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Home » #36 – The Persistence of Memory with Rob Peglar

#36 – The Persistence of Memory with Rob Peglar

2 February 2018 by Chris Evans

In this week’s episode, the team talk to Rob Peglar, Senior VP and CTO at SymbolicIO.  The conversation covers persistent memory and in particular the NVDIMM format of devices that provide persistent storage in a standard server DIMM slot.  Rob explains how the standards are set through JEDEC, with a description of the three types – NVDIMM-N, F and P.

The discussion continues to use cases, which seem mainly to be for any application needing low latency with local server persistence.  Databases and analytics are the main beneficiary, however Rob believes that the hyper-scalers may be able to take advantage of the technology in the future.

A few references are made during the podcast.  The SNIA Persistent Memory sub-site can be found here at https://www.snia.org/pm.  Here’s a link to the Persistent Memory Summit – https://www.snia.org/pm-summit.  It’s actually Linux kernel 4.2 onwards that adds NVDIMM support as well as Windows 2016.  This Microsoft webinar provides some detail on how NVDIMM can be used with Storage Spaces Direct – Using Non-volatile Memory (NVDIMM-N) as Block Storage in Windows Server 2016.

Elapsed Time: 00:28:46

Timeline

  • 00:00:00 – Intro
  • 00:00:54 – Persistent Memory defined
  • 00:02:00 – Why use it? What is it for?
  • 00:04:40 – Why not just use a honking great battery for protection?
  • 00:05:20 – Standards from JEDEC
  • 00:06:00 – Defining the NV-DIMM formats. N, F and P.
  • 00:12:00 – Could 3D-XPoint justify its own definition?
  • 00:13:35 – How are these devices supported by the hardware?
  • 00:16:00 – What are the application use cases for persistent memory?
  • 00:19:00 – Could I trust having NVDIMM as my only source of data?
  • 00:23:00 – Who is buying and using NVDMM today?
  • 00:27:30 – Wrap up

Copyright (c) 2016-2018 Storage Unpacked.  No reproduction or re-use without permission.

 

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Filed Under: Guest Speakers Tagged With: ChrisE, Gavin, Martin, NVDIMM, Rob Peglar, SNIA

Reader Interactions

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  1. Swordfish - A Standard by Any Other Name Would Smell As Sweet - Tekhead.it says:
    6 February 2018 at 8:11 pm

    […] Day 13. One of the speakers (industry veteran Rob Peglar) also recently appeared as a guest on the Storage Unpacked podcast – an episode well worth a listen […]

  2. What are Storage Class Memory (SCM) and Persistent Memory (PM)? says:
    22 June 2018 at 6:35 am

    […] of SNIA and has an interest in persistent memory.  You can listen and subscribe to the podcast here.  The discussion gives some further insight into the technology and where we might see it […]

  3. #57 - Storage on the Edge with Scott Shadley | Storage Unpacked Podcast says:
    13 July 2018 at 11:01 am

    […] #36 – The Persistence of Memory with Rob Peglar […]

  4. What are Storage Class Memory (SCM) and Persistent Memory (PM)? says:
    26 June 2019 at 1:06 pm

    […] of SNIA and has an interest in persistent memory.  You can listen and subscribe to the podcast here.  The discussion gives some further insight into the technology and where we might see it […]

  5. The Biggest Storage Trends of 2019 - Architecting IT says:
    15 August 2019 at 8:27 am

    […] #36 – The Persistence of Memory with Rob Peglar […]

  6. The Expanding Storage Hierarchy - Architecting IT says:
    28 August 2019 at 10:34 am

    […] fit into a range of solutions called variously Storage Class Memory or Persistent Memory.  The NVDIMM format is particularly interesting as physically fits into DRAM slots (with all the associated timing and […]

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