# How many mbps up do I need to synch files and run Back Blaze smoothly? **URL:** \ **Category:** Networking, WiFi, Cellular\ **Tags:** question\ **Created:** [October 31, 2025, 10:29pm UTC](https://www.twit.community/t/how-many-mbps-up-do-i-need-to-synch-files-and-run-back-blaze-smoothly/19255 "2025-10-31T22:29:44Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![jeremy](https://avatars.discourse-cdn.com/v4/letter/j/82dd89/32.png) [@jeremy](https://www.twit.community/u/jeremy)\ **Post date:** [October 31, 2025, 10:29pm UTC](https://www.twit.community/t/how-many-mbps-up-do-i-need-to-synch-files-and-run-back-blaze-smoothly/19255/1 "2025-10-31T22:29:44Z")
Two ISP service my town. Company A Cable 350 down and 20 up 64.95 per month Company B Fibre 300 down and 150 up 75.00 per month As I figure it, the largest packets that I have going ‘up’ are when I sink personal files with Google and work files with OneDrive. And my Back Blaze backup running continuously. Can I get away with 20 up? ---
**Author:** ![miquelfire](https://sea2.discourse-cdn.com/flex020/user_avatar/www.twit.community/miquelfire/32/4669_2.png) [@miquelfire](https://www.twit.community/u/miquelfire)\ **Post date:** [November 1, 2025, 3:29am UTC](https://www.twit.community/t/how-many-mbps-up-do-i-need-to-synch-files-and-run-back-blaze-smoothly/19255/2 "2025-11-01T03:29:48Z")
Like you said, it’s only when it’s uploading that it will be an issue. ---
**Author:** ![PHolder](https://sea2.discourse-cdn.com/flex020/user_avatar/www.twit.community/pholder/32/2439_2.png) [@PHolder](https://www.twit.community/u/PHolder)\ **Post date:** [November 1, 2025, 5:21pm UTC](https://www.twit.community/t/how-many-mbps-up-do-i-need-to-synch-files-and-run-back-blaze-smoothly/19255/3 "2025-11-01T17:21:24Z")
I have a version of “Company A” and I notice that some uploads I have to wait to complete are a little longer, but it’s rare that I personally am uploading much, and the download speeds are more than sufficient that I never consider “Company B” seriously, despite their theoretically better fibre speeds. My numbers, reported by [https://speed.cloudflare.com/](https://speed.cloudflare.com/) Download: 261 Mbps Upload: 14.1 Mbps Latency: 12.9ms Jitter: 4.96ms Packet Loss: 0.5% ---
**Author:** ![big\_D](https://sea2.discourse-cdn.com/flex020/user_avatar/www.twit.community/big_d/32/1023_2.png) [@big\_D](https://www.twit.community/u/big_D)\ **Post date:** [November 1, 2025, 5:45pm UTC](https://www.twit.community/t/how-many-mbps-up-do-i-need-to-synch-files-and-run-back-blaze-smoothly/19255/4 "2025-11-01T17:45:56Z")
I’ve used Carbonite and Backblaze for about a decade. I used to have a 2mbps up and later 20mbps. They share the bandwidth and throttles themselves, when other things are using the connection. The upload speed is only a limit for the first backup, on my first PC, it took a couple of weeks to complete, with the PC running 24/7, after that the synching of changes didn’t really take much time, the big changes were when I took a lot of photos out videos. I currently have a 500/200 connection, but that was only a benefit when I upgraded my Mac mini to a MacBook Pro. In daily use, as long as you have a couple of mbps, you won’t notice it running in the background.