On 06/05/10 15:03, Phil Stracchino wrote:
> On 05/06/10 02:57, Vlamsdoem wrote:
>    
>> On 05/05/10 15:12, Phil Stracchino wrote:
>>      
>>> On 05/05/10 08:38, John Drescher wrote:
>>>
>>>        
>>>>> Sorry my servers are on gigabit links.
>>>>> How do you come to 9MB/s with a 100Mb link, is it not equals to 12,5 MB/s?
>>>>>
>>>>>            
>>>> Overhead.
>>>>
>>>>
>>>>          
>>>>> If it's correct on a gigabit link I would have a rate transfer of 90MB/s
>>>>>
>>>>>            
>>>> You will probably get less than that if you do not use jumbo frames.
>>>>
>>>>
>>>>          
>> I did an throughput test with iperf between 2 servers on a gigabit link
>> and it results in a 940Mb/s transfer rate .
>> You tell me that transfer rate will be less than 90MB/s, is there so
>> much overhead in the application layer?
>>      
> It really varies.  I routinely get 95Mbit real-world throughput across
> my 100Mbit network; I know other people using different hardware or
> different configurations who've never seen 90Mbit.  Gigabit is the same
> way.  If you're getting 940Mbit throughput you're doing well, but
> remember that actual application throughput may not hit that.
>
>
>    
Ok with all this information I think I'll try with the sata hard disks. 
They seems fast enough to achieve everthing in time.
Thanks to everbody who helped me on this thread.


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