initial sync of large libraries extremely slow
You need to seriously work on the performance when doing an initial sync of large libraries with many files. I have a photo library with approx. 250 GB worth of photos, and after trying to sync these libraries (<year>,<month>,<description>) for almost two weeks, I had to give up. Your sync engine is just not capable. Went back to DropBox, and no issues at all. Sure, it took some time to do, but no technical issues.
After researching quite a bit, I can see that I am not the only one with this problem. This is a serious show stopper.
Other than OneDrive works fine, but it is just not capable of uploading many libraries with a lot of photos (or files) in them in one go. I don't care if it takes a few days, but please make the sync engine reliable and informational.
After "OneDrive.exe /reset" for the 5th time, I gave up.
If Dropbox can do it, so can you.
Jerry Hall commented
I just switched from Dropbox and am losing my mind. I tested with 5gb and all went well. I added my main drive files (about 750gb) and it's hung on 5.36gb for two days. Not good.
I am giving this a little more time but, am seriously headed back to Dropbox if this persists another 48 hours. No patience for this at all. This is cloud storage 101.
Markus Schiefer commented
I just ran into this for the first time. It took several hours locally using only about 25% cpu to even start uploading files of my medium size library of about 600k files with about 6gb.
And even with reduced service performance due to the corona restrictions this process should have been finished 12 hours later, but I am looking at 20% progress.
This is extremely disappointing when comparing it to other cloud storage providers.
Josh Moore commented
2 years on and it is still terribly painful to do a first sync of a large file structure. The messages are frustrating e.g. "Downloading at 0.0 KB/s 1 file remaining" when it still actually needs to upload 140,000 files! And the continuous title, "One Drive is updating files". Apparently it indexes all the files before uploading - if so, it would be nice if it said that. And secondly, the upload speed is painful - much slower than my broadband speed. It would be nice to have a "High Priority" tick box, where we could tell it to sync with high priority instead of just being low impact in the background. Instead of using 2.5% of CPU it could use way more and we could set it to transfer files at high speed overnight, etc.
Dustin Adam commented
I'll +1 this. We are in the process of migrating several terabytes of content to SharePoint. It appears that OneDrive won't start sync'ing content until it's completed compiling a local .dat file that has some representation of the content in the document library. (%localappdata%\Microsoft\OneDrive\settings\Business1)
Hopefully Microsoft is working on reducing the time it takes for OneDrive to begin it's initial sync for large document libraries, even if, like Ivan below, all you want is a subfolder from the library
Ivan Palikuca commented
This is a issue for our environment too. We have department/area that has 1.2 TB and approximately 1.5 million files. There are about 20 people that have access to library but they are constantly changing. Problem is initial sync, talking to Microsoft support this is normal because even if I selected specific folder within library to sync, OneDrive has to go through entire library and all files before it starts syncing files I want... In my case it could take up to 4 hours for files to sync, while particular folder has only around 3.5 MB....
Dave Harris commented
Dropbox and Google Drive are much faster when "syncing" files to the cloud. OneDrive is pathetically slow and simply not ready for prime time.