window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'UA-16803030-1');

Is Cisco the New 800 Pound Gorilla of VDI?

I came across an article recently that asked if Cisco was the new 800 pound gorilla of client virtualization. Now Cisco has long been labeled as the 800 pound gorilla of networking, but as a relative newcomer to the data center and Virtual Desktop Infrastructure (VDI) space, could they be crowned the heavy-weight champion already? And what is an 800 pound gorilla anyway?

While the picture certainly lends some creative imagery to the phrase, urbandictionary.com defines it as “A seemingly unbeatable presence always to be reckoned with; whose experience, influence, and skill threatens to defeat competitors with little effort.” I am sure the expression can be traced back to the riddle: “Where does an 800 pound gorilla sleep?” with the answer being “Anywhere it wants to.” However, in actuality, gorillas only grow to be at most about 450 pounds.

So has Cisco earned this title yet? Client virtualization is still an emerging market, but with Cisco’s hat in the ring, you can bet more and more companies will be hearing about the benefits of VDI, as the powerful engine of Cisco’s direct sales force and channel partners take the messaging to the street. This alone will drive growth in the client virtualization market as a whole, giving legitimacy to competitive solutions as the concept becomes more mainstream thanks to Cisco. With Cisco already demonstrating its ability to deliver superior data center solutions with the Unified Computing System (UCS) platform back in the server room rack, having an end-to-end solution with end point devices on the desktop is a play that is very familiar to Cisco from their Unified Communications IP phone systems… and Cisco is now the number one provider of enterprise phone systems in the world.

Add to that the differentiating architecture of Cisco’s Virtualization Experience Infrastructure (VXI), which is a combination of new products and partner solutions to deliver rich media content to VDI end users without compromising the concept of the thin client, and Cisco pulls into its virtualization solution the success and experience of Unified Communications. Can you hear Cisco beating its chest?

vSphere 5 High Availability: Bring on the Blades

vSphere 5 has many new and exciting features. This post will concentrate on High Availability(HA) and how it affects blade designs. While HA is certainly not new, it has been rewritten from the ground up to be more scalable and flexible than ever. The old HA software was based on Automated Availability Manager (AAM) licensed from Legato. This is why HA had its own set of binaries and log files.

One of the problems with this “now legacy” software was the method it used to track the availability of host resources. HA prior to vSphere 5 used the concept of primary nodes. There were a maximum of (5) primary nodes per HA cluster. These nodes were chosen by an election process at boot time. The (5) primary nodes kept track of the cluster state so that when an HA failover occurred, the virtual machines could restart on an available host in the cluster. Without the primary nodes, there was no visibility into the cluster state. So, if all (5) primary nodes failed, HA could not function.

This was not usually an issue in rackmount infrastructures. However, it posed some challenges in a blade infrastructure where a chassis failure can cause multiple blades to fail. Blade environments should typically have at least two chassis for failover reasons. If there was only a single chassis providing resources for an HA cluster, that single chassis failure could cause an entire cluster outage. You’ll seen in the diagram below that just because multiple chassis are used does not mean that the entire HA cluster is protected.

 

image

 

In this case, two chassis are used and populated with blades. However, the HA primary nodes all ended up on the same chassis. If that chassis were to fail, then HA will not function and the virtual machines will not restart on the remaining hosts in the other chassis. The way to design around this scenario prior to vSphere 5 is depicted in the below diagram.

 

image

 

No more than (4) blades should be part of the same HA cluster within a chassis. This does not mean that the entire chassis cannot be populated. The remaining slots in the chassis could be used for a second HA cluster. This scenario hinders single cluster scalability from a hardware perspective.

 

vSphere 5 HA

Some significant changes were made in vSphere 5 HA that address this challenge. HA was completely rewritten as Fault Domain Manager (FDM). The new HA software is baked into ESXi and does not rely at all on the AAM binaries. The idea of primary nodes has been abandoned. In its place is the concept of a single “Master” node and many (as many as are in the cluster) “Slave” nodes. All the nodes in an FDM based HA cluster can keep track of the cluster state. The “Master” node controls the distribution of cluster state information to the “Slave” nodes. However, any node in the cluster can initiate the HA failover process. The new HA failover process also includes electing a new “Master” node in the event that it is the node that fails. As you can see from the diagram below, a chassis failure can no longer take out an entire HA cluster that is stretched across multiple chassis.

 

image

 

The new FDM HA in vSphere 5 is much more resilient and allows the scaling of large single clusters in a blade environment. While blade architectures were certainly viable before, now those architectures can be utilized even more fully without compromises when it comes to HA.

August TBL Lunch & Learn – Security in a Virtualized World

Join us for lunch to learn more about how your virtual infrastructure changes the way you address security in your environment.  TBL’s Harley Stagner & special guest speaker Bryan Miller of Syrinx Technologies will lead the discussion and allow you the chance to ask questions. 

