Nick Rintalan

Nick Rintalan is a Lead Architect in the Americas Consulting organization based out of San Francisco, CA.  He has been with Citrix Consulting for the last 10 years, working on some of the largest Citrix deployments in the world.  He has authored several well known whitepapers such as "The Top 10 Items Found by Citrix Consulting on Assessments" and "Best Practices for XenDesktop and XenApp" (CTX132799).  Nick has spoken at Synergy/iForum/Summit and BriForum over a dozen times on topics such as scalability and large farm design considerations.  Before joining Citrix, Nick briefly worked for the IBM Software Group on the WebSphere development team. Nick received Bachelors and Masters Degrees in Computer Engineering from Tulane University in New Orleans.
  1. Making the Citrix License Server (Truly) Highly Available

    Citrix License Server

      I'll begin by saying that this solution is certainly not for everyone.  It adds complexity.  It creates additional management overhead.  It requires NetScaler integration and mildly advanced networking skills.  We have never publicly documented the solution before this week.  But it is absolutely the only bulletproof solution for making our License Server (LS) truly highly available in an active/active fashion without any downtime. And while we ...

    Read More

  2. Citrix Technology Short #2


    Similar to my inaugural "short", here are some things happening in my Citrix world that I believe are worth sharing with the Community: I am still waiting for an email from Shawn Bass explaining why 6 seconds is an acceptable amount of response time. ;) Speaking of Shawn, Helge Klein and Aaron Parker teamed up to write a nice 5 part series on folder redirection (and how ...

    Read More

  3. Citrix Commentary on VMware’s Latest RDSH Scalability Whitepaper


    I have sort of been waiting for this - after all, it's been almost a year since our friends in Palo Alto announced Remote Desktop Session Host (RDSH) capabilities with Horizon (their XenApp-like product if you're not familiar).  But a couple weeks ago, they finally published some performance and sizing "best practices." And since I have done a lot of performance and scalability testing with TS/RDS/XenApp ...

    Read More

  4. Top 10 Items Found by Citrix Consulting on Assessments – XenMobile Edition!

    The XenMobile Top 10

    Déjà Vu and a Trip Down Memory Lane About six years ago to the day, I was conducting my 20th career Infrastructure Assessment Project (IA) for a customer.  As I began writing up the final deliverable, I experienced some serious déjà vu.  It honestly felt like I was writing about the same risks for at least the 20th time! That got me to thinking.  Following our assessments, ...

    Read More

  5. The Death of IOPS – Part 2

    I sort of cheated since there isn't a "Part 1" with this exact same title, but I have my reasons for changing the title and this is partly why I'm writing this second article about the same topic.  The first article is entitled "Citrix Puts Storage 'On Notice'" and can be found here.  In case you haven't had a chance to read it yet, I talked ...

    Read More

  6. Citrix Puts Storage ‘On Notice’!

    That's right - we just put storage throughput and IOPS officially "on notice"!  And in turn (whether we really meant to or not), we made every storage company that got into business over the last ~6 years (since we introduced VDI) to solve the dreaded IOPS problem think twice.  Citrix just threw down the gauntlet and it means we can finally stop talking about IOPS. ...

    Read More

  7. XenMobile Bandwidth

    Overview So how much bandwidth is required for a typical XenMobile user?  More specifically, how much bandwidth does each Android or iOS device consume when running WorxMail?  Great question!  That's precisely what I'll attempt to answer in this article...and "it depends" isn't good enough when you're trying to size WAN links or buy NetScaler boxes for a future XenMobile Enterprise deployment (NOTE: NetScaler is not typically ...

    Read More

  8. Citrix Technology Short – Take #1

    Let's face it - there is a lot going on in our industry these days.  And being a good "Citrix resource" means knowing a lot about Citrix, Microsoft, VMware and a zillion 3rd party products.  It's hard enough to stay on top of what Citrix is doing these days (and I work here!), so I can only imagine what kind of problems it poses for ...

    Read More

  9. Clearing The Air (Part 2) – Thick or Thin Provisioned Write Cache

    Background & History I have been asked about this quite a few times over the years, but since I got asked about it twice this past week know what time it is?  Blog time! ;)  I selfishly need another reference I can point to, but I know this is a controversial topic and a lot of other folks will likely benefit from this info as ...

    Read More

  10. “New” Citrix Best Practices

    Overview There are best practices and then there's reality...I have been saying that for years.  Because I believe too many folks think some best practices are set in stone or should be implemented or followed no matter what the situation.  To be honest, this could not be farther from the truth.  It's why many Professional Services organizations (CCS included) use the phrase "it depends".  There is ...

    Read More