On Mon, 2018-12-17 at 08:50 +0100, Jan-Frode Myklebust wrote: > I’d be curious to hear if all these arguments against iSCSI shouldn’t > also apply to NSD protocol over TCP/IP? >
They don't is the simple answer. Either theoretically or practically. It won't necessarily be a problem for iSCSI either. It is the potential for wild over subscription of the links with the total naivety of the block based iSCSI protocol that is the issue. I suspect that with NSD traffic it is self limiting. That said looking about higher end switches seem to do DCE now, though FCoE seems to have gone nowhere. Anyway as I said if you want lower cost use SAS. Even if you don't want to do ESS/SSS you can architecture something very similar using SAS based arrays from your favourite vendor, and just skip the native RAID bit. JAB. -- Jonathan A. Buzzard Tel: +44141-5483420 HPC System Administrator, ARCHIE-WeSt. University of Strathclyde, John Anderson Building, Glasgow. G4 0NG _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss