Thank you for your detailed answers
I tried to change a new valid SN for 918+(1780PDN058013), but it still auto reboot when i Transcoding.
I've completely emptied the hard disk and the U disk,
then use the same old SN (and same vid pid mac) to creater a 1.02b loader
install the DSM_DS3617xs_15284.pat
so get a new DSM6.1 nas.
"Offiline Transcoding"can work well,Everything is normal
so i think i must wait the newloader to use DSM6.2
I hope that the question I reflect can be noticed.
in the DSM6.2
if i disable the "ACPI HPET" in BIOS,
Transcoding still very slowly,but the auto reboot be a lot less.