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    SNIA Storage Developer Conference-The Knowledge Continues

    October 13th, 2016

    SNIA’s 18th Storage Developer Conference is officially a success, with 124 general and breakout sessions;  Cloud Interoperability, Kinetiplugfest 5c Storage, and SMB3 plugfests; ten Birds-of-a-Feather Sessions, and amazing networking among 450+ attendees.  Sessions on NVMe over Fabrics won the title of most attended, but Persistent Memory, Object Storage, and Performance were right behind.  Many thanks to SDC 2016 Sponsors, who engaged attendees in exciting technology discussions.

    For those not familiar with SDC, this technical industry event is designed for a variety of storage technologists at various levels from developers to architects to product managers and more.  And, true to SNIA’s commitment to educating the industry on current and future disruptive technologies, SDC content is now available to all – whether you attended or not – for download and viewing.

    20160919_120059You’ll want to stream keynotes from Citigroup, Toshiba, DSSD, Los Alamos National Labs, Broadcom, Microsemi, and Intel – they’re available now on demand on SNIA’s YouTube channel, SNIAVideo.

    All SDC presentations are now available for download; and over the next few months, you can continue to download SDC podcasts which combine audio and slides. The first podcast from SDC 2016 – on hyperscaler (as well as all 2015 SDC Podcasts) are available here, and more will be available in the coming weeks.

    SNIA thanks all its members and colleagues who contributed to make SDC a success! A special thanks goes out to the SNIA Technical Council, a select group of acknowledged industry experts who work to guide SNIA technical efforts. In addition to driving the agenda and content for SDC, the Technical Council oversees and manages SNIA Technical Work Groups, reviews architectures submitted by Work Groups, and is the SNIA’s technical liaison to standards organizations. Learn more about these visionary leaders at http://www.snia.org/about/organization/tech_council.

    And finally, don’t forget to mark your calendars now for SDC 2017 – September 11-14, 2017, again at the Hyatt Regency Santa Clara. Watch for the Call for Presentations to open in February 2017.


    Podcasts Bring the Sounds of SNIA’s Storage Developer Conference to Your Car, Boat, Train, or Plane!

    May 26th, 2016

    SNIA’s Storage Developer Conference (SDC) offers exactly what a developer of cloud, solid state, security, analytics, or big data applications is looking  for – rich technical content delivered in a no-vendor bias manner by today’s leading technologists.  The 2016 SDC agenda is being compiled, but now yousdc podcast pic can get a “sound bite” of what to expect by downloading  SDC podcasts via iTunes, or visiting the SDC Podcast site at http://www.snia.org/podcasts to download the accompanying slides and/or listen to the MP3 version.

    Each podcast has been selected by the SNIA Technical Council from the 2015 SDC event, and include topics like:

    • Preparing Applications for Persistent Memory from Hewlett Packard Enterprise
    • Managing the Next Generation Memory Subsystem from Intel Corporation
    • NVDIMM Cookbook – a Soup to Nuts Primer on Using NVDIMMs to Improve Your Storage Performance from AgigA Tech and Smart Modular Systems
    • Standardizing Storage Intelligence and the Performance and Endurance Enhancements It Provides from Samsung Corporation
    • Object Drives, a New Architectural Partitioning from Toshiba Corporation
    • Shingled Magnetic Recording- the Next Generation of Storage Technology from HGST, a Western Digital Company
    • SMB 3.1.1 Update from Microsoft

    Eight podcasts are now available, with new ones added each week all the way up to SDC 2016 which begins September 19 at the Hyatt Regency Santa Clara.  Keep checking the SDC Podcast website, and remember that registration is now open for the 2016 event at http://www.snia.org/events/storage-developer/registration.  The SDC conference agenda will be up soon at the home page of http://www.storagedeveloper.org.

    Enjoy these great technical sessions, no matter where you may be!


    SNIA Tutorials Highlight Industry Track at USENIX FAST ’16

    February 18th, 2016

    by Marty Foltyn

    SNIA is pleased to present seven of their series of SNIA Tutorials at the 14th USENIX conference on File and Storage Technologies (USENIX FAST) on February 24, 2016 in Santa Clara, CA.  fast16_button_180_0

    SNIA Tutorials are educational materials developed by vendors, training companies, analysts, consultants, and end-users in the storage and information technology industry. SNIA tutorials are presented and used throughout the world at SNIA events and international conferences.

