Disaggregated Storage Part III with Josh Goldenhar from Excelero

Continuing on our theme of disaggregated storage, Gavin and Martin talk to Josh Goldenhar, VP Products at Excelero.  In this podcast, recorded on 6th November 2017, the guys talk about NVMesh, the Excelero technology that transforms servers and NVMe drives into a distributed storage mesh.  As we’re starting to see, there are some common themes developing here, with Linux-based support, some client and (in this case) host software.

Elapsed Time: 00:43:21

Timeline

• 00:00:00 – Introductions, Martin, Gavin – no Chris
• 00:01:51 – Who are Excelero?
• 00:03:50 – Excelero – software only (with partners)
• 00:05:30 – But how does it actually work?  The dreaded Server/SAN terminology
• 00:07:30 – Client and target software – separating into management and data planes
• 00:08:30 – Any O/S you want as long as it’s Linux (Kernel dependencies)
• 00:09:30 – It’s all about PCIe and NVMe
• 00:12:00 – 1 million IOPS per socket – NVMe overruns the processor
• 00:16:30 – What about data services? Making comparison with all-flash arrays
• 00:18:30 – Currently using RAID-0 (striping), RAID-1 or RAID-10, RAID-6 8+2 in the future
• 00:24:00 – Why use Excelero (or any disaggregated platform) – full usage of IOPS
• 00:25:00 – Use cases – machine learning, financial, multimedia
• 00:30:00 – Giving less money to Uncle Larry
• 00:33:00 – File system support – better decision making, Spectrum Scale (GPFS), StorNext
• 00:35:00 – what about hardware partners?  Addressing the proverbial elephant
• 00:41:00 – Wrap up

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