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Promise Technology 8TB Pegasus J2i Internal Storage Enclosure for Mac Pro

BH #PRP3J2IHD8 • MFR #P3J2IHD8
7 reviews
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Promise Technology 8TB Pegasus J2i Internal Storage Enclosure for Mac Pro
Key Features
  • Designed for the Mac Pro (2019 and 2023)
  • 1 x 8TB 7200 rpm SATA 3.5" HDD
  • 2 x 3.5" SATA III Drive Bays
  • Preformatted HFS+
Expand the internal storage of your 2019 or 2023 Mac Pro using the 8TB Pegasus J2i Internal Storage Enclosure from Promise Technology, which comes preinstalled with an 8TB 7200 rpm SATA III 3.5" hard drive that is formatted HFS+. If you'd like to further expand your Mac Pro's storage capacity, a second 3.5" drive bay is available. Equipped with a SATA III interface, the Pegasus J2i connects to the internal circuits of your Mac Pro using custom power and data cables.
More Details
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Expected availability: 2-4 Weeks
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$474.99
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Capacity
8TB
18TB
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Promise Technology J2i Internal HDD Overview

Expand the internal storage of your 2019 or 2023 Mac Pro using the 8TB Pegasus J2i Internal Storage Enclosure from Promise Technology, which comes preinstalled with an 8TB 7200 rpm SATA III 3.5" hard drive that is formatted HFS+. If you'd like to further expand your Mac Pro's storage capacity, a second 3.5" drive bay is available. Equipped with a SATA III interface, the Pegasus J2i connects to the internal circuits of your Mac Pro using custom power and data cables.

  • Custom 2-bay enclosure and cable assembly
  • One 8TB 7200 rpm SATA hard drive pre-installed and pre-formatted HFS+
  • Bay and kit for optional additional 3.5" SATA HDD (to be installed by end-user)
  • Compatible with 2019 Mac Pro (Intel x86 CPU) and 2023 Mac Pro (M2 Ultra CPU)
UPC: 704118146468

Promise Technology J2i Internal HDD Specs

Key Specs
Designed For
Apple Mac Pro
Total Capacity
8 TB
Drive Type
3.5" HDD
Designed For
Apple Mac Pro
Total Capacity
8 TB
Drive Type
3.5" HDD
Performance
Encryption Support
No
General
Dimensions
6 x 4.8 x 3.9" / 152.4 x 121.9 x 99.1 mm
Weight
2.1 lb / 1 kg
Packaging Info
Package Weight
3.035 lb
Box Dimensions (LxWxH)
8.3 x 7.1 x 7"

Promise Technology J2i Internal HDD Reviews

Perfect!

By Alan
Rated 5 out of 5
Date: 2021-07-03

Just finished installing this product without any problems. Added another SATA and everything works as advertised. Yes, the cable is short, but doesn't interfere with air flow.

LOVE THE ERGONOMICS

By WILLIAM
Rated 5 out of 5
Date: 2020-03-11

JUST WHAT I WAS LOOKING FOR. HIDDEN AND OUT OF THE WAY.. AND..I CAN ADD ANOTHER ONE!!

See any errors on this page?

What is the maximum read speed?

What is the maximum read speed?
Asked by: Chad
Based on the HDDs used its around 215-220 MB/s.
Answered by: Bennie
Date published: 2020-08-03

Is this available without the drive? If not, ...

Is this available without the drive? If not, what's the make and model for those who want to install a matched pair?
Asked by: James
Consider the Sonnet Fusion Flex J3i (also here at B&H). It is an empty enclosure, so you can choose your own drives. It will also hold a third SSD.
Answered by: Ben
Date published: 2022-06-30

I would like to purchase a compatible 8tb drive ...

I would like to purchase a compatible 8tb drive for this, is there any update on what that product is, and a link to purchase it?
Asked by: Chad
I now it comes with one, but I want to purchase the second one, so I would have 16tb. There seems to be some confusion as to whether or not it is even possible to purchase a 2nd drive that is compatible.
Answered by: Chad
Date published: 2020-07-24

Is this compatible with the 2023 (M2) Mac Pro ...

Is this compatible with the 2023 (M2) Mac Pro Rackmount version?
Asked by: Egan
Yes, the Promise Technology 8TB Pegasus J2i Internal Storage Enclosure for Mac Pro is compatible with the 2023 Mac Pro Rackmount version.
Answered by: JP A
Date published: 2025-09-14
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