As a prospective buyer I would never consider such a system unless it had the original internal drive with it. I can't replace it and Apple won't replace it. So such a system without the internal SSD is essentially parts. That's BS.It doesn't diminish the value to buyer just the seller. Need to sell it at a cost where someone can pay to fix what some other company casually destroyed. The major impact here is on the folks to scoop up old equipment form companies, "polish it up" and then sell it used. Middleman businesses.
That appears to be the case.So Apple is saying 'no' to upgrading the boot drive but 'yes' to replacing a failed existing one with a similar size?
So Apple is saying 'no' to upgrading the boot drive but 'yes' to replacing a failed existing one with a similar size?
As a prospective buyer I would never consider such a system unless it had the original internal drive with it. I can't replace it and Apple won't replace it. So such a system without the internal SSD is essentially parts. That's BS.
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It's really simple, when new SSD's are detected and setup by the T2 it stores a UUID on them which references a newly generated encryption key stored in the T2. This allows the user to go back and forth between their old modules and the new ones. It's really not hard and it's almost exactly what Apple is doing with their custom tool available only to their own techs.
I don't recall ever stating (or even implying) that's the case. The problem is one cannot get a new internal SSD for the 2019 Mac Pro. That's what's BS.So an SSD with 4-5 years of modest to heavy wear on this is worth more than a new SSD with no wear. That those two are likely going to end up with the longer operational service lifetime being the drive that starts out with 4-5 in than the brand new one? Yeah, there is some BS here.
All the data on the NAND modules is encrypted. How do you read the UUID when it is already encrypted? The systems that have unencrypted data onto subsections of the drive all expose an additional attack vector. If there is no way to coherently write to the drive from an extern system then have basically eliminated a significant chunk of man-in-the-middle attack vectors. Thereby end up more secure.
The randomly try keys from data read from a fixed location of a just big enough for a UUID data to reside in section of the drive. Errr, that isn't particularly secure. If the UUID ever gets discovered then the key's security is diminished.
errr. If machine is being removed from service then it isn't running anymore. So it doesn't matter to that company if it doesn't run anymore. The company here is throwing away a working drive... that is going to be a base line expense regardless. The company has probably written the value of these systems down to zero anyway. ( The hiccup being outlined here is only when trying to sell a system after it has been written down to zero. ).
If shipping to Apple Mac recycling anyway. Apple could put them back in if they wanted to divert those systems into the refurb market. Which actually is better off with brand new drives. ( as opposed to 3-6 year far more deeply worn ones. )
I don't want to have to use external devices just to boot my Mac. IMO this is a restriction for which I have yet to see a sensible reason for.
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Why not? For a single key implementation what assurances do you have the old key isn't recoverable?
Exactly!! This security need is total BS. There should be the option on the SSD/NAND purchased with the $8K+ computer to replace/mirror/configure...and if one is not capable they can take to Apple Service.
Amazon has it for $2,940.00I agree but I’ve decided to look at the Apple t2 drive as glorified PRam and an emergency kick disk.
It’s whyi got a pci card that can drive 4 u.2 nvme drives. I attached a 15.36tb micron 9300 pro sdd (about $2500) to the $400 high point 7120. Its faster than the Apple drive. Wayyyyyyyyy more storage for way less money and none of the problems associated with the t2.
So Apple is saying 'no' to upgrading the boot drive but 'yes' to replacing a failed existing one with a similar size?
Samsung gives a 10 years warranty on their SSDs. So it's reasonable to expect that the internal SSD need to be changed after about 8 years. At least when Apple stopps support for them or the T2 chip.
Kind of stupid to use a proprietary SSD as firmaware and bootdrive. Or do I miss here anything? Any additional information would be appreciated.
What kind of SSD is Apple using? (https://www.enterprisestorageforum.com/storage-hardware/nand-flash-memory.html)
Apple has essentially designed their own SSD by breaking it out into 3 separate components instead of as one stick. The two cards that are present in the Mac Pro and iMac Pro are just banks of NAND flash memory chips (Likely from SK Hynix, Samsung, Toshiba or Micron).
Usually the SSD contains the controller that manages this NAND and interacts with the computer over a bus like SATA or PCIe. It would appear instead these two NAND banks talk directly to the T2 chip over some custom interconnect. The T2 of course is on the motherboard and not on either of the "flash cards" in the Mac Pro.
The flash memory Apple is using is likely MLC based (2 bits per cell) for high reliability and performance. They've used that on all their prior Mac systems so I doubt they would change it now.
Thanks for the info. So these drives can be handled as normal ones means can easily be formatted and split into partitions as all the "ROM", firmware or whatever is on the T2?
For the user, is a normal drive. You can't access it directly as a T2 storage and mess with the internal/private volumes. T2 presents it to you as a drive and abstracts everything, like the bank splits for Mac Pros with 512GB or more and the management of the internal volumes.Thanks for the info. So these drives can be handled as normal ones means can easily be formatted and split into partitions as all the "ROM", firmware or whatever is on the T2?
Fusion is the marketing name for CoreStorage, T2 storage when you have two NAND banks is lower level than that, more like a RAID-0. See the difference of write speeds between the 256GB and the bigger ones.Thanks a lot for clarifying this.
The 1TB drive is said to be a 2x512GB Raid. Is that some kind of fusion drive to gain speed and drive space?
Fusion is the marketing name for CoreStorage, T2 storage when you have two NAND banks is lower level than that, more like a RAID-0. See the difference of write speeds between the 256GB and the bigger ones.
There is cache on the controller itself, but works the same if you have 256 or 512GB+, buffers on the NAND modules. AFAIK, Apple never explained how the split for dual modules is organised, but since the write speeds are greater with Mac Pros that have dual NAND modules, the controller probably use both NAND banks simultaneously. Someone with access to a NAND bank probably could check how many data lines are available easily from the pinout.So there is some kind of read/write raid-cacheing on T2 level with these two drives?
It's more subtle and complicated than that. You can boot from a RAID array that presents itself as just one disk and don't depend on drivers, like a hardware RAID controller that abstracts the drives and present just one disk to macOS. Some SATA3 RAID controllers work like that. T2 does the same abstraction too.You can boot the new mac pro off almost any drive you want, say a 2tb 970 evo in a slot, or even a spinner like a 4tb seagate barracuda if you like Just not a raid array....
thats pretty much in line with how i feel, its not worth it ... boot speeds from a single pcie ssd, even in a 5,1 are fine, and i imagine with a 7,1 they are better.It's more subtle and complicated than that. You can boot from a RAID array that presents itself as just one disk and don't depend on drivers, like a hardware RAID controller that abstracts the drives and present just one disk to macOS. Some SATA3 RAID controllers work like that. T2 does the same abstraction too.
Other than that, since Apple did not yet implemented APFS for RAID volumes, if you really want boot from RAID, you can hack it. It's a complicated process to do and a headache to apply macOS updates, but people are doing it. I did it when I got the SSD7101A-1, but it's not something I'd do today, I don't want the software updates headache.