
A quick post today on a personal new backup speed record: I do have a lot of data on my notebook and thus use a 2 TB SSD, which is currently about 50% full. Also, I do like to have an emergency spare drive at hand so I can quickly get operational again should anything happen with my notebook or the drive. That means that I have a 1:1 copy of my installation at hand that I keep up-to-date by rsync’ing deltas in regular intervals. This process is usually quite fast as the deltas are relatively small. Creating a new spare SSD, however, requires copying 1 TB of existing data to the new drive, which previously took many hours. But I’ve refined my hardware and technique over time. So this time around, I got 1 TB of data to a new spare SSD in around 35 minutes. The sustained transfer speed was 490 MB/s, or 28 GB per minute between the two LUKS encrypted partitions!
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