iCloud Photo Library capacity vs. iPhone capacity?

Discussion in 'Mac Basics and Help' started by m021478, Aug 10, 2015.

  1. m021478 macrumors 6502

    Nov 23, 2007
    What happens if I add 175GB of photos & videos to my iCloud Photo Library via the Photos for Mac app on my iMac, but my iPhone only has 32GB of total space?

    I've enabled "Optimize iPhone Storage" on my phone, but let's assume that I've got about 20GB of other stuff (apps, music, movies, documents and data, other) on my iPhone, leaving me only a couple GB to spare for all of the photos?

    Will it be smart enough to limit overall cache size and more or less force me to load images on-demand by pulling them from iCloud when I need to view one full-size?

    Please advise. Thanks!
  2. ApfelKuchen macrumors 68030

    Aug 28, 2012
    Between the coasts
    "Optimize iPhone Storage" is "dynamic" - it allocates space based on the amount of space available and needed for other purposes. So yes, it's smart enough to limit overall cache size. Most likely, your iPhone will have just small thumbnails of those photos uploaded from Mac until you actually click a thumbnail to view it, at which point the optimized resolution image(s) would be downloaded to the iPhone. Photos will automatically delete the least-viewed optimized resolution images later on (leaving only thumbnails) should space be needed.

    FWIW, I have 31.1 GB in my iCloud Photo Library. iPhone Settings > General > Usage > Storage > Manage Storage > Photos & Camera > Photo Library shows 7.7 GB - and that's despite the fact that I have 28.4 GB of Available storage on my iPhone.

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