If you want your storage on one system, but compute on another, that's iscsi/nfs shared with an external compute.  This is more enterprise-y for remote storage, but you can export nfs between them easy enough with how-to's and run vm's remote, presuming your network and storage can handle the iops.

If you want to access the virtual desktop via vnc/rdp running on another system, you just need a server and client for either vnc, or rdp.

You can run a vnc session per virtual desktop in virtualbox and flip between them mostly.  I tend to go for a multi-monitor giant workspace with multiple systems/windows across them, but works well when in various systems and workspaces in enterprises doing work.

If your vm's run on your local system, you can attach to the desktop framebuffer direct via vbox ui console, and across as many systems as you can run.  I usually run multiple vm systems at a time with the console, some with desktops (tails mostly), most others not, but use vbox effectively with it, and/or kvm on my desktop when the desktop works.  If I get frisky, I spawn multiple monitors on windoze to use like a dual or 3-monitor setup when using visio in a large setup with vbox.  Even 4k displays this has worked with vbox, kvm not so much. 

Oracle is good for something at least with vbox being a decent product over time, at least until they try to sue you randomly for using it.

-mb


On Sun, Apr 12, 2020 at 2:28 AM David Schwartz via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:
Well, how would you approach what I’m asking about in your preferred *nix platform? I’m sure there’s a very similar if not identical way to solve it in my situation.

-David Schwartz



> On Apr 12, 2020, at 1:51 AM, Steve Litt via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:
>
> Wouldn't these questions be better asked in a Mac mailing list?
>
> SteveT
>
> On Sun, 12 Apr 2020 07:41:26 +0000 (UTC)
> David Schwartz via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:
>
>> I’ve got a 2014 Mac Mini with 16GB RAM and 2TB of SSD.
>>
>> I’m thinking of getting a newer one with more RAM, which can be
>> upgraded by uers. But the SSD is soldered to the board, so it’s not
>> expandable. (My 2014 unit has space for a couple of 2.5” drives I
>> guess, and it can be upgraded in the field as well, although I bought
>> this from an outfit that did the upgrade.)
>>
>> I have some VMs that take up 80-120 GB of disk space, and they eat up
>> nearly 700 GB of SSD.
>>
>> At work, we have a bunch of VMs on servers somewhere that we can
>> access via VNC connections. Of course, we have to be logged in to our
>> company domain using VPN. So there’s a lot of overhead in
>> communicating with those VMs.
>>
>> As an aside, I think one of the coolest things about MacOS is it’s
>> multiple desktops — I think they call them “Spaces” these days. I
>> have 10 of them set up that I can access via <Ctrl-1> .. <Ctrl-0>. I
>> use different desktops for different things, and usually keep apps
>> and browser windows open for related stuff on the same desktop.
>>
>> Now suppose I were to get a new faster Mac Mini with more RAM and
>> literally stack it on top of my existing one. I’m curious about a
>> couple of things.
>>
>> First, what’s the best way to set things up so I could use one the
>> way I currently am (eg, as my “desktop” machine), and then set up a
>> VNC window (or ?) on one or more of the desktops so when I switch to
>> them, it looks like I’m working on the other machine?
>>
>> The other thing I’m wondering is how to go about using the “desktop”
>> machine (assume it’s the newer one) to run VMs or apps that reside on
>> the other (headless) machine with minimal delays in data access.
>>
>> Like … would I stick a short ethernet cable between the two e-net
>> ports? (Would it need to be wired as a null-modem / cross-over
>> cable?) Or maybe a short Thunderbolt or USB3 cable between them?
>> Would a hardwire connection be faster than using WiFi through my
>> router? I do realize that if I got a 3rd machine, I’d probably need a
>> switch. But with just two?
>>
>> As I said, my VMs are 80-120 GB, and since I only have 16 GB of RAM,
>> clearly it’s not necessary to have the entire VM loaded to run it.
>> Copying them in their entirey can take a while, so is it even
>> possible to run one on my “desktop” machine even if it’s residing on
>> the other machine — without copying it?
>>
>> (I’ve read where people used to use Apple’s OSX Server for things
>> like this, but it has apparently been so dumbed-down that people say
>> it’s useless today.)
>>
>> -David Schwartz
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