Need some help with backing up external hard drive using Time Machine

Hi all, I'm trying to work out the best way to back up multiple iPhoto libraries using Time Machine.
At the moment I have got an iMac and Macbook Pro, both of which have an iPhoto library (with different content).  Currently these are not backed up at all.  So what I want to do is back both up to an NAS drive, which I know is straightforward.
What I also want to do is create one iPhoto library on an external hard drive that I can use with my MBP, and then delete the iPhoto library on my MBP to free up some hard drive space (it's running slower and slower and I'm hoping that this might help it run quicker). 
So, as I want to have the library on two seperate drives in case one fails, what I want to know is whether I could use Time Machine to back up my external hard drive as well as the internal drive of my MBP?  Also, would I need to have the external drive connected at all times for Time Machine to "see" it?
I hope that makes sense, all I seem to be doing currently is going round and round and can't work out whether what I want to do is possible or not.
Thanks in advance

If I understand your goal correctly, you're considering using Time Machine as external storage, and it doesn't work that way.  Time Machine keeps around what it can, and older stuff gets flushed as the storage available to Time Machine reaches its lower threshold due to the addition of newer stuff.  When the older stuff gets flushed is not predictable.
It is possible to have several Time Machine backups aimed at the same target (this can be done with Apple Time Capsule, for instance), though you might want to partition the disks to ensure that the intended amount of storage is available.  Different NAS drives have different features here.
NAS is only as fast as your network connection, and that's almost always much slower than the in-box I/O connections; a local disk will be far faster than a NAS disk, just because of the bottleneck that is wired gigabit Ethernet, and most WiFi is slower and sometimes far slower than wired gigabit Ethernet.  FWIW.
If your MacBook Pro is old enough and you have $$ but aren't in a position to spend $$$$$ on a newer model, then consider an in-place drive upgrade.
If your network connection is fast enough to transfer the amount of data you're dealing with in a reasonable time, there are also hosted storage options.
You can use a NAS drive as storage independent of Time Machine, and relocate stuff there.  (You'll still want to have backups of that data, as NAS drives — even NAS with RAID — can still lose files, become corrupted or otherwise ruin your data day.
As for your performance, keeping about 10% or so free on the disks is the local preference, but it's worth reviewing the performance of the whole system — Performance Monitor, Console.app, etc — to see if there's something else going on, or if your system load and personal performance expectations are exceeding what your MacBook Pro can provide.

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    My guess would be it has created an entirely new backup of your drive when you upgraded to Mavericks.
    See Here: http://pondini.org/TM/1.html
    And here: http://pondini.org/TM/9.html
    Peruse the whole site. There is a lot of information there.

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    Try Pondini's articles;
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    Also http://pondini.org/TM/15A.html to clarify how to use the timeline.

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    As john noted, eventually that external is probably not going to be big enough, but it certainly is for now. The HD just needs enough capacity to cover the amount of data on your internal HD, not the internal HD's total capacity.
    Format/partition the external as follows and you should be set to go:
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    2. Open Disk Utility on the MBP.
    3. Select the external HD in the left pane.
    4. Click on the Erase tab.
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    Not tech savvy at all and barely understand basics. I need very simple and easy to understand explanations.

    sydababy wrote:
    and then deleting them off of my computer.
    BIG BIG MISTAKE ..... youre making a linchpin deathtrap for your data trying to shove everything on a single fragile HD.
    Dont suffer the tragedy other people make, buy another or 2 more HD, theyre cheap as dust.
    The number of people who have experienced terror by having a single external HD backup is enormous.  One failure that WILL HAPPEN, and kaput,......all gone!
    Dont do it, its all about redundancy, redundancy, redundancy.
    follow here:
    Methodology to protect your data. Backups vs. Archives. Long-term data protection
    Deleting them off your computer is fine....having only ONE copy is extremely BAD.
    The Tragedy that will be, the tragedy that never should be
    Always presume correctly that your data is priceless and takes a very long time to create and often is irreplaceable. Always presume accurately that hard drives are extremely cheap, and you have no excuse not to have multiple redundant copies of your data copied on hard drives and squirreled away several places, lockboxes, safes, fireboxes, offsite and otherwise.
    Hard drives aren't prone to failure…hard drives are guaranteed to fail (the very same is true of SSD). Hard drives dont die when aged, hard drives die at any age, and peak in death when young and slowly increase in risk as they age.
    Never practice at any time for any reason the false premise and unreal sense of security in thinking your data is safe on any single external hard drive. This is never the case and has proven to be the single most common horrible tragedy of data loss that exists.
    Many 100s of millions of hours of lost work and data are lost each year due to this single common false security. This is an unnatural disaster that can avoid by making all data redundant and then redundant again. If you let a $60 additional redundant hard drive and 3 hours of copying stand between you and years of work, then you've made a fundamental mistake countless 1000s of people each year have come to regret.

