HP's Gen8 / Gen9 Server (Microserver) iLO NAND Flash symptomatic failure
I mentioned it previously in another Apple article regarding how it's not just onboard SSDs that punters need to be wary of in terms of soldered NAND (flash) ICs and built-in obsolescence.
The Apple T2 chip will have onboard NAND flash storage within it, for the secure enclave and there has been no mention by Apple on the design life of this NAND storage in terms of the number of data writes to such a device. It could potentially only have a 4-5 year operating life too, aka. Built-in obsolescence.
This has shown to be true in terms of HP's Gen8 / Gen9 / Gen10 Server (Microserver) iLO 4Mb NAND Flash storage and how we are seeing symptomatic failure of this onboard soldered NAND IC due to the way data is continually written to the system health, onboard temps etc, and it's ability to get into a race condition and continually write to the NAND causing its premature failure, causing failure just outside the warranty period.
What's interesting (what we have found from investigating this as we've had several fail outside the warranty period) is that HP themselves have produced a technical white paper outlining the inherent design fault and it's clear from the document, that the fault has been there since manufacture and that HP has failed to take action promptly (the first firmware 2.61 to tackle this was released in Aug 2018, with most sales much earlier than this 2014 onwards) in terms of capping the number of daily writes to the NAND IC.
In the technical white paper, HP clearly acknowledge the issue and how it causes built in obsolescence if the NAND fails before the firmware is upgraded to mitigate the excessive number of writes to the NAND (additionally, this gem of document - seems the perfect technical white paper to show legal liability in order to obtain recompense in terms of a UK court),
The problem is, if you contact HP support channels, it's still a very expensive chargeable replacement / swap-out for a board replacement outside the warranty period.
You have to ask, how can that be given the contents on the white paper, HP(E) seem to be blatantly flouting UK consumer law by not honouring a replacement / swap out of the motherboard to fix this issue.
Here's the technical white paper (worth saving if you operate lots of these HP Gen8/Gen9/Gen10 servers/HP microservers).