Click here to attend our August Lunch & Learn

Dates/Locations:

Virginia Beach, VA – August 17th- Ruth’s Chris
Richmond, VA – August 18th- Ruth’s Chris

Topics:

  • How does virtualization affect security?
  • How securing a virtual hosts differs from securing a single app server.
  • Newest compliance guidelines for a virtual infrastructure.
  • Examples of virtual infrastructure security flaws.

Who should attend:

Anyone interested in virtualization and how it affects security in your environment. 

Save your spot! Register now!

Agenda
11:30 AM – Registration
11:35 AM – Order Lunch
12:00 PM – Discussion with Harley & Bryan
  1:30 PM – Event Close

About the speakers

Harley Stagner is the lead VMware Engineer at TBL Networks. He is the first VMware Certified Design Expert (VCDX) in Virginia and just the 46th person worldwide with that title. Harley is also the author of Pro Hyper-V, which was published in 2009.

Bryan Miller is President of Syrinx Technologies, which provides systems and network security auditing services . His passion is performing penetration tests on client networks, applications and computers. Bryan has over 25 years experience in the IT industry, including higher education, government, banking,  and three different local VARs .

Quest for the Perfect Social Platform–Part 1

If there is one thing we do at TBL, it’s eat our own dog food. But, to be fair, I think it’s a little more than that. One of the things that makes us so unique is that we make a living delivering solutions to clients who are just like us. Our focus is not taking down large federal equipment resell contracts or delivering services to the Fortune 50, but rather developing solutions for companies and solving problems. The interesting piece is we need look no farther than our front door for inspiration on what solutions businesses need to solve today’s problems. It is in that spirit that I begin this series – TBL’s own search for the perfect social platform.

 

Let’s introduce the contenders. Most everyone who will read this blog is familiar with Microsoft SharePoint. SharePoint has come a great distance since its debut. It is arguably one of the more prevalent intranet portal platforms in use today and offers models for both on-premise and hosted consumption.

 

 

A potentially less known, but no less valid, contender is Chatter from Salesforce.com. TBL’s runs many of its operations from a Salesforce.com database so the tight integration from Chatter is most certainly attractive.

 

image

 

And the new entry to the field, Cisco Quad. We have placed the order for our Quad licensing and the Cisco UCS B-Series blades that will support it and are just awaiting shipment. Now I know what you’re thinking…TBL is a Cisco reseller and delivers Cisco solutions so clearly Quad is going come through as the victor. While I can’t deny the first two points, I hope the trials and tribulations you will witness through these posts will be evidence to the fact that we took a hard look at each solution.

 

image

 

Let the games begin!

Four Things Summer Movies Taught Me – About Virtualization

Summertime brings back lots of memories for me.   Lazy days at the beach.  Working as a bagger at a grocery store.  Long car rides to visit family.  (Note to readers: Four people driving in a 1982 Nissan Sentra for eights hours = not optimal).

Of course, summertime also brings back memories of great summer blockbusters.  Whereas I don’t have as much time to watch movies as I did when I was younger, I can look back and see lessons about virtualization that were not apparent in the past.


“I feel the need … the need for speed” – Performance THEN Capacity

 

I learned a lot of things from Top Gun – the Navy is awesome, volleyball is to be played sans shirts, and that you can take a highway to the Danger Zone.

In addition, Maverick and Goose taught me the importance of the need …. the need for speed.  With virtualization, it is important to consider performance before you consider capacity.  In planning your physical infrastructure, it is not enough to not focus on having lots of available storage, but to make sure that your infrastructure can perform to serve the particular needs of your environment.

“You’re going to need a bigger boat” – Importance of Storage and Scalability

 

http://www.youtube.com/watch?v=8gciFoEbOA8&feature=player_embedded

 

This is not to say that capacity planning is not important for virtualization.  Once you have gauged the performance needs, you can plan your storage solutions accordingly.  With capacity planning, as opposed to ‘ballparking,” you can ensure that equipment and platform software are appropriate for your environment.  In addition, capacity planning allows to factor scalability into your decision making.  As demonstrated in Steven Spielberg’s  Jaws, while infrastructures are scalable, it is not unfortunate for Quint that boats are not.

“Nobody puts Baby in a corner.” – Storage Options for Virtualization

 

Whenever I see this scene from Dirty Dancing, I generally think of two things: 1) I would rather be watching Roadhouse 2) The storage platform is the foundation of your virtual infrastructure. 