    Utilizing VDBench to Perform IDC AFA Testing will be presented by Michael Ault, Oracle Guru, IBM, Inc. This SNIA Tutorial provides procedures, scripts, and examples to perform the IDC test framework utilizing the free tool VDBench on AFAs to provide a common set of results for comparison of multiple AFAs suitability for cloud or other network based storage.

    Practical Online Cache Analysis and Optimization will be presented by Carl Waldspurger, Research and Development, CloudPhysics, Inc., and Irfan Ahmad, CTO, CloudPhysics, Inc.  After reviewing the history and evolution of MRC algorithms, this SNIA Tutorial examines new opportunities afforded by MRCs to capture valuable information about locality that can be leveraged to guide efficient cache sizing, allocation, and partitioning in order to support diverse goals such as improving performance, isolation, and quality of service.

    SMB Remote File Protocol (Including SMB 3.x) will be presented by Tom Talpey, Architect, Microsoft.  This SNIA Tutorial begins by describing the history and basic architecture of the SMB protocol and its operations. The second part of the tutorial covers the various versions of the SMB protocol, with details of improvements over time. The final part covers the latest changes in SMB3, and the resources available in support of its development by industry.

    Object Drives: A New Architectural Partitioning will be presented by Mark Carlson, Principal Engineer, Industry Standards, Toshiba.  This SNIA Tutorial discusses the current state and future prospects for object drives. Use cases and requirements will be examined and best practices will be described.

    Fog Computing and Its Ecosystem will be presented by Ramin Elahi, Adjunct Faculty, UC Santa Cruz Silicon Valley.  This SNIA Tutorial introduces and describes Fog Computing and discusses how it supports emerging Internet of Everything (IoE) applications that demand real-time/predictable latency (industrial automation, transportation, networks of sensors and actuators).

    Privacy vs. Data Protection: The Impact of EU Data Protection Legislation will be presented by Thomas Rivera, Senior Technical Associate, HDS.  This SNIA Tutorial explores the new EU data protection legislation and highlights the elements that could have significant impacts on data handling practices.

    Converged Storage Technology will be presented by Liang Ming, Research Engineer, Development and Research, Distributed Storage Field, Huawei.  This SNIA Tutorial discusses the concept of key-value storage, next generation key-value converged storage solutions, and what has been done to promote the key-value standard.

    Get Your Registration Discount
    As a friend of SNIA, we are able to offer you a $75 discount on registration for the technical sessions. Use code75FAST15SNIA during registration to receive your discount.

    FAST ’16 Program
    FAST ’16 will kick off with their Keynote Address given by Eric Brewer, VP Infrastructure at Google, on “Spinning Disks and Their Cloudy Future”. In addition to the SNIA Industry Track, the 3-day technical sessions program also includes 27 refereed paper presentations.

    The full program is available here: https://www.usenix.org/conference/fast16/glance

     


    A Deep Dive into the SNIA Storage Developer Conference – The File Systems Track

    September 9th, 2015

    SNIA Storage Developer Conference (SDC) 2015 is two weeks away, and the SNIA Technical Council is finalizing a strong, comprehensive agenda of speakers and sessions. Wherever your interests lie, you’re sure to find experts and topics that will expand your knowledge and fuel your professional development!SDC15_WebHeader3_999x188

    For the next two weeks, SNIA on Storage will highlight exciting interest areas in the 2015 agenda. If you have not registered, you need to! Visit www.storagedeveloper.org to see the four day overview and sign up.

    Year after year, the File Systems Track at SDC provides in depth information on the latest technologies, and 2015 is no exception. The track kicks off with Vinod Eswaraprasad, Software Architect, Wipro, on Creating Plugin Modules for OpenStack Manila Services. He’ll discuss his work on integrating a multi-protocol NAS storage device to the OpenStack Manila service, looking at the architecture principle behind the scalability and modularity of Manila services, and the analysis of interface extensions required to integrate a typical NAS head.

    Ankit Agrawal and Sachin Goswami of TCS will discuss How to Enable a Reliable and Economic Cloud Storage Solution by Integrating SSD with LTFS. They will share views on how to integrate SSD as a cache with a LTFS tape system to transparently deliver the best benefits for Object Base storage, and talk about the potential challenges in their approach and best practices that can be adopted to overcome these challenges.

