DigiDrive Storage Manager is a utility for tuning and testing your DigiDrive SCSI drives. This utility replaces the DigiDrive-Tuner utility you received with your DigiDrive, and provides a suite of useful diagnostics. It is only compatible with Macintosh OS X and Windows XP, and will only work with Avid and DigiDrive brand SCSI drives. It will not tune FireWire or IDE/ATA drives.If you used DigiDriveTuner to tune your DigiDrives when you initially installed them, there is no need to tune them again for OS X. You may want to install DigiDrive Storage Manager for testing purposes, but it is not required. If you have purchased a DigiDrive SCSI drive and have not run DigiDriveTuner, you should install DigiDrive Storage Manager, launch it, and click the Tune button. There is no need to select individual drives, existing data on your drives will not be affected, and the process only takes a few seconds. Tuning your drives will ensure that you get maximum performance for Pro Tools.