My MacPro 2019 is going to be sold soon and I was wondering if I could continue using the 4 disks of my Pegasus R4i (RAID 5) in an external device, connected to my new Mac Studio?
Thank you in advance.
Pegasus R4i - using disks in an external device?
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- Last Post 2 days ago
Matthias Deneke
posted this
28 November 2025
Frank Bosma
posted this
28 November 2025
- Last edited 28 November 2025
Hi Matthias,
yes, you can install the 4 disks in any external Pegasus device, for instance the Pegasus32 R4, but they will also work fine in a 6 or even 8 bay unit.
The existing logical drive on your disks will mount as before.
It does need to be a Promise Pegasus device though due to our proprietary hardware RAID engine.
https://www.promise.com/Products/Pegasus/Pegasus32
Kind regards,
Frank
Matthias Deneke
posted this
4 days ago
Hi Frank,
thank you for your help.
I live in Germany and all I can find are Pegasus devices with included drives. Can I somewhere buy e.g. a Pegasus32 R4 without drives?
Best,
Matthias
Frank Bosma
posted this
2 days ago
As far as I know Promise only sells new Pegasus devices with HDDs through distributors and resellers listed on the 'where to buy' page.
It is possible that certain resellers offer refurbished devices (if available of course) but I assume these also come with disks.
Best bet for empty chassis would be 2nd hand market place sites like ebay.
The disks will work in any model Pegasus but only the Pegasus3 and 32 models have the USB-C type Thunderbolt3 connection.
For older versions you will also need a Thunderbolt 2 > 3 adapter from Apple to connect it to new Mac host.
