Dump(8) does not do incremental

Lowell Gilbert freebsd-questions-local at be-well.ilk.org
Fri Apr 3 18:53:05 UTC 2015

Bigby James <bigby.james at dimthoughts.com> writes:

> On 04/03, Olivier Nicole wrote:
>> I understand one may want to not implement the incremental dumps, but the
>> default should enable them.
> There are several reasons full upgrades are the safer and saner default.

There are several reasons why one would want to have backups in
the first place, and no one approach will serve all of them. The
"Backup Basics" chapter of the FreeBSD Handbook covers a lot of
the tradeoffs.

One tradeoff that chapter doesn't touch on is data
confidentiality issues with backups. If your needs require
offsite and/or offline backups (and most do, at least in my
opinion), you may need encryption. Which can't be automated
(although it doesn't necessarily have to happen at the same time
the backup is made). This is why so many businesses use outside
services for offsite backup -- it lets them depend on physical
security instead of having to keep encryption keys secure.

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