When you buy new external drives for Pro Tools be aware of three things.
USB is not supported. Pro Tools won’t allow you to record or playback off USB drives. They can only be used as ‘transfer drives’.
Firewire drives should have Oxford chipsets. Most drives that have Oxford chipsets do advertise the fact. Most cheaper drives don’t, so be careful. Although firewire drives that don’t have Oxford chipsets will work with Pro Tools you can expect problems with both performance issues and even data loss so my advice is don’t go thee, it isn’t worth it.
When you get your new drive home re-format it. For all Mac users use Apple’s Disk Utility as all drives attached to Mac based Pro Tools rigs must be formatted ‘Mac OS Extended (Journalled)’. For more help see the free help guide on my web site.
New Macs
Also remember that the new Macs announced yesterday have only have one Firewire 800 port and no Firewire 400 ports. If you go for a new Mac you must buy a Firewire 800 to 400 adaptor cable if you are going to use any of Digidesign’s existing hardware, although remember that Digidesign have yet to announce support for the new Macs so you will be in unsupported territory until Digidesign get their hands on some of the new machines and put them through their exhausting test procedures, but don’t expect a quick answer. If you want to be safe then do a deal on an existing approved model.