xsanguy's picture

Mavericks OD Replica problems on upgrade

Upgrading ML Xsan MDCs to Mavericks - same issue on every system we build in the lab and several clients - OpenDirectory Replica does not survive. Attempts to re-create the OD replica fail with this message:

2013-12-23 07:58:15 +0000 NSMutableDictionary *_getRootDSE(const char *): rootDSE not found
2013-12-23 07:58:15 +0000 Error: Unable to determine the master's software version.

And yes I've tried the SSH fixes. They don't seem to do anything.

abstractrude's picture

Mac Pro 2013 Processor Upgrade Confirmed by OWC

Confirmation came from OWC today, you can indeed swap processors with the new Mac Pro. This is huge once these prices start falling down the road. They used an Intel E5–2667, this is interesting as upgrade options will be very interesting when these chips prices drop in a few years.

abstractrude's picture

ProRes White Paper Updated

Apple has updated their ProRes white paper with information on bandwidth for 4K and 5K video streams. You find the whitepaper here.

abstractrude's picture

Mac Pro 2013 Article Roundup

The new Mac Pro has already seen a ton of reviews and information. Here is a collection of a few great links.

Probably the best technical review from AnandTech. For a less geeky review, there is a good general review from Macworld, which helps explain why the 8 core chip is probably the best bet for most users. If you want to dive deeper into the different CPU configuration options and what they mean, check out this post from iOS Dev Marco Arment. Understanding the Turbo feature on these new chips is really important. There have been some reviews critical of the new machine, Dave Girard at Arstechnica has some interesting points.

Finally, for those of you interested in future upgrade/exapandibility of the Mac Pro. Check out this great teardown from iFixIt.

aaron's picture

Migrate Metadata From Xsan to StorNext

Charles Edge writes about the snmetadump command on his blog Krypted:


aaron's picture

Using the Mac Pro (Late 2013) on its side

From Apple KB http://support.apple.com/kb/HT6099

Although the Mac Pro (Late 2013) is designed to operate in an upright position, you can also use it on its side.

The Mac Pro (2013) has a fan system capable of cooling the computer in a vertical or horizontal orientation as long as you follow these guidelines.

  • Provide enough space at each end of the computer for unrestricted airflow into the base and out the exhaust at the top. Make sure that the air intake and exhaust ports are not covered.
  • When using multiple Mac Pro (Late 2013) computers, do not direct the exhaust at the top of one Mac Pro towards the intake of another system. Place the computers side by side with a gap of at least several inches between them.
  • When on its side, secure the Mac Pro (Late 2013) to be sure that it doesn't roll. Place the computer on a protective surface that will not scratch or damage the enclosure. Note: The Apple Limited Warranty does not cover cosmetic damage to the enclosure.
  • Orient the computer so that the Input/Output (I/O) panel remains accessible during use.
Apple Knowledge Base's picture

Using the Mac Pro (Late 2013) on its side (Apple KB)

Although the Mac Pro (Late 2013) is designed to operate in an upright position, you can also use it on its side.

Read more: http://support.apple.com/kb/HT6099

metadreamer's picture

Xsan vs GigE NAS?


We're looking at upgrading our Xsan (and all of its clients to new Mac Pros) as it's a 5 year old install and locked to 10.6.8.

I know that some places are marketing "video workflow" optimized NAS solutions over 10 gig E as an alternative. I assume these boxes just use standard AFP and file level storage.

Does anyone have a comparison of using one of those vs. Xsan? Seems like a higher theoretical bandwidth vs 4 Gb fibre (at least that's what our current switch and cards can handle)... But how does Final Cut Pro X and/or Premiere work with a file level storage system vs. Xsan? I assumed that Xsan would offer maximum compatibility for collaborating on files but I'm not sure if any changes to Final Cut X or these newer NAS boxes mitigated any issues.

aaron's picture

Legacy Xsanity content has been migrated

We've been able to migrate the eight years (eight years!) of legacy Xsanity posts/stories over to our new site. Comments, too. And now it is certainly bedtime.

Please keep the suggestions and comments coming.

BlackF1re's picture

LUN config for Promise Ex30 (non Apple)

Good Evening

I'm about to configure a Promise Ex30 (non apple) for an Apple Xsan Environment (Yes, Promise already confirmed that works with the hardware i have, like a Qlogic 5800, Atto and LSI cards)

I was wondering about the LUN Configuration.

The system is a 24 bay, dual controller, HDD NL-SAS of 3 TB.

What configuration do you recommend for performance?
Workflow is for both HD Full HD ProRes, and 4k XAVC (So 30 - 40 MB/s for every layer)
But i could also manage a layer of SonyRAW 4K from an F55 in 3840x2160 50p, that means 500 MB/s

2 LUN of 11 disks Raid 5 + 1 dedicated spare?
4 LUN of 6 disks Raid 5 without spares?

I have a dedicated metadata array 4 Gbit, cause of the presence of multiple volumes

The ALUA should be enabled for better performance? (Clients will be 10.9 / 10.8.5)
What about the stripe size?

Thank you all for your time.


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