    Jakob Homan, Distributed Systems Engineer, Microsoft, will present Apache HDFS: Latest Developments and Trends. He’ll discuss the new features of HDFS, which has rapidly developed to meet the needs of enterprise and cloud customers, and take a look at HDFS at implementations and how they address previous shortcomings of HDFS.

    James Cain, Principal Software Architect, Quantel Limited, will discuss a Pausable File System, using his own implementation of an SMB3 server (running in user mode on Windows) to demonstrate the effects of marking messages as asynchronously handled and then delaying responses in order to build up a complete understanding of the semantics offered by a pausable file system.

    Ulrich Fuchs, Service Manager, CERN, will talk about Storage Solutions for Tomorrow’s Physics Projects, suggesting possible architectures for tomorrow’s storage implementations in this field, and showing results of first performance tests done on various solutions (Lustre, NFS, Block Object storage, GPFS ..) for typical application access patterns.

    Neal Christiansen, Principal Development Lead, Microsoft, will present Support for New Storage Technologies by the Windows Operating System, describing the changes being made to the Windows OS, its file systems, and storage stack in response to new evolving storage technologies.

    Richard Morris and Peter Cudhea of Oracle will discuss ZFS Async Replication Enhancements, exploring design decisions around enhancing the ZFS send and ZFS receive commands to transfer already compressed data more efficiently and to recover from failures without re-sending data that has already been received.

    J.R. Tipton, Development Lead, Microsoft, will discuss ReFS v2: Cloning, Projecting, and Moving Data File Systems, presenting new abstractions that open up greater control for applications and virtualization, covering block projection and cloning as well as in-line data tiering.

    Poornima Gurusiddaiah and Soumya Koduri of Red Hat will present Achieving Coherent and Aggressive Client Caching in Gluster, a Distributed System, discussing how to implement file system notifications and leases in a distributed system and how these can be leveraged to implement a client side coherent and aggressive caching.

    Sriram Rao, Partner Scientist Manager, Microsoft, will present Petabyte-scale Distributed File Systems in Open Source Land: KFS Evolution, providing an overview of OSS systems (such as HDFS and KFS) in this space, and describing how these systems have evolved to take advantage of increasing network bandwidth in data center settings to improve application performance as well as storage efficiency.

    Richard Levy, CEO and President, Peer Fusion, will discuss a High Resiliency Parallel NAS Cluster, including resiliency design considerations for large clusters, the efficient use of multicast for scalability, why large clusters must administer themselves, fault injection when failures are the nominal conditions, and the next step of 64K peers.

    Join your peers as well – register now at www.storagedeveloper.org. And stay tuned for tomorrow’s blog on Cloud topics at SDC!


    SMB 3.0 – Your Questions Asked and Answered

    November 19th, 2013

    Last week we had a large and highly-engaged audience at our live Webcast: “SMB 3.0 – New Opportunities for Windows Environments.” We ran out of time answering all the questions during our event so, as promised, here is a recap of all the questions and answers to attendees’ questions. The Webcast is now available on demand at http://snia.org/forums/esf/knowledge/webcasts. You can also download a copy of the presentation slides there.

    Q. Have you tested SMB Direct over 40Gb Ethernet or using RDMA?

    A. SMB Direct has been demonstrated using 40Gb Ethernet using TCP or RDMA and Infiniband using RDMA.

    Q. 100 iops, really?

    A. If you look at the bottom right of slide 27 (Performance Test Results) you will see that the vertical axis is IOPs/sec (Normalized). This is a common method for comparing alternative storage access methods on the same storage server. I think we could have done a better job in making this clear by labeling the vertical axis as “IOPs (Normalized).”

    Q. How does SMB 3.0 weigh against NFS-4.1 (with pNFS)?

    A. That’s a deep question that probably deserves a webcast of its own. SMB 3 doesn’t have anything like pNFS. However many Windows workloads don’t need the sophisticated distributed namespace that pNFS provides. If they do, the namespace is stitched together on the client using mounts and DFS-N.

    Q. In the iSCSI ODX case, how does server1 (source) know about the filesystem structure being stored on the LUN (server2) i.e. how does it know how to send the writes over to the LUN?

    A. The SMB server (source) does not care about the filesystem structure on the LUN (destination). The token mechanism only loosely couples the two systems. They must agree that the client has permission to do the copy and then they perform the actual copy of a set of blocks. Metadata for the client’s file system representing the copied file on the LUN is part of the client workflow. Client drag/drops file from share to mounted LUN. Client subsystem determines that ODX is available. Client modifies file system metadata on the LUN as part of the copy operation including block maps. ODX is invoked and the servers are just moving blocks.

