Grant: Thanks for your reply.
On 17 Mar 2019, 10:58 am, grantsymon wrote:
…Personally, I’ve been working with ~100 megapixel image files since around 2007, so I have some experience of TM’s unsuitability for large files.
Right. I do pro audio/video/graphics work. I have hundreds of audio files that average ~900 MB, and video file sizes of ~25 GB. They’re all on external data-only HDDs (T’bolt connection). I back up those with Sync!ProX. Time Machine is not the right tool for that job.
I had problems with Time Machine backing up and reliably restoring my system (boot) volume, which is where all my apps and plugins reside. I have AppleCare, but even with escalating my case, Apple wasn’t able to get it to work. I ended up solving it with Sync!ProX or Super Duper (can’t remember which), but that episode convinced me that Time Machine was not the right backup app for me.
…you could live dangerously and trust your TM backup to be ok, so simply reformat your HD by starting up from Restore Disk (boot holding down CMD-R or other (How to reinstall macOS - Apple Support)) then once complete, Restore your User from TM…
…Once finished, you’d then swap out the internal drive for this new one. There’s a few options to achieve the same, but personally, when this stuff happens, I like to have that extra-double-safety-net and would definitely just leave the existing HD alone, until everything was fine with a second one…
Yep. I actually had as many as three external cloned backups of my internal drive — one on an SSD, and the other two on brand new HDDs. At that point, I had never used Time Machine before, so I wasn’t willing to put all my eggs in that basket. Good thing, too; restoring from Time Machine left many things broken. So the “safety net” approach is an absolute requirement for me. I’m not inclined toward the “living dangerously” approach.
The problem with the Mac Pro 6.1 is that “swapping out the internal drive” is simply not an option, as it is on the Mac Pro 5.1 “Cheese Grater” tower, where there are 4 internal drive bays (more, if you replace the optical drives). With the MP 6.1, there are no drive bays. The internal drive is an SSD on a circuit board that can’t be “swapped out” with anything except another SSD on a circuit board…and once that SSD is outside the Mac, it won’t run anywhere else.
That’s what I mean about dead-end hardware architecture. You get one internal drive, on a circuit board, plugged into a socket on the motherboard, and hard-wired to the power supply with screw terminals, and that’s it. Everything else is “external”, and not interchangeable between external and internal. It’s just stupid functional design…but hey — it sure looks great!
Anyhow, after thinking it through, I’m probably going to have to do the firmware update and upgrade this internal SSD to at least High Sierra anyway, in which case I might as well just go to Mojave. The reason I say that is my suspicion that the new Mac Pro (late 2019…if it actually appears) will most likely come with macOS 10.15, and there’s no telling what will be the minimum system requirement. Only Apple knows…but they have a tendency to limit the lower end OS requirement to the version that’s current at the time the Mac is released.
In that case, I would most likely have to upgrade my Mac Pro 6.1 internal drive to macOS 10.15 before cloning it over to the new Mac Pro.
As it turns out, I still have two fully functional Mac Pro 5.1 machines, both of which will run Mojave…and both of which have internal drive bays. I might end up using one of them to install Mojave on an external HDD clone of my Mac Pro 6.1’s internal system drive, then move that Mojave drive back over to an external T’bolt drive bay on the 6.1, and then see what happens when I boot from that. If everything works, I’ll swap the internal OWC SSD with the OEM SSD, and upgrade that to High Sierra to get the firmware update. Then I’m probably good to run the Mojave installer on the internal SSD, but I won’t risk that without at least two bootable backups of the internal SSD — one on external SSD and another on external HDD.
Feh. I’ve been a Mac user since 1986. It didn’t used to be this complicated.
Thanks again for your reply, amigo.
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