guru Join Date: Apr 2006 Location: Montana My beans are hidden! Xubuntu Karmic Koala (testing)	Re: RAID HowTo? That is an awesome post. The wiki has some information also : https://help.ubuntu.com/community/FakeRaidHowto https://help.ubuntu.com/community/Ra...igurationHowto __________________ A person with ubuntu is open and available to others, affirming of others, does not feel threatened that others are able and good, for he or she has a proper self-assurance that comes from knowing that he or she belongs in a greater whole and is diminished when others are humiliated or diminished, when others are tortured or oppressed. ~ Archbishop Desmond Tutu, 1999

December 5th, 2007	#4
jabagawee Just Give Me the Beans! Join Date: May 2007 Beans: 56	Re: RAID HowTo? Thanks for the help. However, I will be sticking fully with a software RAID, as opposed to a fakeRAID. Does anyone have any clear concise instructions on how to perform the RAID-1 to RAID-5 migration I detailed?

December 5th, 2007	#5
njparton 100% Pure Ubuntu Join Date: Sep 2006 Location: UK Beans: 852 Ubuntu 9.10 Karmic Koala	Re: RAID HowTo? If you can afford it, buy a 3ware card with 4 or more ports Raid 1 to 5 migration can be done by the card itself. Avoid software raid by an OS or software raid card - I've had plenty of problems with these in the past. __________________

December 6th, 2007	#6
jabagawee Just Give Me the Beans! Join Date: May 2007 Beans: 56	Re: RAID HowTo? Avoid software RAID? But it's Linux.... Fine, 3ware it is. Edit: Anyone know of a cheaper RAID controller card with RAID-1-to-5 migration? 3ware sounds prohibitively expensive. Last edited by jabagawee; December 6th, 2007 at 01:07 AM..

December 6th, 2007	#7
njparton 100% Pure Ubuntu Join Date: Sep 2006 Location: UK Beans: 852 Ubuntu 9.10 Karmic Koala	Re: RAID HowTo? Try getting a used one on ebay. Otherwise if you're storing precious data it's worth the investment in my book. __________________

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