hard drive - How to best backup a server HDD to a secondary HDD - Ask Ubuntu


i have server configuration:

os: ubuntu server 16.04 hdd1: 1tb <system> hdd2: 1tb <empty>

i backup on hdd1 onto hdd2.
ideally mirror image of first drive , things either manually or on schedule.
backup purposes not raid.

i'm considering using rsync backup / directory.
i'm unsure if that's idea.

what optimal way of backing drive this?

rsync job. has advantage of being able boot backup drive , restore files simple copy. conventional tools tar , dump have advantage of being able compress data can fit more incremental backups , go further in time restore modified or deleted file.


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