Re: HDD long-term data storage with ensured integrity
Hello,
On Mon, Apr 08, 2024 at 11:28:04AM -0700, David Christensen wrote:
> So, an ext4 file system on an LVM logical volume?
>
> Why LVM? Are you implementing redundancy (RAID)? Is your data larger than
> a single disk (concatenation/ JBOD)? Something else?
For off-site long-term offline archiving, no, I am not using RAID.
No, it's not LVM+md, just plain LVM for flexibility.
Typically I use 16 TB hard drives, and I tend to use one LV per data
source, the LV name being the data source and the date of the copy.
Or sometimes I just copy a raw volume (ext4 or something else)
to a LV.
With smaller drives (4 TB) I tend to not use LVM, just plain ext4 on the
raw disk.
I almost never use partitionning.
However, I tend to use luks encryption (per ext4 filesystem) when the
drives are stored off-site. So it's either LVM -> LV -> LUKS -> ext4
or raw disk -> LUKS -> ext4.
You can find some of the scripts I use to automate this off-site
long-term archiving here:
https://git.alphanet.ch/gitweb/?p=various;a=tree;f=offsite-archival/LVM-LUKS
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