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Developed by Promise for Apple
Fine-tuned for Mac Pro & macOS Catalina
Legendary PROMISE Engineering, Quality & Support

Internal Storage Options for Mac Pro – PROMISE Pegasus R4i RAID Storage MPX Module and Pegasus J2i to conveniently store and speedily access upto 32TB of data over internal buses. Available now at the Apple.com and will be available soon through the Promise global network of distributors and value-added resellers. *Additional Capacities Coming Soon.

White paper

Pegasus R4i

RAID Storage MPX Module for Mac Pro
  • Elegant and rugged chassis designed uniquely to fit into Mac Pro’s MPX slots
  • Plug & Play with built in driver in macOS
  • Four swappable modules with 8TB 7200rpm SATA HDDs pre-formatted and pre-installed
  • Best-in-class Pegasus hardware RAID an optimal combination of capacity, redundancy and performance with up to 680 MB/s in RAID5
  • Promise Pegasus Utility for simple-to-use but powerful storage management and monitoring
  • Compatible with Apple macOS Big Sur and the new M1 chip powered Mac

Pegasus J2i

Internal Storage Enclosure for Mac Pro
  • Custom 2 Bay enclosure and cable assembly
  • One 8TB 7200rpm SATA HDD pre-installed, pre-formatted
  • Bay and kit for optional additional 3.5” SATA HDD (to be installed by end-user)

Specifications

Model
Pegasus R4i
Pegasus J2i
 
Capacity
32TB raw
8TB raw (as shipped)
Form Factor
Full height MPX Module for Mac Pro
2-Bay Internal Storage Enclosure for Mac Pro
Interface
MPX connector for Mac Pro
SATA3 with custom power and data cable to Mac Pro
Storage Devices
Four SATA3 7200 rpm 8TB HDDs, preformatted HFS+
One SATA 7200 rpm 8TB HDD, preformatted HFS+
Add your own 3.5” SATA HDD
RAID
Preconfigured RAID5
Supports RAID levels 0, 1, 5, 6, 10, JBOD
N/A
Dimensions
337 x 164 x 80 mm (13.3 x 6.5 x 3.2 inch)
155 x 121 x 99 mm ( 6 x 4.8 x 3.9 inch)
Weight
4.2 kg / 9.2 lb (with 4 HDDs)
0.96kg / 2.1 lb ( with 1 HDD)
Warranty
3-Year hardware warranty, global support
 
Buy Now
Buy Now

Product Review

Promise Pegasus R4i and J2i add massive storage to the new Mac Pro

Get the newest product review of Pegasus R4i/J2i here!
Let's check out the significant comments brought by Mr. Andrew O'Hara, and the rating is 4.5 out of 5! Bump!

appleinsider
Andrew O'Hara-December 23, 2019

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Promise Pegasus R4i MPX Module – add a massive amount of storage to the Mac Pro

Do you want to know why you should consider it for your Mac Pro? Let’s see why Mr. Jeff Benjamin concerned the benefits of Promise Pegasus J2i to Mac Pro. Watch the hands-on walkthrough for more details.

9to5Mac
Jeff Benjamin- Dec. 20th 2019

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