Promise For Mac

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The Pegasus R4i, built for Mac Pro (2019), is a plug-and-play RAID MPX module with four 8TB swappable 7200rpm SATA HDDs, providing 32TB of raw storage. The Pegasus R4i comes preformatted in HW RAID 5. macOS Catalina includes built-in support, too, so you can get started using the volume immediately after installation.

Promise for mac pro

Install the Pegasus R4i module in slots 1-2 of Mac Pro

The Pegasus R4i is a RAID module for the MPX Expansion slot, used within the Mac Pro.It contains four swappable modules that contain four 7200 RPM hard drives from Promise, pre-formatted. While Microsoft doesn't have a desktop version of Visio for macOS, you can still work on Visio files on a Mac in your web browser. Visio for the web lets you view, create, and edit diagrams in the Safari or Chrome browser on your Mac. Co-designed with Apple, Promise introduced both the R4i and J2i devices specific for the Mac Pro.The former is a full-height MPX module while the latter connects over SATA.

Promise Machimana

For best performance, Apple recommends that you install the Pegasus R4i module in slots 1-2 of your Mac Pro. You might have to move an existing MPX module from slots 1-2 to slots 3-4 in your Mac Pro. You can also find installation instructions in the quick start guide in the Pegasus R4i package and on the Promise website.

Promise For MacMac

Restart Mac Pro and install the Pegasus Utility Software

Once you've installed the module and restarted your Mac Pro, the Pegasus R4i appears as a volume. When Mac Pro first recognizes the module, you’ll hear a series of tones from the module itself. And you’ll hear another set of tones when you log in and the volume mounts successfully. To manage the Pegasus R4i, install the Pegasus Utility software. The installer is located on the Pegasus volume. For help using the Pegasus Utility to manage your RAID volume, visit the Promise website.

Turn off Power Nap

As a final step, turn off Power Nap on your Mac Pro: in the Finder, choose System Preferences > Energy Saver, then deselect Enable Power Nap.

Promise For Mac Mojave


Promise Match

Before shipping, always remove the Pegasus R4i Storage Module from your Mac Pro to avoid damaging your computer.