With storage, your two main categories are Block storage and File system storage. However, don’t let yourself to be placed in a corner with Baby (or go to her plastic surgeon).  You don’t have to select this false choice, as there are unified arrays that provide for your infrastructure’s current needs, but also provide flexibility for future growth. Don’t buy the false choice of storage options, and you will have the time of your life.

“Do or Do not. There is no try.” – No shortcuts in virtualization

 

With virtualization, there is a great temptation to take shortcuts.  The road to virtualization can take a while, and there often is pressure to cut corners on your infrastructure.  Yoda would not want you to give in to this temptation, and neither do we.  As illustrated by The Empire Strikes Back, and further illustrated by the deeds and mustache of Bad Harley, you need to fully commit to a proper planning process.  “Trying” to construct an environment without thinking ahead will only cause you more problems down the road. 

While the summer movies might appear to be concerned with superheroes and big explosions, there could be lessons about your virtual infrastructure right in front of you.

Cisco TelePresence Video ATP

Cisco Recognizes TBL Networks TelePresence Video Express Qualifications

Congratulations to TBL Networks, Inc. for meeting all ATP program requirements and criteria necessary to earn the designation of Cisco ATP – Cisco TelePresence Video Express Partner in the USA.

TBL Networks, Inc. has met the rigorous Cisco certified personnel levels required for a ATP – Cisco TelePresence Video Express Partner. This helps ensure that TBL Networks, Inc. sales and support organizations are better prepared to properly sell, design, install, and support the ATP program specific technology and products.

This is an outstanding accomplishment for TBL Networks, Inc. and demonstrates their desire to develop expertise in this market. TBL Networks, Inc. and the Cisco account management team will continue working together to develop and enhance their mutual capabilities to support TBL Networks, Inc. and its customers.

TBL Networks, Inc. will be recognized for this specialization in the Cisco Partner Locator, located at: http://tools.cisco.com/WWChannels/LOCATR/jsp/partner_locator.jsp

Cisco values the commitment and expertise that TBL Networks, Inc. has demonstrated and looks forward to working together.

Cisco Partner Locator

A Structured Virtual Infrastructure Approach Part IV: Shared Storage Options

The storage platform in a virtual infrastructure serves as most important foundation piece of the infrastructure. There are certainly many options to choose from. Those storage options generally fall into two main categories. Block storage and File System storage. Let’s take a look at these two categories.

Block Storage

This method of providing shared storage to a VMware cluster has been supported the longest. At its core, block storage presents a set of physical disks as a logical disk to a host (ESX server in this case). This is a very well understood method of providing storage for the virtual infrastructure. There are a couple of protocols that we can use to provide this type of storage: Fibre Channel and iSCSI.

Fibre Channel

  • Fibre Channel uses a dedicated Fibre Channel fabric to provide connectivity for the storage.
  • Fibre Channel was built from the ground up as a storage protocol.
  • Fibre Channel is the most mature protocol for block storage presentation.

iSCSI

  • iSCSI can use the same network fabric as your LAN servers. However, it is best to use a separate Ethernet fabric.
  • iSCSI is an IP based storage protocol that utilizes the existing TCP/IP stack.
  • iSCSI is a relatively new protocol for block storage.

The protocol chosen to support the Block Storage infrastructure will depend on a number of factors that go beyond the scope of this post. I will say that if you are building a greenfield environment with the Cisco UCS, it is already utilizing Fibre Channel over Ethernet. So, choosing a Fibre Channel fabric is a good way to go.

File System Storage

This method of providing shared storage to a VMware cluster utilizes the Network File System (NFS) protocol. This method doesn’t provide a logical disk to the host server. The host server is simply connecting to a network share or mount point using the IP network. This certainly offers some advantages in reducing management complexity. This comes at the cost of file system overhead versus providing a block disk to the host.

Which to Choose?

There are block-only storage devices and there are file system-only storage devices. So, which one should you choose?

It was a trick question. You shouldn’t have to choose. There are unified storage arrays (like the EMC VNX series) that offer Fibre Channel, iSCSI, NFS and CIFS from the same array. This is definitely a good way to go for needs today and future scalability tomorrow. We discussed the methods for providing VMware specific storage. I want to focus on one more protocol option in this post. Common Internet File System (CIFS) is the protocol that is used for Windows File Serving. Most of the clients I deal with have Windows File Servers with large hard drives. This can introduce some challenges when virtualizing those servers.

  • A single VMFS datastore can only be 2TB minus 512 bytes. This means a single file system needs to fit within those parameters.
  • Also, large VMDK files are more difficult to manage.
  • Why virtualize the file server at all?

I typically recommend that the files from the file servers be consolidated onto the unified storage array. This offers several advantages:

  • The file system can expand without restrictions placed on it by Windows.
  • There are fewer Windows Servers to patch and maintain if the files are consolidated onto the array.
  • No need to take resources on the VMware infrastructure if the files are consolidated onto the array.

