While the
PureDisk 6.6 Compatibility document , dated September 2009, doesn't currently state Mac OS X 10.5 or Mac OS X 10.6 support, I highly recommend that you submit an enhancement request here on Symantec Connect.
Click on "Ideas" above and click the "
submit a new Idea" button under the
Backup & Archiving section with your request for PureDisk support of Mac OS X 10.5 and Mac OS X 10.6.
The sooner you do this, the sooner other customers can weigh in on this request and add their vote.