On Thu, Mar 2, 2023 at 4:49 PM Roger Heflin <rogerheflin@gmail.com> wrote:
if you suddenly lose power there is a fair chance that the last few
blocks of data had not made it to disk yet.

Some data can be replaced, but there are also real-time data flows
where data are lost forever when the system does down.  I recall a
lost-of-data incident where the system was on UPS+ generator but
IT hadn't received the replacement for a failed UPS battery in the
network closet.  

--
George N. White III