February 11th, 2014
Why the FCoE – iSCSI Debate Continues
This is my first blog post for SNIA-ESF. As a Principal Storage Architect, I have been doing extensive research on the factors that are driving FCoE vs. iSCSI choices over the last several years. The more I dive into the topic, the more intriguing the debate becomes. In fact, this blog is a preview of an upcoming white paper I’m writing and a Webcast SNIA is hosting on February 18th. If you agree this debate is interesting, I encourage you to attend. Details on the Webcast are at the end … Read the rest
January 28th, 2014
Technology continues to advance rapidly. Making sense of it all can be a challenge. At the SNIA Ethernet Storage Forum, we focus on storage technologies and solutions enabled by and associated with Ethernet Networks. Last year, we modified the charters of our two Special Interest Groups (SIG) to address topics about file protocols and storage over Ethernet. The File Protocols SIG includes the prior focus on Network File System (NFS) related topics and adds discussions around Server Message Block (SMB / CIFS). We had our first webcast last November on the topic of SMB 3.0 and it was our … Read the rest
January 7th, 2014
It’s been a bit of a bumpy ride for FCoE, which started out with more promise than it was able to deliver. In theory, the benefits of a single converged LAN/SAN network are fairly easy to see. The problem was, as is often the case with new technology, that most of the theoretical benefit was not available on the initial product release. The idea that storage traffic was no longer confined to expensive SANs, but instead could run on the more commoditized and easier-to-administer IP equipment was intriguing, however, new 10 Gbps Enhanced Ethernet switches were not exactly inexpensive with … Read the rest
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 … Read the rest
November 6th, 2013
SUSE, founded in 1992, provides an enterprise ready Linux distribution in the form of SLES; the SUSE Linux Enterprise Server. As of late last month (October 22, 2013), SUSE announced that SLES 11 with service pack 3 now supports the Linux client for NFSv4.1 and pNFS client. This major distribution joins RedHat’s RHEL (RedHat Enterprise Linux) 6.4 in supporting enterprise quality Linux distributions with support for files based NFSv4.1 and pNFS.
For the adventurous, block and object pNFS support is available in the upstream kernel. Most regularly maintained distributions based on a Linux 3.1 or better kernel (if not … Read the rest
September 26th, 2013
Previously, I’ve blogged about the VN2VN (virtual node to virtual node) technology coming with the new T11-FC-BB6 specification. In a nutshell, VN2VN enables an “all Ethernet” FCoE network, eliminating the requirement for an expensive Fibre Channel Forwarding (FCF) enabled switch. VN2VN dramatically lowers the barrier of entry for deploying FCoE. Host software is available to support VN2VN, but so far only one major SAN vendor supports VN2VN today. The ecosystem is coming, but are there more immediate alternatives for deploying FCoE without an FCF-enabled switch or VN2VN-enabled target SANs? The answer is that full FC-BB5 FCF services could be provided … Read the rest
August 29th, 2013
Our VN2VN Webcast last week was extremely well received. The audience was big and highly engaged. Here is a summary of the questions attendees asked and answers from my colleague, Joe White, and me. If you missed the Webcast, it’s now available on demand.
We are an extremely large FC shop with well over 50K native FC ports. We are looking to bridge this to the FCoE environment for the future. What does VN2VN buy the larger company? Seems like SMB is a much better target for this.
Answer #1: It’s true that for large port count SAN … Read the rest
August 12th, 2013
“Software Defined” is a label being used to define advances in network and storage virtualization and promises to greatly improve infrastructure management and accelerate business agility. Network virtualization itself isn’t a new concept and has been around in various forms for some time (think vLANs). But, the commercialization of server virtualization seems to have paved the path to extend virtualization throughout the data center infrastructure, making the data center an IT environment delivering dynamic and even self-deployed services. The networking stack has been getting most of the recent buzz and I’ll focus on that portion of the infrastructure here.
What is driving … Read the rest
April 30th, 2013
In this third and final blog post on NFS (see previous blog posts Why NFSv4.1 and pNFS are Better than NFSv3 Could Ever Be and The Advantages of NFSv4.1) I’ll cover pNFS (parallel NFS), an optional feature of NFSv4.1 that improves the bandwidth available for NFS protocol access, and some of the proposed features of NFSv4.2 – some of which are already implemented in commercially available servers, but will be standardized with the ratification of NFSv4.2 (for details, see the IETF NFSv4.2 draft documents).
Finally, I’ll point out where you can get NFSv4.1 clients with support for pNFS … Read the rest
April 18th, 2013
Seamus Crehan, President, Crehan Research Inc.
2012 turned out be another very strong growth year for 10 Gigabit Ethernet (10GbE), with the data center switch market and the server-class adapter and LAN-on-Motherboard (LOM) market both growing more than 50%. Broad long-term trends such as virtualization, convergence, data center network traffic growth, cloud deployments, and price declines were helped further by more specific demand drivers, many of which materialized in the latter half of 2012. These included the adoption of Romley servers, expanded 10GBASE-T product offerings for both switches and servers, 10GbE LOM solutions for volume rack servers (which … Read the rest