[TriLUG] Re: New system configuration thoughts

[Kevin Jones]

I think the way they are doing that is by combining multiple 2TB LUN's in some sort of "virtual LUN" hence the prevalence of 14TB (7 x 2TB) arrays.


----- Original Message ----
From: Jason Tower <jtower at cerient.net>
To: Triangle Linux Users Group discussion list <trilug at trilug.org>
Sent: Thursday, May 3, 2007 4:50:54 PM
Subject: Re: [TriLUG] Re: New system configuration thoughts


i have a first generation sata raid card running at a client site that only 
supports arrays up to 2TB due to addressing limitations or something like 
that.  current controllers can go above 2TB with ease, and the OS should be 
able to handle the resulting device with equal ease.

jason

Kevin Jones wrote:
> It seems like I read somewhere that RAID 5 begins to really take a beating when you get in to higher numbers of drives due to a 2TB limitation in the algorithm. All of the high-end arrays I've looked at use a different algorithm for providing multiple drive failure tolerance and the speed actually improves (supposedly) with higher numbers of drives. 
> 
> ''...but that one...eh, notsomuch."
> 
> 
> ----- Original Message ----
> From: Magnus <magnus at trilug.org>
> To: Triangle Linux Users Group discussion list <trilug at trilug.org>
> Sent: Thursday, May 3, 2007 3:53:18 PM
> Subject: Re: [TriLUG] Re: New system configuration thoughts
> 
> 
> Kevin Jones wrote:
>> Is that RAID 5? 
> 
> I've done SATA RAID 5 on 3ware.  As Borat would say, "is very nice!" 
> That was first gen sata so I wasn't very impressed with performance vs. 
> U320 SAN storage but benchmarks I've been seeing from co-workers of 
> their current-gen SATA arrays is actually spanking my U320 SAN in a 
> number of areas.
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