2018.10.82 At the 6.5.3+ updates the web Gui / SSH / etc becomes fully inaccessible during the 20 hour dual disk parity check.   Attempting server use results now in a crashed system.  Dropping to single parity / dropping plug-ins (cache dir, etc) allows the system to continue to function as a pure Nas.    Swapped in an unused Asus P8Z77-I Deluxe with 16 GB of ram, the latest 2014 bios, and a i7-3770K with hyperthreading disabled (spectre/meltdown) - and a single thread passmark o