[gpfsug-discuss] Connecting IBM ESS 3200 to 10 Gb Ethernet

[Jonathan Buzzard]

On 05/06/2023 17:41, Alec wrote:
>
> Many network storage engineers simply don't understand bandwidth (or the 
> importance of port groups)...  With an ESS you are talking GIGA*BYTES* 
> per second and storage and networking architects simply see 10Gbe and 
> assume that's good enough. A 10Gbe connection can do about 1.4GB/s..  
> 100Gbe can do 12.5GB/s.   To the wrong engineer you can explain this 
> until you're blue in the face and they won't get it.  You need to divide 
> Gbe by 8 to get about the GB/s throughput.  Explain to them that a USB-C 
> interface is capable of 10Gbe... So you're throttling millions of 
> dollars in technology to the speed of a consumer grade USB-C interface.  
> When infact an ESS can drive at least 2x100Gbe to saturation.
> 
> I don't have an ESS but a classic SAN array and Spectrum Scale and I can 
> saturate 32*8Gbe fiber connections.
> 

Your kidding right? That's basic competency for the job!!!


JAB.

-- 
Jonathan A. Buzzard                         Tel: +44141-5483420
HPC System Administrator, ARCHIE-WeSt.
University of Strathclyde, John Anderson Building, Glasgow. G4 0NG