Downloading Disk ARchive 2.7.1 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The application lies within Developer Tools, more precisely Webmaster Tools. The actual developer of this free Mac application is Denis Corbin.
From the developer:
Disk ARchive is a shell command that backs up from a single file to a whole filesystem, taking care of hard links, Extended Attributes, sparse files, MacOS's file forks, any inode type (including Solaris Door inodes), etc. It relies on the libdar library and its Application Interface (API), which is the core part of DAR programs. As such, this library is released under the GPL along with DAR.
You may want to check out more software for Mac, such as Disk Doctors Photo Recovery, Disk Toolkit or Archive Cleaner, which might be related to Disk ARchive.
Archivers