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DAR has inconvenient restoration procedure: each incremental backup physically overrides files from previous step. So, if your file changes 7 times, it would be extracted 7 times, and 6 copies would be wasted, overridden by the 7th.

ayvango
– ayvango

2017-05-20 04:28:08 +00:00
Commented May 20, 2017 at 4:28
I would not recommend DAR, since DAR uses a nonstandard archive format. Also, are there a sufficient number of successful incremental restores to verify usability? Note that GNU tar advertizes to support incremental backups since 1992, but still fails to restore non-trivial deltas.

schily
– schily

2020-05-12 08:02:20 +00:00
Commented May 12, 2020 at 8:02
@schily Using a committee-standardized format isn't the only relevant criterion for judging the quality of a backup program. DAR's format is openly specified. I don't understand what you want to get at with your question. Such a number would be hard to quantify for any backup program. I don't see how GNU tar is relevant here. For example, star advertises compression support but last time I checked it failed reporting errors when compression was enabled during archive creation.

maxschlepzig
– maxschlepzig

2022-07-10 18:07:37 +00:00
Commented Jul 10, 2022 at 18:07
1

Restic also has deduplication built in, so no need for hardlinks, if the data is the same, it will only be copied up once.

gabe.
– gabe.

2023-06-06 19:21:48 +00:00
Commented Jun 6, 2023 at 19:21

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