# Lewis
Lewis is our server used for backups.
## Architecture
Backups are implemented in a pull fasion.
A single Borg backup repository is maintained on this server.
Servers in our network expose a SSHFS share with files they wish to be backed up.
Authentication of these SSHFS shares is done using SSH user certificates.
## TODO: off-site backups
Right now, all backup data is still stored on-site.
One potential place to store backups off-site is Amazon S3.
Another options would be HiDrive S3 from Strato.
## TODO: offline backups
Another improvement to our backup system is to incorporate offline backups.
I should investigate what is a good method to do this.
