Originally Posted by
alainthailande
"Hundreds of gigabytes"? per aircraft? I seriously doubt this, the cost of sending this amount of data over sat links would be prohibitive.
Hope it's not optional, either, as the option not installed in MH370 that made investigators rely on dataless pings to dig out locations.
From Boeing AERO NEWS
" ONS file server. The ONS file server is the hub of the 737 MAX onboard network. Housed in the electronics equipment bay, the ONS file server connects to a
large set of data-rich 737 systems, houses hundreds of gigabytes of mass data storage, sends maintenance data to flight deck displays, and hosts onboard and offboard data processing functions.
Direct connection to the ONS file server via the airline’s maintenance device is provided by a flight deck Ethernet port or by optional connectivity systems. The ONS file server is available on the Next‑Generation 737"