Today Microsoft announced that OneDrive for Business customers will soon have unlimited storage (previous limit was 1TB).

Many people have pointed out that the 20,000 file limit seems to nullify the “unlimited” storage feature.

http://support.microsoft.com/kb/2933738

Due to the current single item limit of 2GB per file, the effective limitation of OneDrive is now 40TB (20,000 * 2GB = 40TB).

Since local laptop hard drives are moving towards low capacity SSDs, I am comfortable with a 40 TB cap being the same as  “virtually unlimited.’

Microsoft increased the consumer version of OneDrive single item limit from 2GB to 10GB. We hope that the business version will eventually support 10GB files too, but we do not have a date on when or if that will happen yet.  https://blog.onedrive.com/onedrive-now-supports-10-gb-files/