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December 21, 2009


The New and Improved Mozy for Mac 1.6

by Dan

Of course, it can’t really be both new and improved. Logically, it has to be one or the other. It’s just that I’m excited about the 1.6 release of Mozy’s Mac client. It was finished last week and the response has been very positive.

It seems that with #Mozy for #Mac 1.6 it’s finally reliable. Awesome! — @donut2d

Latest Mozy update (1.6) on Mac OS X is a major improvement – it actually works, and doesn’t suck out all of your RAM. — @mmetcalfe

Our last few releases, while making improvements in many areas, seemed to have lingering and subtle problems. With the 1.6 version, we hope to have finally put them behind us.

We turned on auto-update today. If Mozy hasn’t updated itself yet, please feel free to grab the latest version of MozyHome (or MozyPro) and let us know what you think.

Official List of Changes

You can see the official list at the pages linked above. Mozy only makes the list of changes available for the current release, so I’ve copied them here for the future. You can see the changes in Mozy for Mac 1.4 and Mozy for Mac 1.5 too.


  • Removed dependency on Spotlight since Spotlight queries are unreliable under certain circumstances
  • Changes to backup selections are now saved automatically
  • Reduced memory usage
  • Decrease size of file
  • Improved the performance of the Configuration window
  • Improved support for Snow Leopard and fixed issues caused by Snow Leopard’s 64-bit architecture
  • Improved interaction between Mozy’s preferences and Snow Leopard; Mozy’s preferences no longer require System Preferences to be re-started
  • Improved the use of temporary files
  • Improved reports in Admin Console for Pro users
  • Improved support of our external drive feature by addressing edge cases that can cause stability issues
  • Improved feedback when setting a preference to an invalid value
  • Improved error handling when an auto-update fails to download successfully
  • Added support for nine non-English languages
  • Added the ability to delete a Backup Set using the keyboard
  • Added the ability to undo and redo configuration changes
  • Added the ability to sort Backup Sets by file count or total size
  • Added history information to main Configuration window
  • Added “Install updates automatically” checkbox to dialog which prompts user to upgrade
  • Added ability to manually check for an update
  • Added ability to back up network drives using the NFS protocol for Pro users

Bug Fixes

  • Fixed issues which caused the “Show status in menu bar” preference to not work properly
  • Fixed the link in the Readme file for downloading the software
  • Fixed a computer name display issue in the Setup Assistant
  • Fixed an issue causing the Configuration window to crash when browsing a folder with lots of files
  • Fixed an issue which caused the file exclusion warning to not show up properly
  • Fixed an issue which caused network connection errors
  • Fixed an issue which caused several duplicate warning dialogs to appear
  • Fixed an issue which prevented the use of certain non-Roman characters in a password
  • Fixed an issue which caused a file to be accidentally excluded
  • Fixed an issue which caused the Backup Set Editor to display the wrong file size
  • Fixed an issue which caused files to be re-uploaded unnecessarily
  • Fixed an issue which caused files in Trash to be backed up


One of the two major changes in this release is support for nine languages in addition to American English:

  1. German
  2. Greek
  3. British English
  4. Castillian Spanish
  5. French
  6. Italian
  7. Dutch
  8. Portuguese
  9. Slovenian

If you have chosen one of those languages in System Preferences, Mozy will use it automatically. No assembly required. If you find spots where the translation doesn’t make sense, please let us know.

File Scanning

The other major change — the one I’m most excited about — is the new file scanning engine. This is how Mozy finds all your files and decides which ones to back up.

In the past, we’ve depended on Spotlight, Apple’s file scanning feature in OS X, for about half of our scanning. Backup Sets that searched for files of a certain type used Spotlight. Backup Sets that matched a folder (and selections made in the Files & Folders tab) scanned the hard drive directly. We kept finding that Spotlight returned inconsistent results in some cases. So we decided to stop using it.

While we were making the change, we simplified how things work and made everything but the initial scan much, much faster. Mozy now uses far less memory, even when backing up millions of files. There are still some improvements we want to make, but the new file scanning engine makes Mozy feel rock solid.


If you’ve gotten this far, thanks for reading. Please feel free to drop me a note (dan at mozy dot com) with any comments or suggestions. Oh, and Mozy for Mac 1.6 has two new easter eggs. :-)

If you’re new to Mozy, you can try our 2GB-for-free, no-strings-attached version here.

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  1. ChiliPepr
    Dec 22 2009

    MozyHome works pretty well for me – on both Mac and PC. Their 2nd level support is good.

    Use the following link to get 20% more space on a free MozyHome 2 Gb account:

  2. Doug
    Dec 27 2009

    A real Mozy person?! I’ve been stuck with Mozy tech support India for the last six days, getting nowhere, and I’d like to get in touch with somebody who can actually help. Sorry to barge into your Christmas vacation, but I’ve got a continuous reproducible crash with your new scanning system, since my Mac Mozy install auto-updated on Dec. 21. The MozyHomeBackup executable is crashing with a EXCBADACCESS (SIGSEGV) [segmentation fault], while scanning. It scans for 15 seconds to 6.5 minutes, then restarts, over and over. I’ve repaired permissions, turned off Time Machine, re-installed the latest version, and restarted. Same problem, no change. There doesn’t seem to be any failure message; it just quits.

    For now, I’ve made the MozyHomeBackup file non-executable, so it isn’t chewing up my resources and my drives. But I’d really like to work with somebody who can shove a bunch of debug statements into the executable or figure out where it’s crashing. I can’t be the only one with this problem.

    (I don’t care if this comment is published; I just want to connect with a real Mozy programmer instead of going around in circles with tech support.)

  3. Dec 28 2009


    I’m sorry you are having trouble with the new version. I’m also sorry you aren’t being escalated properly. Can you send me some information?

    1. Option-click the Mozy menu bar icon
    2. Select the “Collect Log Files…” option
    3. Email the Zip file it creates to dan at mozy dot com

    I’ll see what the issue is and get back to you. If you want Mozy to stay off, you can run this command from the Terminal (and use “load” to turn in back on):

    sudo launchctl unload /Library/LaunchDaemons/com.mozy.backup.plist

    You can also contact Mozy staff on Twitter, Facebook, and GetSatisfaction.

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