In general, with your fast network, you are completely safe setting it to 30 threads and letting it run. But if you are in California you should be able to hit something like 150 Mbits/sec, maybe higher. The slow ping (high latency) will definitely affect the performance of the backups, and if you are as far away from the United States as New Zealand you might only be able to get a maximum of 30 Mbits/sec. Where are you physically? I thought "Sonic" was all in California? Which means you should be screaming fast. Also remember that files are backed up in "size order" so you won't see the maximum throughput possible on your connection until you reach the section of files that are 300 MBytes and larger (because those will use all 30 threads). So in the most recent 6.1 release we changed the cutoff for "large files" to be 100 MBytes so the MINIMUM number of parallel threads you use is at least 10 threads. The "flaw" in that was that if you were transmitting a 30 MByte file, it was broken into 3 "chunks" where each chunk was 10 MBytes and transmitted in parallel, but it could only use 3 threads for 30 MByte files, and 4 threads for 40 MByte files, and 5 threads for 50 MByte files and so on. The code to transmit "large files" focuses on one file at a time and waits until that file is finished before transmitting the next file. The code to backup small files allows full parallelization where 30 threads transmits 30 small files at the same time. One piece of information: Backblaze backs up files in size order, small files first. This is all to fix the problem described in the next paragraph: After installing, click "Backup Now" exactly ONCE to start it back up, then let it run for at least 24 more hours. We JUST released a new 6.1 client that is much faster for some situations. Just install it right over the top of what you have. Pause your backup and then do a "Check for Updates" (menu in the Windows system tray or Mac top menu flame icon) and get the latest Backblaze client. I'm only getting roughly 30 Mbit/s actual upload. Disclaimer: I work at Backblaze and wrote the code that uploads files.
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