brandon's picture

TVN 24's Xsan deployment

I just caught an intriguing success story making the rounds in Apple's Hot News headlines, Xsan Drives 24-Hour News Station. Without delving too deeply into technical detail, the piece covers the application of Xsan technology at TVN 24 in Poland. If you have been following the Xsan-Users mailing list and were curious about those posts originating from Eastern Europe, this article has your answers.

aaron's picture

Questions yet to be answered...

Questions yet to be answered...

  • What's the speed difference between 1 and 2 FC cables?/*
  • Is it better to access the Open Directory server on the public or private network?/*/list
brandon's picture

Practice with Xsan Admin

Did you know you don't need access to a RAID to explore a fully functional Xsan Admin interface? It's really quite easy to walk through the various setup options without any significant hardware investment at all. All you need is a blank piece of storage media to label as an available LUN. A blank FireWire drive is ideal, though amazingly, an item as minimal as a USB key has narrowly sufficed. If you’re comfortable proceeding at your own peril, and if you don’t mind that your mileage may vary, here’s what to do:

xadrdm's picture

Network Port Configurations


Make sure your public network is uppermost in the network port configurations list. This will keep unwanted traffic off your private metadata network. :wink:

brandon's picture

Xsan Administration Courses

Not too long ago, I worked the night shift at my shop, for no reason other than my own choice. I loved sneaking in when no one else was around, dimming the lights, boosting the volume, and figuring out repairs and solutions on my own. And while the spooky late-night life had a certain lone gunman appeal, during the occasional wrestling match with a particularly stubborn problem, I wondered if a bit of formal training would be precisely the shortcut I needed to put a targeted symptom behind me. I suppose at heart I'm a closeted Good Student.

That in mind, it looks like Apple Customer Training has a few relevant shortcuts scheduled -- Xsan Administration courses in the months formerly known as Daisy Duck's nieces: April, May and June. A click of the "Show Schedule" button will tell you that the two April sessions are booked, while May and June are fair game.

For what it's worth, I attended a related-yet-different "Xsan for Pro Video Technician" course with Nick and Ron back in December in Boston, and found it invaluable. My favorite segment was an exercise where the instructors sent us out of the room, then broke various aspects of the working SANs we had built, then brought us back in to find and troubleshoot the problems. The effectiveness of a team approach really hit home -- each of our specialties carved away little pieces of the puzzle, and afterward, I felt much less intimidated about looking into our customers' problems.

So, click that "Add to Cart" button while you can. Initially, $2250 for a certification may seem high, but you'll likely need this kind of exposure to handle day to day maintenance. It may be a modest investment compared to a consultant's fee.

aaron's picture

Welcome to Xsanity!

This is a site dedicated to Apple's Xsan, a new file system promising
fast, scalable, shared storage to video workgroups, IT data centers, and
HPC installations.

At least that's what Apple promises. In reality, Xsan is Apple's most complicated software release to date. Xsan requires tinkering with technologies as diverse as LC-terminated fibre channel cables, multicast DNS, 1080i HD video specifications and more. Few mortals we know have expertise in all these fields.

We founded this site as a community for Xsan users, experts with
individual relevant specialties. Here we can pool our knowledge and maybe
make our jobs just a little easier.

We intend to diversify the leadership of this site by adding moderators from several companies and fields. If you are interested, please write

Aaron, Brandon, Joannou, Nick and Ron

ron's picture

Spontaneous MDC Switching

anyone else seeing this?

ron's picture


De-fragmenting a volume can take a while.......
The process ran overnight for 10.5 hours. This was on a relatively small volume (5TB), single storage pool. approx 2TB of data.Metadata was included in the one pool.
35 000 files were visited and 7500 were defragged.
This was a six seat san in a video production facility that was working with the DV codec.
Frames were being dropped on ingest - after de-frag no dropped frames.


Subscribe to Xsanity RSS