    Q. Can ODX copies be within the same share or only between?

    A. There is no restriction to ODX in this respect. The resource and destination of the copy can be on same shares, different shares, or even completely different protocols as illustrated in the presentation.

    Q. Does SMB 3 provide API for integration with storage vendor snapshot other MS VSS?

    A. Each storage vendor has to support Microsoft Remote VSS protocol, which is part of SMB 3.0 protocol specification. In Windows 2012 or Windows 8 the VSS APIs were extended to support UNC share path.

    Q. How does SMB 3 compare to iSCSI rather than FC?

    A. Please examine slide 27, which compares SMB 3, FC and iSCSI on the same storage server configuration.

    Q. I have a question between SMB and CIFS. I know both are the protocols used for sharing. But why is CIFS adopted by most of the storage vendors? We are using CIFS shares on our NetApps, and I have seen that most of the other storage vendors are also using CIFS on their NAS devices.

    A. There has been confusion between the terms “SMB” and “CIFS” ever since CIFS was introduced in the 90s. Fundamentally, the protocol that manages the data transfer between and client and server is SMB. Always has been. IMO CIFS was a marketing term created in response to Sun’s WebNFS. CIFS became popularized with most SMB server vendors calling their product a CIFS server. Usage is slowly changing but if you have a CIFS server it talks SMB.

    Q. What is required on the client? Is this a driver with multi-path capability? Is this at the file system level in the client? What is needed in transport layer for the failover?

    A. No special software or driver is required on the client side as long as it is running Windows 8 and later operating environment.

    Q. Are all these new features cross-platform or is it something only supported by Windows?

    A. SMB 3 implementations by different storage vendors will have some set of these features.

    Q. Are virtual servers (cloud based) vs. non-virtual transition speeds greatly different?

    A. The speed of a transition, i.e. failover is dependent on two steps. The first is the time needed to detect the failure and the second is the time needed to recover from that failure. While both a virtual and a physical server support transition the speed can significantly vary due to different network configurations. See more with next question.

    Q. Is there latency as it fails over?

    A. Traditionally SMB timeouts were associated with lower level, i.e. TCP timeouts. Client behavior has varied over the years but a rule-of-thumb was detection of a failure in 45 sec. This error would be passed up the stack to the user/application. With SMB 3 there is a new protocol called SMB Witness. A scale-out SMB server will include nodes providing SMB shares as well those providing Witness service. A client connects to SMB and Witness. If the node hosting the SMB share fails, the Witness node will notify the client indicating the new location for the SMB share. This can significantly reduce the time needed for detection. The scale-out SMB server can implement a proprietary mechanism to quickly detect node failure and trigger a Witness notification.

    Q. Sync or Async?

    A. Whether state movement between server nodes is sync or async depends on vendor implementation. Typically all updated state needs to be committed to stable storage before returning completion to the client.

    Q. How fast is this transition with passing state id’s between hosts?

    A. The time taken for the transition includes the time needed to detect the failure of Client A and the time needed to re-establish things using Client B. The time taken for both is highly dependent on the nature of the clustered app as well as the supported use case.

    Q. We already have FC (using VMware), why drop down to SMB?

    A. If you are using VMware with FC, then moving to SMB is not an option. VMware supports the use of NFS for hypervisor storage but not SMB.

    Q. What are the top applications on SMB 3.0?

    A. Hyper-V, MS-SQL, IIS

    Q. How prevalent is true “multiprotocol sharing” taking place with common datasets being simultaneously accessed via SMB and NFS clients?

    A. True “multiprotocol sharing” i.e. simultaneous access of a file by NFS & SMB clients is extremely rare. The NFS and SMB locking models don’t lend themselves to that. Sharing of a multiprotocol directory is an important use case. Users may want access to a common area from Linux, OS X and Windows. But this is sequential access by one OS/protocol at a time not all at once.

    Q. Do we know growth % split between NFS and SMB?

    A. There is no explicit industry tracker for the protocol split and probably not that much point in collecting them either, as the protocols aren’t really in competition. There is affinity among applications, OSes and protocols – MS products tend to SMB (Hyper-V, SQL Server,…), and non-Microsoft to NFS (VMware, Oracle, …). Cloud products at the point of consumption are normally HTTP RESTless protocols.