New answers tagged unix-shell
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sudo dd if=/dev/sda1 bs=32M | 7z a -si /data/$(date +%Y%m%d_%H%M%S)_sda1-backup.tar.7z
7z utilizes all CPU cores. Also, adding bs=32M or with some other non-default values may significantly speed up the process.
Test results:
root@pentagon:~# dd if=/dev/sda1 | bzip2 -c > /data/$(date +%Y%m%d_%H%M%S)_pentagon-backup-sda1.bz2
12288000+0 records in
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