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Robert Parkhurst | 15 Jun 2007 18:11
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Multiple RAID adapters

I'm looking at setting up a massive backup, or a "tier 2" solution.  I've got my eye on a 6U/32-drive (SATA) enclosure ( http://rackmountmart.stores.yahoo.net/newrm6uracch.html ).  Then I'd put a motherboard, CPU, etc. into it.

As far as how to manage all 32 drives, I'm looking at a hardware RAID card.  Either Areca, 3ware, LSI, or Adaptec.  I've dealt the most with Areca and have to say it's a pretty good card.  But what i'm looking for is:  A single 32-SATA drive RAID card OR dual 16-SATA drive RAID cards that can work together to form a single RAID.

I've heard that you can put certain Adaptec RAID cards in parallel and configure them to work together as a single massive RAID.  Is this true?  Can Areca do this as well?

As always, any comments, criticisms, or suggestions are always welcome :)



Thanks!
Robert

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Brad Knowles | 15 Jun 2007 20:08
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Re: Multiple RAID adapters

On 6/15/07, Robert Parkhurst wrote:

>  As far as how to manage all 32 drives, I'm looking at a hardware RAID
>  card.  Either Areca, 3ware, LSI, or Adaptec.  I've dealt the most with
>  Areca and have to say it's a pretty good card.  But what i'm looking
>  for is:  A single 32-SATA drive RAID card OR dual 16-SATA drive RAID
>  cards that can work together to form a single RAID.

I don't know of any single cards that can deal with anywhere remotely 
close to that many drives.

If you're talking about using them with Linux, you're going to first 
want to find out which cards are well-supported on your platform. 
That will leave out a lot of cards that may be well-known on a 
Microsoft OS.

If you want a lot of drives, the only solutions I know of are things 
like the ACNC JetStor SATA 416S (see 
<http://www.acnc.com/02_01_jetstor_sata_416s.html>), or the SurfRAID 
Triton 16SA from Partners Data (see 
<http://www.partnersdata.com/cgi-bin/productinfo?division=storage&id=367>). 
My understanding is that ACNC & PartnersData actually resell the same 
units from the same Taiwanese OEM, but that may just be rumor.

Otherwise, the next step up is real storage from real vendors like 
Adaptec, Hitachi, EMC, etc....  Or maybe less well-known names like 
Isilon or 3Par.

--

-- 
Brad Knowles <brad@...>, Consultant & Author
LinkedIn Profile: <http://tinyurl.com/y8kpxu>
Slides from Invited Talks: <http://tinyurl.com/tj6q4>

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