This program sets the clock (date and time) on 3ware 9xxx series controllers from the system clock, so that the BBU installation and test dates are correct.

I'm not entirely sure what mechanism was intended to do this originally, the linux driver only synchronizes time of week whilst the system is running, and I didn't find any code to do this in the 3ware BIOS.

optional argument is the 3ware controller you wist to set the date on otherwise it assumes /dev/twa0

The utility only sets the clock if it's wrong by more than 15 seconds.

root@otherthing:~/projects/twa_t/twa_t/src# ./twa_t 
Controller time is: Sun Jan  1 13:29:27 1970
Controller time difference is 1484524828.0 seconds
Setting controller time
Controller time is: Sun Jan 16 12:29:55 2017
root@otherthing:~/projects/twa_t/twa_t/src# 

A kernel patch which does much the same thing is included in the directory kernel-patch