Graybeards talk NAND & future memory technologies with Jim Handy, Director at Objective Analysis

In this podcast we discuss NAND and other NVM technology with Jim Handy, noted blogger (at theMemoryGuy.com, TheSSDGuy.com) and Director of Objective Analysis. Howard, Jim and I were all at Micron in mid-February to discuss their latest focus on 3D NAND and enterprise storage and we thought it would be a good time to discuss what’s happening in the NAND space. Jim is primarily a chip and memory technology guy so he comes at this with a lot more chip level technical depth than most of our previous guests.

Jim and the GreyBeards get a bit technical early, talking about how they fabricate 3D NAND chips and the depth and width of the holes needed to support 3D NAND technology  (talk about deep into the technology). It turns out most NAND vendors have another planar NAND chip technology that they can roll out.  Micron stated that the current chip technology would be their last planar NAND technology and they would move after this to 3D. The rest of the industry seems to be taking a slower path but will no doubt get there eventually.

In addition, Jim describes what it means to be SLC, MLC and TLC and how each can be configured on chip so that some NAND pages are SLC, some MLC and the rest TLC. Also, It turns out with current NAND controller technology, TLC NAND can have better endurance than SLC that was shipped 5 years ago.

However, SLC still has faster access due primarily needing less NAND read “settling” times and faster read after writes. NAND has settling time?

We spend some time talking about next generation, non-volatile memory systems.  Jim mentioned that the first time he heard about these technologies was in the 80’s (yes, Jim’s an official GreyBeard). He believes we probably won’t see anything displace NAND until the last 3D NAND makes it’s appearance, sometime after 2023, maybe. But, there’s still a lot of investment in Silicon and don’t count Silicon based NAND technology out just yet. Listen to the podcast to learn more…

This months episode ran a bit longer than normal, over 49 minutes, when GreyBeards get together it’s hard to keep things short … 🙂 

Jim Handy, Director Objective Analysis

JH Mug BWJim Handy of Objective Analysis has over 35 years in the electronics industry including 20 years as a leading semiconductor and SSD industry analyst. Early in his career he held marketing and design positions at leading semiconductor suppliers including Intel, National Semiconductor, and Infineon.

A frequent presenter at trade shows, Mr. Handy is known for his technical depth, accurate forecasts, widespread industry presence and volume of publication. He has written hundreds of market reports, articles for trade journals, and white papers, and is frequently interviewed and quoted in the electronics trade press and other media.  He posts blogs at www.TheMemoryGuy.com, and www.TheSSDguy.com.

 

GreyBeards talk VVOLs with “Father of VVOLs”, Satyam Vaghani, CTO PernixData

In this podcast we discuss VMware VVOLs with Satyam Vaghani, Co-Founder and CTO PernixData. In Satyam’s previous job, he was VMware’s Principal Engineer and Storage CTO   and worked extensively on VVOLs and other VMware storage enhancements. He also happens to be the GreyBeards second repeat guest.

With vSphere 6 coming out by the end  of this quarter, it’s a good time to talk about VVOLs and VASA 2.0.

In the podcast, Ray and Howard got a bit wild on the terminology we used to describe how VMware VVOLs work. Satyam wanted to be sure that we at least provided a decoder ring to get us back to proper VMware terminology.

  • So in the podcast when we discuss the magic LUN, control LUN or the container LUN, VMware calls this the  Protocol Endpoint (PE). VMware uses the+ PE for a message passing interface to inform a storage system what IO to perform. Although technically in block storage the PE is a LUN, it really has no data storage behind it, rather it’s only used as a message box to perform IO on other storage objects.
  • In the podcast when we talk about micro-LUNs, sub-LUNs or VM data objects. VMware calls these items a Virtual Volume (VVOL). VVOLs represent a new version of VMDK. But because VVOLs  no longer have to reside with other VVOLs (VMDKs) on the same LUN, they can be replicated, snapshotted, cloned, etc., all by themselves, without having to impact other VVOLs in the storage system.

VMware is also releasing VASA 2.0 to provide an easier, more standardized approach to provisioning VVOLs. Together, VVOLs and VASA 2.0 should theoretically greatly reduce the burden on VMware storage administration.

We go into more detail how block storage VVOLs work, the benefits of VVOLs-VASA 2.0, and many other items in our discussions with Satyam.  Listen to the podcast to learn more…

This months episode runs about 45 minutes. 

Satyam Vaghani Bio’s

Satyam Vaghani, Co-founder and CTO Pernixdata
Satyam Vaghani is Co-Founder and CTO at PernixData, a company that leverages server flash to enable scale-out storage performance that is independent of capacity. Earlier, he was VMware’s Principal Engineer and Storage CTO where he spent 10 years delivering fundamental storage innovations in vSphere. He is most known for creating the Virtual Machine File System (VMFS) that set a storage standard for server virtualization. He has authored 50+ patents, led industry-wide changes in storage systems and standards via VAAI, and has been a regular speaker at VMworld and other industry and academic forums. Satyam received his Masters in CS from Stanford and Bachelors in CS from BITS Pilani.

Greybeards talk about Storage Trends in our 2014 Yearend Podcast-part 3

In this our end of year video podcast Howard and I discuss some of the trends impacting the storage industry today.  Which include Cloud, SSD/Flash, software defined storage and converged server-storage systems and object storage.

The video comes in at a little more than 43 minutes and is available to be streamed, from Vimeo

or as a downloadable podcast in as a 3 videos.

Part 3 (~8 minutes) discusses the state of object storage and some of the trends impacting it’s adoption.

Greybeards talk about Storage Trends in our 2014 Yearend Podcast-part 2

In this our end of year video podcast Howard and I discuss some of the trends impacting the storage industry today.  Which include Cloud, SSD/Flash, software defined storage and converged server-storage systems and object storage.

The video comes in at a little more than 43 minutes and is available to be streamed, from Vimeo

or as a downloadable podcast in as a 3 videos.

Part 2 (~18 minutes) discusses flash/ssd pricing and when if ever this will crossover with disk pricing.

Graybeards talk about storage trends in our 2014 yearend podcast-part 1

In this our end of year video podcast Howard and I discuss some of the trends impacting the storage industry today.  Which include Cloud, SSD/Flash, software defined storage and converged server-storage systems and object storage.

The video comes in at a little more than 43 minutes and is available to be streamed, from Vimeo

or as a downloadable podcast in 3 videos. Part 1 (~8 minutes) discusses hyper convergence, software defined storage, cloud and the impact on enterprise storage vendors.