Maintenance release: Server! v3.1.6.46

We have just released Server! v3.1.6.46 to work around the issues caused by CloudBerry Backup, as discussed in this post.

The SFTP protocol standard states “The server will respond to this request with a SSH_FXP_STATUS message. If a file or directory with the specified path already exists, an error will be returned.”; Yet, CloudBerry Backup tries to create the same directory twice and when Server! correctly sends an error back the second time (because the directory already exists) CloudBerry Backup ( considers the backup job failed.

This new version of Server! tries to identify CloudBerry Backup, and sends a “success” reply upon double directory creation requests, but will practically ignore the second request if the first one was successful.

We have already contacted CloudBerry Lab, and we will remove this workaround from our software as soon as they release an update that fixes their protocol violation issue.

For now, if you need to use Server! together with CloudBerry Backup, you are advised to download the latest version of our server from our web site.

CloudBerry Backup and Server! Free (SFTP)

Some users reported the inability to perform backups from CloudBerry Backup to Server! Free Edition.

Therefore we have analyzed the situation, and this is what we have discovered:

  • By default CloudBerry Backup tries to use 5 (five) concurrent connections to your SFTP server
  • The free edition of Server! is limited to 3 (three) concurrent connections, and drops/cuts the 2 connections that exceed such limit

Since the number of concurrent connection cannot be changed in Server! Free (hey, after all, it’s a forever-free product for personal use only) then our recommendation is to set CloudBerry to perform 3 concurrent connections instead of 5. Continue reading