This is what nathan from support told me when i contacted them: "As part of our backup process, Backblaze will run a checksum against each file before uploadin

This is what nathan from support told me when i contacted them: "As part of our backup process, Backblaze will run a checksum against each file before uploading it. This requires the entire bzfileids.dat file to be loaded into RAM. After a long time, or if you have an extraordinarily large number of files, the bzfileids.dat file can grow large causing the Backblaze directory to appear bloated, and use more RAM (potentially slowing down your system). In your case your bzfileids are extremely large, likely because you have a lot of files and an older backup." here's my backblaze folder: http://imgur.com/ohqUERr http://imgur.com/ohqUERr (i have my temporary data drive set to a secondary drive)