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    I am backing up my computer to an external hard drive using Time Machine.  It has been at 288.91 "used" for a while... should I just let it ride?  It's been going for about 7 hours now

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    Fixing the problem.. hmm pondini is the expert.. you should be able to delete the backup of the photos in existing backup.. there are instructions to do it.. but it is a very poor way to do things.
    Much better. .archive off the existing backup.. this is long and slow but worth it. you need a usb drive of the same size as the TC drive. Then erase the TC and start a fresh set of backups.
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    http://pondini.org/TM/12.html

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    Searches for this information on Google yielded "iffy" results.  I'm hoping someone here is able to offer some clear steps to follow.  Perhaps I'm missing something silly.  Thank you very much!

    I came across this discussion after encountering the same problem. Since my internal HD was cose to full I added an additional external HD to my setup. I moved my iPhoto files to an external HD and backed both this external HD and my internal HD up with Time Machine to another external HD. So far the theory. When I wanted to test if this setup worked I noticed that I could only see my iPhoto libraries on the external HD in Time Machine when the external HD was connected to my computer, but not if I turned it off. This led me to search for a solution on the Apple Support Communities discussion board.
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    Try Pondini's articles;
    http://pondini.org/TM/15.html - scroll down to the pink box for iPhoto restoation.
    Also http://pondini.org/TM/15A.html to clarify how to use the timeline.

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    Will someone please explain how I can set up MyBook to wirelessly back up the two portable drives using Time Machine?
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    If you mean you're getting the same message:
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  • HELP - problems setting up External Hard Drive to Time machine

    Hi
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    Time Machine has been working fine with my internal drive - well I haven't needed to restore anything with it, so I don't really know.
    However, I have tried to add the 250GB drive to Time Machine, and in Preferences->Options, the 250GB drive is greyed out in the 'Do no back up' list. And the - (minus) box is also greyed out so nothing happens when clicking on it.
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    To move any device out of the Exclude list simply select it then click on the [-] button to remove it from the list.
    To prepare a new drive as the backup drive you must partition the drive GUID or APM depending upon whether your computer is Intel or PPC, respectively, and the formatted Mac OS Extended (Journaled.) See the following:
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    1. Open Disk Utility in your Utilities folder. If you need to reformat your startup volume, then you must boot from your OS X Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger or Leopard.)
    2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
    3. Set the number of partitions from the dropdown menu (use 1 partition unless you wish to make more.) Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID (only required for Intel Macs) then click on the OK button. Click on the Partition button and wait until the volume(s) mount on the Desktop.
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    5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
    6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
    Steps 4-6 are optional but should be used on a drive that has never been formatted before, if the format type is not Mac OS Extended, if the partition scheme has been changed, or if a different operating system (not OS X) has been installed on the drive.

  • Need to format "free space" of external hard drive for Time Machine

    I just recently purchased a MacBook Air and want to set up Time Machine with my external hard drive. I'm migrating from Windows 7 so before purchasing my new Mac, I transferred about 100 GB of data from my PC to my external hard drive that I wanted to keep. The external hard drive has a partition of 100 GB (91 GB used) and 365 GB of "free space". I would like to know how to format that free space so that I can use it with Time Machine but at the same time not lose any of my data on the first partition. I've looked around in the Disk Utility but it doesn't give any options to format the free space.
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    You should be able to repartition it, but that requires that the HD was formatted with Mac OS X Extended and journaling turned on. All I can suggest is you get another HD or move the 100 GB of stuff to the MBA, erase, reformat, and partition into two pieces, copy the 100 GB stuff back to the HD, and then it's set for TM.

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