Monday, January 28, 2019

Five Thoughts from SNIA 2019 Persistent Memory Summit

Last week I attended the Persistent Memory Summit in Santa Clara. This is a great one day conference each year bringing together experts on Persistent Memory examples, system support, and applications. The presentations are posted and there is a video as well (thank you SNIA!)

5 thoughts:
  1. Now that persistent memory has moved from a “wouldn’t it be great if we had this?” concept to a “we have some options, now what?” debate…. We need to define “persistent memory” based on the new reality. Rob Peglar and Stephen Bates reminded us that using the term SCM is not politically correct and can only be used in a safe space away miles from a SNIA conference (Starbucks Milpitas worked for me). This is good since it was way too vague and theoretical. Andy Rudoff offered a simple definition: it needs to be address in load/store like memory (Not blocks and pages), and persistent. Speed is in the eye of the beholder but a year ago there was a definition of <2us latency in applications which I liked. The NVDIMM-N and NVDIMM-P definitions would indicate that it does not need to be one type of memory but is a DIMM or system. These simple definitions would seem to eliminate some products that are often referred to as “persistent memory” (side discussion)
  2. The most common persistent memory today arguably is NVDIMM-N which provides us with up to 32GB DIMMS that can be written to like DRAM but never lose data. The challenges here are that the use of DRAM for entire capacity plus NAND plus energy support leads to a high cost that is 3x or more per bit compared to DRAM. As a result, a small amount of systems (typically SANs) use them today. Multiple providers were at the conference and you can buy this persistent memory whenever you wish.
  3. Frank Hady presented Intel Optane Persistent Memory and the applications. Two modes, one is persistent memory (App Direct) and one is memory Mode (which loses data on power cycle). Memory mode is great for adding tons of memory that is somewhat slower and cheaper but it is not persistent per Intel documentation. This is poised to grow rapidly with Intel backing but it is off to a slow start. From talking to customers, most say they still can’t get Optane PM to build their own system and the availability today is running apps on cloud systems. I have details on modes and projected revenue in other publications
  4. NVDIMM-P is proposed as an open source version similar to Optane PM where the architecture supports some DRAM plus NAND or other memory type to optimize for cost. This will allow DIMMs that are LESS expensive than DRAM, higher density, and more non-proprietary options. We need this ASAP! When can I get one???
  5. From the conference, it feels like Infrastructure support and application drivers are ahead of the actual hardware…. This is probably not totally true but there is drive from Intel and SNIA to get all the support in place and the OS supports it and we have applications. Once Intel ships significant volume and competitors start shipping their versions of PM, we can test out all the applications

See more info on our blogs or website. Thanks to Chris Mellor of Register fame for republishing some of my FMS work on persistent memory and Optane with all the gory details and numbers.

Mark Webb

Tuesday, January 22, 2019

Jan 2019 Intel Optane Revenue Update

At 2018 Flash Memory Summit we presented models for 3D XPoint/Optane revenue, costs, performance and endurance. We update these here.

In the 6 months since, Intel has updated product roadmaps and has provided details on the Optane DIMMS. New projections are based on these changes

Revenue From FMS2018 and this Blog

Most likely 2018 sales did not quite meet expectations. DIMMs sales were fairly low pre-production (read: Samples). Non DIMM SSDs sell but at lower prices and in lower volumes than expected.

2020 Still can meet our projections from FMS.... but Intel is off to a slow start in 2019

  • Cascade lake and volumes are later and lower than planned. 
  • Attach rate projection for Optane DIMM to cascade lake was low and we lowered it even more based on customer reports and timing. Also Intel showed and we reviewed in this blog that when used as main memory expansion, Optane DIMM is not persistent. To be persistent it is a separate memory block... More like a SSD on the DRAM bus.
  • Server DRAM Demand is down, prices are down. This is not good for 2019
  • The Lehi Factory is in transition to Micron ownership. Intel has plans on how to ramp XPoint internally but those are in progress most of 2019.
  • Optane Memory for desktops has not taken off. Intel now plans notebook version with Optane Memory + QLC SSD which we have shown to be a cost effective performance SSD.
Unless Intel gives us data at Persistent Memory Summit or in Earnings announcement, we have to model the revenue (Intel can always correct me!). We project 2019 to be below the 2018/2020 midpoint by about $100M in DIMMs and overall Optane revenue in 2019 to be about $200M below 2018/2020 Midpoint. Micron will have no measurable revenue in 2019. As you can see, the revenue is based on DIMM sales, if those continue to slip, the numbers will get lower and competition is enabled

We have detailed data on GB shipments, DIMM vs SSD sales, Pricing, Cost, performance and endurance for 3D XPoint and Optane. We also can discuss the JV agreement changes and implications. Call to discuss. We will be at 2019 Persistent Memory Summit this week to discuss details as well

Mark Webb

Wednesday, January 16, 2019

2019 Persistent Memory Summit and Reports

SNIA is hosting the 2019 Persistent Memory Summit next week. We will have detailed updates and reports on hot topics in Persistent Memory shown below

I highly recommend the people attend this as it provides are great vision for technology and markets. 

While I am not presenting, I will attend and have updated data from my FMS presentations on 
  • 2019 Persistent Memory Revenue numbers
  • Optane revenue for Intel overall and specifically the "quasi-launched" Optane DIMMs
    • Hint: both applications and the market are changing
    • Sometimes persistent memory is not persistent
  • 3d Xpoint technology roadmap, specifications, endurance, and challenges for both Micron and Intel
  • Competition to Optane from ReRAM, NVDIMM-P, Low latency NAND, ZNAND etc. Can they match or even surpass Optane?
Plus I will provide commentary on technology, market, and application presentations real time. 

Hope to see you there, text me or email to set up a meeting. 


Mark Webb