Skip to main content

2 posts tagged with "backup"

View All Tags

· One min read
Hreniuc Cristian-Alexandru

I was thinking on how can you archive your data and store it without loosing it. Maybe first option that you are thinking is HDD or SSD, but those do not last very long(3-5 years).

So I tried to find an alternative, to store my backups and I found out about M-DISC.

They say that it can store data for 1000 years. I also found some durability tests for this technology:

A summary of those:

  • write the data to the disc
  • Put the disc in water and keep it there for a few hours
  • Freeze it for 24/48 hours
  • Leave it outside for 24 hours in the sun/wind
  • Scratch it
  • Try to read from it -> Success

You will need optical disks that use M-DISC technology and also an optical writer that supports M-DISC technology.

· One min read
Hreniuc Cristian-Alexandru

I usually have a data folder in my home folder, where I keep all my data, including the cache of my browser.

When I switch PCs I have to copy that folder on my new pc, if I try to archive the folder it will create a corupted compressed archive or the compression will fail.

So, to fix this I had to follow the following steps:

# Create a copy of the folder with rsync
# Will copy all folders/files from `data` inside the `data_backup` folder
sudo rsync -a --info=progress2 /home/chreniuc/data/ /home/chreniuc/data_backup/

# Create an archive
tar -cf - data_backup | lz4 -c > data_backup_29.04.2022.tar.lz4

# Copy the archive where you want

cp data_backup_29.04.2022.tar.lz4 destination

# To uncompress a lz4
lz4 -dc --no-sparse data_backup_29.04.2022.tar.lz4 | tar xf -