Originally Posted by
bigdaddyooo
First I was addressing the comment someone made about swapping msata cards from another machine. Second....the reason you are having to CN update the cards is because they ARE failing. Clearly you understanding behind the issue is lacking. So solid state drives, and all flash memory have a finite number of times they can be written to before the cells or blocks within the chips start to fail or go corrupt. MSata ssd drives were chosen to replace sd cards due to the much higher endurance of NAND flash vs the sd card, along with the fact that they have algorithms built in ( TRIM) to manage block wear and reads and writes to the drive. HOWEVER, when the first Phoenix and Griffin machines came out, along with some of the others, the TRIM feature set was not enabled. It was not finally enabled until 4.0 firmware on the Phoenix and there is a tech bulletin backing this up. Without TRIM enabled the drives basically were running defrag constantly because a solid state is programmed to fill each memory block fully and to keep all parts of that data file together much like on your computer in defrag. So without TRIM the drives wear out very quickly and fail. Again this is documented in a tech bulletin along regarding E7 codes and no boot I believe. I can find the number if you are interested. SO.....CN update will temporarily get the machine back up just like you could do with SD cards, sometimes....but it is not a permanent solution. You can check the label on the mSata and if the sticker is less than 4.0 figure its probably gonna fail soon. If it is newer, your mileage may vary. I prefer to fix the issue the first time and not have to go back. Im responsible for over 750 machines in my territory and if I fixed my machines like some of you I would have tons of callbacks, pissed customers and more headaches than I care to deal with.
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