For our tests and review, we left the drive in RAID 0 configuration. You can setup the drive for RAID 1, 5, 6, and 50, which can give you data redundancy, at the expense of some drive capacity. The Pegasus R4 has four 1TB drives in it, giving you a 4TB RAID 0 configuration. Since 1982, PCMag has tested and rated thousands of products to help you make better buying decisions. ( Read our editorial mission (Opens in a new window) & see how we test everything we review (Opens in a new window).) The drive's internal power supply means that you won't have to find space for an external power brick, which saves a little space and makes it more convenient to move the drive to another Mac or PC. In the back the drive has a pair of 10Gbps Thunderbolt ports, a Kensington lock port, cooling fan exhaust, and a standard 3-pin power port. It's a big metal box with four removable drive sleds in the front, with power and access lights, and a perforated panel for cooling duties. It's got an identical if shorter facade like its big brother, the Promise Pegasus R6 ($1,999).

The Pegasus R4 ( at Amazon) (Opens in a new window) looks like a standard business-class RAID drive from the front. It's a drive for the media, database, and scientific professional who needs to work on multi-TB projects, and who need to constantly submit their work now. It is one of the latest Thunderbolt drives on the market for Mac and PC users who have adopted the speedy 10Gbps interface. The Promise Pegasus R4 is a four-bay RAID external drive for professionals that sling a lot of data. How to Set Up Two-Factor Authentication.How to Record the Screen on Your Windows PC or Mac.How to Convert YouTube Videos to MP3 Files.How to Save Money on Your Cell Phone Bill.How to Free Up Space on Your iPhone or iPad.How to Block Robotexts and Spam Messages.

Promise technology pegasus2 r6