[Beowulf] Any recommendations for a good JBOD?

Gerald Creager gerry.creager at tamu.edu
Thu Feb 18 15:15:45 EST 2010


Friends don't let friends use Adaptec controllers if they really want RAID.

gerry

Michael Will wrote:
> Often a jbod is just sas/sata attached, and the real controller is in 
> the host that attaches to it. It could then be a hardware raid controller
> from adaptec, or one of the very fast lsi sas/sata hca's which you could 
> then use with software raid and/or LVM...
> 
> Michael
> 
> 
> -----Original Message-----
> From: beowulf-bounces at beowulf.org on behalf of Rahul Nabar
> Sent: Thu 2/18/2010 11:00 AM
> To: gerry.creager at tamu.edu
> Cc: Beowulf Mailing List
> Subject: Re: [Beowulf] Any recommendations for a good JBOD?
> 
> On Thu, Feb 18, 2010 at 12:12 PM, Gerald Creager 
> <gerry.creager at tamu.edu> wrote:
>  > For what you're describing, I'd consider CoRAID's AoE technology and 
> system,
>  > and use their RAID6 capability. Otherwise, get yourself a box with up 
> to 8
>  > slots, preferably with hot-swap capability, and forge ahead.
>  >
> 
> Thanks Gerry!  That one looks promising.
> 
> One thing that always confuses me:
> 
> Let's say I do software RAID. So just buy a JBOD device. It still has
> some "controller" on it, correct? Is the quality of this controller
> very critical or not so much? And if a unit advertises itself as
> Hardware RAID can I still use it as JBOD mode? There seems more hits
> for "RAID" out there than for "JBOD". Maybe I am looking up the wrong
> keyword.
> 
> --
> Rahul
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-- 
Gerry Creager -- gerry.creager at tamu.edu
Texas Mesonet -- AATLT, Texas A&M University
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Office: 1700 Research Parkway Ste 160, TAMU, College Station, TX 77843
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