Wednesday Aug 18, 2010

VDI In The Sky

On a recent trip (my first as an employee!) to Oracle HQ, I decided to test out Oracle VDI 3.2 from an airplane.  Sure, everyone (who can...if the latency will allow their protocol to work that is) has done this, but hey it's been my first trip since being part of the Big O.  One could say I don't travel like I used to. 

Unfortunately, I was a bit ill prepared to do this demo from a battery standpoint on my video camera, but still managed to get some screen caps with my phone.  On my next trip I'll bring my flip fully charged to get the full sequence.  But I'll tell you, from some 30K thousand feet, 300 ms (plus) latency, it did awesome.  While it won't surprise most to know I really believe in our technology, I did all of this on my own dime.  From the the gogo inflight internet to the first class upgrade.  Hey, us tall folk need space to work!

 My Building:  (The "Big Building" if you know what I mean)


Somewhere over the Mojave:


And Let's Connect:


Picking my Windows 7 Pool: 


And here we are: 


This is the Virtual Desktop Client in windowed mode. It's hard to make out the latency, but it's over 300: 



OVDC and MTU

A few years ago I wrote about the "Importance of MTU" as it pertains to Sun Ray clients.  Things changed with the Sun Ray and in most circumstances, we can detect and adjust the Path MTU accordingly.  While the Oracle Virtual Desktop Client (OVDC) is designed to be just like a physical Sun Ray, for various reasons it currently lacks the Path MTU Discovery (PMTUD) code.  In short, what's old is new again..Or is it what's new is old again.  Either way, you need to set the MTU for the best experience (improper MTU demo video below).

You can set the MTU with a slider from the network tab:

Unfortunately the slider isn't as precise as you might need it and seems to jump in blocks ranging from 6-8 (i.e. try to set yours like mine with an MTU of 1333 and good luck!).  If somewhere within that range lies the your value, you can use the command line to set a precise MTU.  Simply run the vdc command with the --mtu argument.

For Windows:

C:\\Program Files\\Oracle\\Virtual Desktop Client\\vdc --mtu 1333

For OS X:

/Applications/Oracle Virtual Desktop client.app/Contents/MacOS/vdc --mtu 1333

The MTU setting is sticky and will stay for all subsequent connections, unless of course you use the slider and change it.

Quick (no audio) Video of what an improperly set MTU looks like:

Thursday Jul 15, 2010

SRS 5: Big updates disguised in a patch

Greetings Think Thin Readers,

Those who watch things like SunSolve for new patch releases noticed starting last Saturday that a slew of new patches began showing up.  If you read the "fixes" in the patch read me files, that's exactly what it looked like...a patch.  But there's so much more.  Beyond numerous bug fixes ("black screens", High CPU using Flash or USB redirection, etc) these patches enable some great new features, details of which were in a press release today.  Just some of the highlights:

New Platform Support:

  • Support for Oracle Enterprise Linux as a Sun Ray Server Software Platform
    • Continued support for Solaris, RHEL, and SLES
Oracle Virtual Desktop Client 2.0 (formerly SDAC)
  • Renaming & Oracle branding of the Sun Desktop Access Client (SDAC) to Oracle Virtual Desktop Client (OVDC)
  • New Apple OS X Version of the OVDC 
    • Continued support for Windows XP, Vista, 7
  • Smart card support for OVDC
    • Hot Desk from your PC or Mac with a smart card reader to a Sun Ray Thin Client
  • Support for Upstream Audio
  • Support for Client Serial Port Mapping

Sun Ray Connector for Windows OS

  • Upstream Audio
    • bidirectional audio capabilities for Windows XP and Windows Server 2003
    • Requires SRSS 4.2 and SRWC 2.2 patches, version -03 or later, and the SRWC Components 1.1 patch, version -01 or late
    • Note upstream audio is off by default.  New uttsc argument required -r soundin:(low|medium|high)
  • Multiple pesky bug fixes ("Double login" for 2008 session directory, black screens, Flash and USB-R fixes)

Install the latest patches per platform, download the new OVDC and let us know what you think!

And as always...Stay Tuned.  Hopefully making noise about things like this will put to rest any doubt that Oracle is committed to it's Desktop Virtualization Portfolio (Sun Ray, SGD, Oracle VDI).


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Think Thin is a collection of bloggers that work with Oracle's Virtual Desktop portfolio of products.

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