If the infrastructure typically uses Linux file servers, NFS can be used for the same purpose.

Block-only or File System-only storage arrays hinder flexibility in the infrastructure. Shouldn’t the storage platform be as flexible as the virtual infrastructure can be?

The Fight to Cure Cancer – One Year Later

 On July 1, 2010 TBL Networks began a partnership with the World Community Grid. The World Community Grid allows organizations with idle compute capacity to donate it for use in research projects ranging from cancer research to clean energy. When idle, a member computer will request data on a specific project from World Community Grid’s server, and perform computations on this data, sending the results back to the server, and then ask the server for new work. Each computation that a computer performs provides scientists with critical information that accelerates the pace of human discovery. On the first day of last July, TBL Networks fired up a 40 machine Virtual Desktop Infrastructure (VDI) environment on our Cisco Unified Computing System (UCS) dual B-series blade farm and dedicated all those machine’s computing power to find a cure for cancer.

Back in December, we reported on our results after nearly half a year of cooperation with WCG.   TBL had donated 7 years and 201 days of computing power using Cisco UCS. This partnership had allowed us to return 31,882 results to cancer researchers ranking us #1,777 of the over 300,000 organizations participating on the World Community Grid.

On July 1, 2011, TBL Networks reached the first anniversary of our partnership with the World Community Grid.  The 365 days of donated capacity had resulted in the nearly nineteen years of computing power – 18 years, 352 days and six hours to be exact.  With 95,993 results returned, TBL Networks is now ranked 546 out of 561,794 members throughout the world.

At TBL, we believe it is important to find uses for technology that not only improve the way we work, but also how we live. That’s not limited to how we balance our own work and personal lives, but how we can use our own technology to help others as well… now that’s techumanity.

What is your Social Media Strategy?

Did you know that:

  • 78% of 18-34 year olds
  • 71% of 35-44 year olds
  • 59% of 45-54 year olds

…have either a Facebook or MySpace account?

 

Did you know that:

  • Average number of tweets per hour is 1.3 million
  • 3.5 billion pieces of content shared each week on Facebook
  • 35 million Facebook users update their status each day

 

Your customers are talking…

image

image

image

 

…the question is…are you listening?

 

TBL is developing a professional services engagement process to assist our customers in assessing what their clients are saying right now, developing a plan to identify and address public feedback, and create strategies to utilize social mediums to drive new sales and better customer loyalty.

We’re looking for a few clients to start down this journey. Drop me an email if you think you might be interested.

Business Video–Not Just for Teleconferencing

In the past, business video was mostly another way to say “teleconferencing.”  If that was not the case, business video meant purchasing expensive equipment that was difficult to use. Furthermore, this equipment then manufactured a product that was difficult to market. However, in the age of YouTube, this is no longer the case.  If you have access to a computer and a smartphone, you can now produce video that can be streamed across the world to your present and future customers.

Here are some ways that  companies are using video for their business.

RECRUITING

In the recruiting process, companies need to promote more than just a list of qualifications and requirements to their prospective employees.  Companies also need a way to present their company culture, in addition to finding a way to stand out from the competition.

One company that has embraced video for recruitment is Sodexo, “a global leader in integrated food and facilities management.”  They have a YouTube channel, SodexoCareers, dedicated to showing why you should work for their company.

While business video can be used for recruiting, it can also be used for when an employee leaves.  Recently, Snagajob, “the world’s only company totally devoted to fulfilling the dreams of hourly workers and those who employ them,” made a video to say “goodbye” to one of their longest tenured employees. This video was featured on their YouTube channel.

http://www.youtube.com/watch?v=aRWm5_AX6Cc&feature=player_profilepage

SPEAK DIRECTLY TO YOUR CUSTOMERS

Have you ever wanted to literally speak to your customers?  With business video, you can.

Joyner Fine Properties is a “premiere real estate company in the Greater Richmond, VA area.”  Utilizing the video blogs on their YouTube channel, Joyner President Bill White can talk directly to his customers about the current real estate market.

SHOWCASE OTHER TALENTS

Yes, TBL Networks is an award winning technology solutions provider, but our employees have other talents that they want to share with the world.

At the conclusion of a recent Ask Harley Twitter session, Harley Stagner, lead VMware engineer and VCDX, and Mr. TBL, the masked spirit of TBL Networks, wanted an opportunity to demonstrate their musical abilities.

With the help of a laptop, webcam and Cisco Show and Share, we were able to provide a live broadcast of a Guitar Hero performance that will be remembered for the ages.


http://www.youtube.com/watch?v=32WzkPyDSCM&feature=player_profilepage

With business video, you are no longer limited to teleconferencing, but only limited by what you don’t want to do.