Re:ZFS: Use mirror vdevs, not RAIDZ
by AnIdiotOnTheNet on Wednesday December 09, 2020 @04:19PM
(#25365194)
> Its about 3/4 of a TB a week.
That's best case. Anyone who's done large transfers over the internet knows reality will be much worse.
Re:ZFS: Use mirror vdevs, not RAIDZ
by justinclift on Thursday December 10, 2020 @01:23AM
(#25370461)
Bearing in mind that it's likely not practical to use 100% of available upload bandwidth for extremely long periods of time. Generally speaking anyway. :)
Its also just the first backup which takes a (long) while. If you got only 10 mbit upload, then you're able to upload 600 mbit per minute, or 36000 mbit per hour. Which is about 4500 mB/hour (or ~4,4 GB/hour). Which results in 108000 mB/day (or ~105 GB/day). Its about 3/4 of a TB a week.
I'm glad I got 30+ mbit upload with my VDSL2. My first backups took ages (I got 5 TB with Jottacloud). First I thought it was Duplicati being slow with regards to cryptography or being .NET, but nope that ain't it.
Incremental backups during night are not going to hamper the connection though.