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Stefan-Code/disk-snapshot.md

Last active September 21, 2016 16:28
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Hard Drive snapshot command
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disk-snapshot.md

The following command creates a complete compressed disk snapshot of /dev/sda. Replace 500107862016 with the size of the media to be backed up so pv shows progress information. Runs at a speed of about 30MB/s for me. When using pigz instead of gzip for compression I can achieve speeds of around ~150MB/s (using SSDs).

dd if=/dev/sda conv=sync,noerror bs=64M | pv -s 500107862016 -pera | pigz -c > /media/user/backup.gz

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