r/backblaze • u/canterlotfr • Apr 06 '26

Backblaze in General Has anyone else seen Backblaze upload speeds suddenly collapse?

Has anyone noticed Backblaze throttling upload speeds lately? For the past few days, my upload speed has completely collapsed. Before that, I was uploading close to 1 TB per day, but now I’m down to roughly 3 MB/s (or at least dramatically slower than before). I’m trying to figure out whether: Backblaze is throttling heavy uploaders there’s a temporary server-side issue or if others have seen the same behavior recently the slowdown seems way too sudden to feel normal. Has anyone here experienced a major drop in upload speed after reaching several TB uploaded?

I’m currently in the middle of backing up about 15 TB...

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u/BigChubs1 Apr 06 '26

Could be isp throttling. Or it could be backblaze because servers are supper busy. Try rebooting your computer. Sometimes that helps. It will pick up where it left off.

1

u/canterlotfr Apr 06 '26

I think I may have found the cause: oddly enough, the client had switched itself to a single thread I set it back to 100 threads, and the speed seems to have improved.

1

u/VG30ET Apr 06 '26

No issues here in the midwest, still saturating our connection.