On Sat, Nov 11, 2023 at 04:01:47PM -0800, David Christensen wrote:
An obvious difference between internal and external drives is physical
protection. Internal drives and cables are protected. Everything gets
power from the same source (PSU, PCU fed by dual PSU, etc.). External
drives, cables, and power adapters can be moved, yanked, disconnected,
dropped, kicked, subjected to electrostatic discharge, etc.. There are more
parts to fail and more opportunities for failure with external drives than
with internal drives.
This is what I meant: this is why the devices from QNAP / Synology that
are plug and play NAS are also built this way. The Synology devices
can take lots of added modules, seemingly - it all seems expensive
but these are designed for plugging in and the whole thing "just working".