Frequently Asked Questions

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  • How do I exclude uncritical data from my backup?

    In order to use less storage for your backup, you can exclude uncritical data from your backup.

    Open your stoney backup client and click "backup". Deselect the folders which you want to exclude from your backup and click "save" to confirm these settings.

  • How much storage space do I need to backup my files?

    You have access at any time to 7 daily, 4 weekly and 3 monthly backups. So documents and other data which are older than a month and were changed since then are available in three versions. Therefore you need approximately three times as much storage as your data on your hard disk currently uses.

    For a backup size over X Gibibyte, your can calculate with factor 2.1. For example 30 Gibibyte Data need 63 Gibibyte backup space. 

  • Which operating systems are supported?

    • Windows
    • Mac OS X
    • Linux
    • BSDs
  • How do I create an ed25519 SSH public/private key pair?

    To create ed25519 SSH public/private key pair, you need OpenSSH 6.5 or newer.

    ssh-keygen -t ed25519 -C ""

    Die Ausgabe von ssh-keygen sieht in etwa wie folgt aus:

    Generating public/private ed25519 key pair.
    Enter file in which to save the key (/home/steppingstone/.ssh/id_ed25519):
    Enter passphrase (empty for no passphrase):
    Enter same passphrase again:
    Your identification has been saved in /home/steppingstone/.ssh/id_ed25519.
    Your public key has been saved in /home/steppingstone/.ssh/
    The key fingerprint is:
    The key's randomart image is:
    +--[ED25519 256]--+
    |+=Bo |
    |=*X=. . |
    |B%+o+ + |
    |O+*o = . |
    |o=o.. o S |
    |o . o |
    |.o . |
    |+ = . |
    |.E+= |
    RC=0 steppingstone@lale1202:~$ cat .ssh/
    ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAID5DuOj3fhVqQpeXTRa2Tf8OXm1OO9AmCKs312770odA

  • Which protocols are supported?

    • secure FTP (sftp) and secure copy (scp)
    • rsync via secure shell ssh
  • Can other users see my data?

    Of course not! Moreover, your data is encrypted while being transmitted over the Internet.

  • How many backups (iterations) do I have?

    You have constant access to 7 daily, 4 weekly and 3 monthly backups.

  • What is the difference between GB (Gigabyte) and GiB (Gibibyte)?

    The first one mentioned uses decimal (SI) and the second one binary (IEC) unit prefixes. The actual sizes are shown in the table beneath.

    SI unitMeaningIEC unitMeaning
    Kilobyte (KB)1 000 ByteKibibyte (KiB)1 024 Byte
    Megabyte 1 000 000 ByteMebibyte (MiB)1 048 576 Byte
    Gigabyte (GB)1 000 000 000 ByteGibibyte (GiB)1 073 741 824 Byte
    Terabyte (TB)1 000 000 000 000 ByteTebibyte (TiB)1 099 511 627 776 Byte
    Petabyte (PB)1 000 000 000 000 000 BytePebibyte (PiB)1 125 899 906 842 624 Byte
    Exabyte (EB)1 000 000 000 000 000 000 ByteExbibyte (EiB)1 152 921 504 606 846 976 Byte


    More information can be found on Wikipedia.



  • Is all of my data transfered each time?

    No, only the data changed will be transmitted: edited existing documents and well as new documents and settings.

  • How long does a backup process take?

    This depends on the amount of data you have, the number of changes from the previous day, and your upload bandwidth (dependent on your internet access).

  • How frequently should I run the backup process?

    Since your backups are made once per day, you should automatically trigger the process at least once within each 24 hours. If required, for example when you are away from the office with a notebook and have made many changes to your data, then several manual backups on the same day are recommended.

  • How are my backups structured?

    stoney backup offers you access to 7 day, 4 week and 3 month backups. You write your data into the "incoming" list while the backups are in the "snapshots" list and are subdivided as follows:


    last night


    the night before last


    the night 3 days ago


    the night 4 days ago


    the night 5 days ago


    the night 6 days ago


    last week (7 days ago)


    the night 2 weeks ago


    the night 3 weeks ago


    the night 4 weeks ago


    the night 5 weeks ago


    the night 2 months ago


    the night 3 months ago


    the night 4 months ago

  • Are my backups safe from accidental changes?

    Yes, you only have read access to your backup files. So neither you, nor somebody else can inadvertently change or delete the data.

Backup Client Download

Below you can find the proper version of stoney backup for your operating system: