SyncBackPro/SE/Free have no realistic maximum file sizes (they can create files larger than the biggest currently-available disk, by a huge margin) except as noted below
- SyncBackPro and the cloud: Microsoft Azure has a maximum file size of 200GB, and Amazon S3 has a maximum file size of 5TB.
- SyncBack and FTP: SyncBack has no size limits but your FTP server probably does. Check your FTP server software to see if it has any file size limits, or if the storage device it saves files to has any limits.
SyncBack and Zip: SyncBackPro/SE/Free use the Zip64
format so have no practical limits on the size of the Zip file or files
that go into the Zip file. However, where/how the resulting Zip is stored might have a size limit. Note that SyncBack V3 freeware (now discontinued) had a 2GB Zip size limit, but SyncBackFree V6 and later does not.
Note that the FAT and FAT32 file systems have a file size limit of 4GB. Using SyncBackSE/Pro you can avoid this limitation by performing a backup to a single Zip file that is split into separate 4GB files.This workaround is not available in SyncBackFree, as the freeware version does not support the single-Zip-splitting function.