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The file is quite simply stored on a remote disk which you are able to access from each of your devices.

I don't think that's true.

I think the data is also stored in ~/Library/Mobile\ Documents/com~apple~CloudDocs.
 
All this discussion wouldn't take place if Martin29 haven't confused users stating that iCloud Drive doesn't store files locally on the device.

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True, but if you look around, you can get ~5GB for free. Not a lot, but perhaps enough for the daily syncing needs.
SpiderOak offers now 2 GB only for free ...
 
The files in iCloud Drive are hogging all my MacBook storage. I came back from holiday and uploaded 30GB of videos to iCloud Drive ready to edit with iMovie while I commute to work every day, but then all of a sudden every single video showed up on my MacBook, in Library>Mobile Documents>iMovie, taking up 30GB of my 126GB SSD.

I can access all the movies iCloud from iMovie in iOS without them sapping my storage, but my Mac insists on storing them locally as well. Trying to delete them from this folder within Library just tells me "this will delete the item from iCloud and all your devices".

This is a pretty big dilemma, considering I have another 50GB of files to migrate from Dropbox...
 
The files in iCloud Drive are hogging all my MacBook storage. I came back from holiday and uploaded 30GB of videos to iCloud Drive ready to edit with iMovie while I commute to work every day, but then all of a sudden every single video showed up on my MacBook, in Library>Mobile Documents>iMovie, taking up 30GB of my 126GB SSD.

I can access all the movies iCloud from iMovie in iOS without them sapping my storage, but my Mac insists on storing them locally as well. Trying to delete them from this folder within Library just tells me "this will delete the item from iCloud and all your devices".

This is a pretty big dilemma, considering I have another 50GB of files to migrate from Dropbox...

Apple should offer a way of managing synchronisation. The way it works now doesn't scale up well..
 
Apple should offer a way of managing synchronisation. The way it works now doesn't scale up well..

Yeah, this won't be very useful to me in its current state.

I wouldn't mind if one could specify a local cache size, dedicate - say - 100G to recent iCloud documents, and have it purge things I haven't accessed recently first. That'd keep it under control, and still allow me to throw a few hundred gig into the cloud without worry about local disk space.
 
Actually this is even worse than what we thought. I was so furious about it that I wrote to Tim Cook about it:
Hi Tim,

One of the big features this year on Yosemite is the iCloud Drive. Unfortunately it works very disappointing. I copied 7GB yesterday morning from my iMac to my iCloud Drive and on my MacBook Air I see 5,8GB only, 30 hours later. I had also deleted two folders from iCloud Drive and these folders do still appear on my MacBook Air. I am using the latest GM version of Yosemite, so I am pretty sure this is final code...
When will Apple learn to create a cloud service of Dropbox quality?
Another caveat with iCloud Drive is that there is no way to selectively sync folders locally, like on all other cloud storage solutions. This is extremely problematic on computers with not enough storage.
I was hoping to cancel my premium Dropbox account but I can't. iCloud Drive is a big disappointment.
This is real disappointing Tim. I hope you take this issue seriously and push the right buttons at Apple so that iCloud Drive gets a real Dropbox alternative. Currently it is really bad.
 
I am having the same problem. I uploaded about 64 GB of data to my iCloud drive and now my MacBooks HDD is full.
I actually can’t believe this.

This basically means that you can only use as much of your iCloud Drives storage allowance as your computer with the smallest drive will allow you to.

After iCloud Drive synced all of its data down to my MBP, I wasn’t even able to install google chrome anymore so it looks like it’s also not some kind of intelligent solution that will delete the cached data as needed.

How is this even possible. Obviously someone at Apple must have noticed but decided not to do anything about it.
 
I was looking forward to using iCloud drive for a lot of the things I use Dropbox for. After seeing that there is no selective synchronization, and anything stored in iCloud Drive is also stored on the Mac, I will restrict my usage of the feature.

There is no real incentive for a person trying to keep documents safe and save space on the Mac at the same time.

I don't think Apple thought this feature through all the way, given what I see thus far.
 
I was just thinking the same thing, as I am half way through an installation of Yosemite on a 64gb macbook air.

My main machine is a mac mini with plenty of space, but I want to be able to use iCloud drive without it downloading everything to the small air hard drive.. otherwise its going to get very full very quickly.

I see that there is an option to selectively sync apps (meaning you can forego the large iMovie files), but no other selections beyond that.
Hopefully they will add more functionality sooner rather than later.
 
If the files stored on iCloud Drive are also stored locally, then there is no point in buying remote disk space beyond the capacity of your smallest local hard drive..

So why do Apple not sell iCloud Disk space at 64.. 128.. 256.. 512 etc capacities? There is simply no logic to what we're seeing regarding iCloud storage as things stand.

Combine this with still not being able to add document attachments to mail in IOS and the whole thing starts to feel half baked..

I'm disappointed because I had hoped to be able to move all my Dropbox content to iCloud Drive.
 
If the files stored on iCloud Drive are also stored locally, then there is no point in buying remote disk space beyond the capacity of your smallest local hard drive..
There is, because the space can not only be used for iCloud Drive, but also for photos, device backups, mail etc.

But I agree that iCloud Drive needs a selective syncing option.
 
So are you saying that photos or image files (I assume the disk is not intelligent enough to know whether a file saved as a .jpg is a photo or a document image) are not duplicated on the local disk??

I have thousands of historic document images in various folders and which I had hoped to place on my iCloud Disk.. If I am obliged to store copies locally on ALL my device hard drives, then I could end up with four local copies plus a remote copy! That is ludicrous!

In addition I spend time in libraries, museums or record archives with my Macbook Air with a 256Gb local disk.. If all my files were to be stored on that disk, then the Air would be completely useless to me, it simply would no longer have the capacity. And my nice new 64Gb iPhone will drown under the load, meaning the grail of mobile access to all my data is not going to happen till a 1Tb iPhone is launched.
 
So are you saying that photos or image files (I assume the disk is not intelligent enough to know whether a file saved as a .jpg is a photo or a document image) are not duplicated on the local disk??
No. I was talking about the iCloud Photo Library, which by default only keeps small downscaled versions of the images on the devices, and keeps the full resolution originals in the cloud only.

If you drop an image file into iCloud Drive e.g. via Finder, it will of course be treated like any other file.
 
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