Re: Performance question

[Piergiorgio Sartor <piergiorgio.sartor@nexgo.de>]

Hi,

thanks for the answer.

Well what I would like to have is exactly a configuration
hint, eventually benchmarks and the like.

The requirements are: two disks, redundacy.
The question is: what configuration is reccommended
in view of performances (or "what can be achieved").

Is that specific enough?

Thanks again,

bye,

pg

On Sat, Jan 17, 2009 at 12:11:00PM -0600, David Lethe wrote:
> All we know is that you use 2 disks and md.  This is like posting to a TCP/IP architecture group and saying you have a network connection and want performance advice.   Read up, supply full config info, run benchmarks, then ask specific questions.  GI=GO.
> -----Original Message-----
> 
> From:  "Piergiorgio Sartor" <piergiorgio.sartor@nexgo.de>
> Subj:  Performance question
> Date:  Sat Jan 17, 2009 11:18 am
> Size:  874 bytes
> To:  "linux-raid@vger.kernel.org" <linux-raid@vger.kernel.org>
> 
> Hi all, 
>  
> I'll have to setup some machines with two HDs (each) 
> in order to get some redundancy. 
>  
> Reading the MD features I noticed there are several 
> possibilities to create a mirror. 
> I was wondering which one offer the best perfomances 
> and/or what are the compromises to accept between 
> the different solutions. 
>  
> One possibility is a classic RAID-1 mirror. 
> Another is a RAID-10 far. 
> There would also be the RAID-10 near, but I guess 
> this is equivalent to RAID-1. 
>  
> Any suggestion on which method offers higher "speed"? 
> Or there are other possibilities with 2 HDs (keeping 
> the redundancy, of course)? 
>  
> Thanks a lot in advance, 
>  
> bye, 
>  
> --  
>  
> piergiorgio 
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-- 

piergiorgio