Re: Performance question

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" <redacted>
Subj:  Performance question
Date:  Sat Jan 17, 2009 11:18 am
Size:  874 bytes
To:  "linux-raid@vger.kernel.org" <redacted>

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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