First thing that comes to mind is that 6.5.4.4 is a really old release of code.  This cluster should be very capable of running the latest releases, and going to 7.0.2.9 plus the latest SMB patch would be my recommendation.  There's an even better reason to go to that release: larger transfer sizes with SMB2.  In 6.5, the transfer size for SMB2 was 64KB.  In 7.0 and later, it's 1MB.  So, higher throughput at a protocol level, which would give you higher theoretical transfer speeds.  I know I'm talking about SMB2 here, and you're using NFS... was that a requirement with Premiere?  I would've assumed that it would support SMB, but haven't tested that directly.  I agree with what Peter said above and that whitepaper is going to help a lot.  But, the version of code is only part of it.  You probably want to set up the directories where you're storing your video content for streaming layout.  That's something you can do from the SmartPools settings page, in the default settings, with a file pool policy, or even from File Explorer (but I recommend using SmartPools where possible).  The reason for streaming is that it'll use as many drives as possible for streaming media workflows in order to deliver that higher read throughput (and 4K obviously has higher throughput requirements, depending on the codecs being used).
Hello  I have a question about playing 4k videos with adobe premiere:  System: Isilon OneFS v6.5.4.4 B_6_5_4_76(RELEASE) installed on all nodes. Node 1    Isilon IQ 12000x Node 2    Isilon IQ 12000x Node 3    Isilon IQ 12000x Node 4    Isilon IQ 12000x Node 5    Isilon IQ 12000x Node 6    Isilon IQ Accelerator-x   Construction: The PC (Windows 7 Ultimate 64bit, 64GB Ram, SSD) is over optical fiber (10G Myricom Myri-10G Ethernet adapters) connected directly to the Isilon, it depends no switch in between.  MTU size is set to the Windows network card and for the subnet ptp.videostorage.xxx.local to 9000. As connection software we use Open Text NFS Solo 14 and set the following Registry Keys. [HKEY_LOCAL_MACHINE \ SOFTWARE \ Hummingbird \ Connectivity \ 14:00 \ NFSClient]               "Default Protocol" = dword: 00000001               "Maximum Read Parallel" = dword: 00000010               "Maximum Write Parallel" = dword: 00000010               "Maximum Read Transfer Size" = dword: 00080000               "Maximum Write Transfer Size" = dword: 00080000               "MaxTransfer" = dword: 00080000               "Exact File Name Matching" = dword: 00000001               "NoCacheManager" = dword: 00000001      The network drive from the WindowsPC to ISILON file system is mounted with the following parameters.  nfs link z: \\ptp.videostorage.xxx.local\ifs\data\videodata  domain\user PASSWORD /L:c /P:675 /D:775 /R:131072:16 /W:524288:16 /T /3 /persistent:yes /H     Problem: When  we playing  a 4K video (High Definition Video) with Adobe Premiere (V6 and 5) these begin to "stutter" .  After consultation with Adobe, who said Premiere has a video buffer, which is also filled with the upload of the video, but then degrades continuously and the Video beginns to  stutter. Only if we stop the videos the buffer fills up again and the video runs a few seconds normal.  The same Problem is, when we play the Video with Quicktime or an other Videoplayer. As a cross-check we have the Adobe Premiere Project directly start from the hard drive, here it works correctly, the video buffer is always  80%-90% full an the Video runs normal.   If we copy data from the PC <-> Isilon, the transfer rate  is about 2-4GBit/s.    When we play the Video from Isilon the transfer rate is about  500-800MBit/s If we play the Video from the local HD the transfer rate is about 4GBit/s   Is there any way to increase the transfer rate when we play the video directly from Isilon ? Or is this the Maximum Speed ?   with best regards Andi 
Playing 4K videofiles from isilon.