Using an older Mac as a satellite for older apps

Hi,


I'm forced to use an Intel Mac, since I have to run older, incompatible apps. To be true, I'm running them in a Sierra virtual machine under Parallels, on a Mac running in Monterey.


But I want (I pretend I need) a newer Silicon Mac. This can't be done without breaking the compatibility. Parallels can't run Intel apps on a Silicon processor.


I wonder if I could build a system like this:


  • The new Silicon Mac as the main machine. Monitor, keyboard and network router are attached here.
  • An older Intel mac as a satellite machine. Connected to the network via Gigabit Ethernet. Screen Sharing enabled. Always left in sleep.


When I need the older, incompatible Intel apps, I can run the Screen Sharing app on the Silicon Mac, wait for the Intel Mac to wake, and run the Intel-compatible app from there.


In the window of the shared Intel Mac I'll open a network folder, with the data residing in my main Silicon Mac. I'll work with the app on the satellite Intel Mac, and the data in the main Silicon Mac.


I've often worked with a satellite Mac in a room and the main Mac in another, but both the app and data where in the remote main Mac. Connection via PowerLine, not brilliant. This time both Macs will the in the same room, connected to the same router, with nothing breaking the Gigabit Ethernet connection.


Can it work? Will the data transfer be fast and reliable enough to work comfortably with the app in a computer and the data in the other?


Paolo


Mac Pro, macOS 12.7

Posted on Feb 1, 2025 1:28 PM

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Question marked as Top-ranking reply

Posted on Feb 18, 2025 10:16 AM

I could finally set up everything, and it indeed works fine. I'm using the remote Mac in high-resolution, with SwitchResX helping me getting the right size (the native one was too low). It is ready as soon as I run Screen Sharing. The speed of the remotely-run app is the same I remember it was in the same machine used locally. The touchpad pointer is nearly as smooth as in the local machine. Opening/saving files is immediate.


So, yes, it can be done. If you need to run older programs, it can be done with an old Mac frozen with an older operating system. There are no problems, apart for having to keep the remote machine switched on together with the local one. But if it is a low-consumption one (like a mini), it shouldn't be a real issue.


Paolo


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4 replies
Question marked as Top-ranking reply

Feb 18, 2025 10:16 AM in response to PaoloT.

I could finally set up everything, and it indeed works fine. I'm using the remote Mac in high-resolution, with SwitchResX helping me getting the right size (the native one was too low). It is ready as soon as I run Screen Sharing. The speed of the remotely-run app is the same I remember it was in the same machine used locally. The touchpad pointer is nearly as smooth as in the local machine. Opening/saving files is immediate.


So, yes, it can be done. If you need to run older programs, it can be done with an old Mac frozen with an older operating system. There are no problems, apart for having to keep the remote machine switched on together with the local one. But if it is a low-consumption one (like a mini), it shouldn't be a real issue.


Paolo


Feb 18, 2025 12:20 PM in response to PaoloT.

A couple of Parallels Desktop Pro updates ago, it indicated that a future release of Parallels would no longer support a Monterey host. Plan now. I just created a Monterey guest and did a Migration Assistant from a Monterey Time machine drive, then upgraded my Monterey (Intel) iMac to Sequoia 15.3.1.


Parallels Desktop Pro (current release 20.2.1) has what I would consider very early (not ready for production) support for X86_64 guests on Apple Silicon Macs. Since my Intel iMac is being used for Parallels, I have no interest to test this emerging support for X86_64 guests on my M4 Mac Mini Pro.

Feb 18, 2025 1:26 PM in response to VikingOSX

"a future release of Parallels would no longer support a Monterey host"


Good to know. In any case, I've a 2012 Mac mini Quad i7 that I can use to run Intel apps natively on High Sierra. That's the reason why I'm currently interested to a satellite Mac. In the future, going back to Parallels on speedier host Macs will become interesting again.


Paolo



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Using an older Mac as a satellite for older apps

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