Articles by 'Brian Wagner'

Blog Author - Brian Wagner

Brian has over ten years’ experience in the planning, design, and implementation of technology solutions. He supervises technical specialists at projects, and has spoken at many technical seminars. Brian is an application integration specialist with experience configuring over 1,000 applications to work in multi-user environments, and manages Gotham’s thin client and server consolidation practices.

By Brian Wagner, Posted in Uncategorized

NetScaler 10.5 has been out for a while now, and we have been standardizing on the new version with success. But, what's new in 10.5? Is it worth upgrading my NetScalers? There are over 100 new features in version 10.5, but here are a few notables: 1) NO JAVA - OK, so there is still some Java. But, it is very much out of the way of day-to-day activities. This is a welcome treat for sure which makes administration much easier from any machine without going through hoops. That being said, I am sure the... read more.

  • January 02, 2015

By Brian Wagner, Posted in Uncategorized

VMware recently released updates to both ESX 5.1 and 5.5 that cause the NetScaler VPX to lose networking. ESX 5.1 EP5 and ESX 5.5 Update 2 both cause the issue. The issue is described from Citrix as: NetScaler VPX network connectivity issue on VMware ESXi 5.1.0 2191751 and VMware ESXi 5.5 Build 2143827 is caused by tx_ring_length mismatch, which causes TX stalls. There is a fix, which involves running a command from the console of the VPX: echo hw.em.txd=512 > /flash/boot/loader.con... read more.

  • November 24, 2014

By Brian Wagner, Posted in Security

I've been getting hammered with clients asking about Shellshock. Are the various products they have implemented vulnerable? Is there a fix yet? How can we implement the fix? What is the work effort? While all external facing Linux servers should definitely be patched, the NetScaler can be used to provide protection for your Linux servers now. Even if no fix has been made available yet for your Linux-hosted web application, the NetScaler Application Firewall feature has the ability to look for attempts to... read more.

  • October 08, 2014

By Brian Wagner, Posted in Uncategorized

Today, Citrix XenApp 7.6 was released (and XenDesktop 7.6). It addresses some features that have been "missing" from XenApp since the 7.x platform was released. If this release is all it's cracked up to be, I think you'll see most XenApp customers on 6.x (or those still on 4.5, you know who you are) will be looking to upgrade to 7.6 sooner than later. So, what exactly is in 7.6 that changes this thinking? Connection Leasing - Remember the local host cache? Well most of my clients do, and have noted it... read more.

  • September 30, 2014

By Brian Wagner, Posted in Infrastructure

Windows XP end-of-life (EOL) was highly publicized. Some companies have been in the clear for awhile, others made a mad dash to the finish, while a few are still struggling (http://www.crn.com/news/applications-os/300072525/irs-misses-windows-xp-deadline-inks-extended-support-deal-with-microsoft.htm). But, I can say it has been on people's radar for awhile. Windows 2003 seems to be the sleeper. Windows 2003 will reach EOL in July 2015. Server upgrades are a different type of challenge, as they support ap... read more.

  • August 21, 2014

By Brian Wagner, Posted in Uncategorized

If you've been a Citrix customer for a long time, you have been through the many access iterations over the years: Program Neighborhood NFuse Web Interface StoreFront Starting with NFuse, we have been asked by our clients to customize the interface to integrate corporate branding. Each iteration of the web-based access solutions had the capability to customize the user interface. Each of course had its own method, development languages, and extent of customization capability. But once a user launch... read more.

  • August 21, 2014

By Brian Wagner, Posted in Infrastructure

Citrix was able to converge the management and infrastructure for XenApp and XenDesktop into one product with the release of XenDesktop 7. There are many benefits to having a single architecture and shared infrastructure between the two products. Not advertised, but I believe the most important benefit, is a common feature set and single development thread for both products. This will drive faster innovation and improve support. The product was XenDesktop 7, and new terminology for the supported workloads c... read more.

  • February 18, 2014

By Brian Wagner, Posted in Infrastructure

There are many monitoring solutions on the market, some with specific focus for Citrix environments that tout an "end-to-end" view. But, I've yet to see a single dashboard that shows a user's connection through the NetScaler, Citrix XD/XA, and backend connections to SQL, storage, and other critical components. Splunk can capture data from all of these sources, and index it to your heart's content. But, out of the box you get individual dashboards without the zoomed out view we all crave. That is where Go... read more.

  • February 03, 2014

By Brian Wagner, Posted in Uncategorized

XenDesktop 7 was released in June 2013, and just 5 months later Citrix has released XenDesktop 7.1. XD 7.1 adds support for Windows 8.1 and Windows 2012 R2. It also adds official support for GPU offload. This feature requires XenServer for interaction with NVIDIA GRID cards (K1 and K2) to offload the graphical processing from the virtual machine's processors to the GPU card. This increases end user performance significantly and allows for increased density by lowering vCPU usage. With Citrix releasing... read more.

  • November 07, 2013

By Brian Wagner, Posted in Uncategorized

I sit down with many clients each week to discuss a Windows 7 upgrade, a virtual desktop infrastructure, or a XenApp (RDS) environment to deliver shared desktops or applications. The common theme for all of these projects is that the client is looking for a better way to deliver a desktop compared to how Windows XP was delivered. Sometimes this means leveraging automation with role-based provisioning to virtualize and deliver applications. Or it could mean using VDI or RDS to deliver the new desktop and app... read more.

  • September 30, 2013