Developer Version of Leopard?

Discussion in 'macOS' started by ReliableRumors, Aug 7, 2006.

  1. ReliableRumors macrumors newbie

    Jun 7, 2004
    Hey everyone. .very excited about the new Mac Pro - but does anyone know if WWDC '06 attendees received a pre-realease copy of Leopard?? Let's hope so!! ;)
  2. Pipian macrumors regular

    Apr 22, 2003
    They did- but what are the System Requirements?
  3. clevin macrumors G3


    Aug 6, 2006
    i doubt it will be much different than tiger in sys req, since there is nothing new in core.
    well, one thing for sure, if time machine gonna do its work like that, u will need a BIIIIG hard drive.
  4. projectle macrumors 6502a

    Oct 11, 2005
    Not really, it is not that different than Sun's ZFS (assuming that it is't ZFS), where it utilizes Subversion (an enhanced version of CVS) to keep track of how data changes over time.

    For example, if you add one paragraph to a word document, when you save, it performs a compare on the copy in memory and on the hard disk, figures out the data that changes and then save the changes to a new pseudo-file that is accessed through the linker table (what you would think of as a file, where it tells the OS which sectors of the hard disk has the data that needs to be put back together.

    In fact, OpenOffice under Solaris 10 demonstrated that as a workstation, ZFS made data storate more efficient as contents of files that do not change (like file headers, images imbedded in documents, etc) do not need to be added to files. In turn, you would have one header and footer for a Word Document on your computer that is accessed with every single Word document that is saved, so all it deals with is plain text (making a 50KB file ~4KB of actual new hard disk space used). That test was the Solaris Manual in a Word Document (*.doc) created and saved on that machine in OpenOffice.
  5. lindmar macrumors 6502

    Oct 31, 2003
  6. clevin macrumors G3


    Aug 6, 2006
    what if u download and then delete a 1.3 GB movie, or 100 pictures?
  7. projectle macrumors 6502a

    Oct 11, 2005
    Well, that is the snag.

    Under ZFS, you would specify file types as far as how long they are kept, or how long something is kept if it is not touched.

    So, in Solaris you would say that for *.mov files, after they are deleted, store for 2 weeks prior to removing completely.

    Or, any file that is not edited in 6 months, delete all previous versions greater than 12 months old.

    True, there will always be the exception like downloading/backing up movies where you do not need the original data any more. However, I seriously think that Apple will end up including a way to "Delete Perminantly", as they do with the secure erase now.

    It would not really be that difficult to add a CTLR-Click option that states "Delete Forever", or specify certain folders as "Never Include in TimeMachine"
  8. balamw Moderator


    Staff Member

    Aug 16, 2005
    New England
    SVN based would be nice and make sense. Both Time Machine and Vista's Previous Versions support however bring back not-so-pleasant memories of VMS for me, which kept as many versions of files as you wanted, appending a semicolon and version number after each file name...

    We'll see more about how useful/well implemented the features turn out to be (or the opposite) when the two OSes see the light of day next year.


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