Log-off for usb flash disk?

i use SSD on all of my rigs. I wil set up new 10 rigs. i saw some problems if we use usb flash disk. there will be no problem if we do log-off option after boot up the HiveOS. is it enough we do it once ? or should we do it on each restart/upgrade/power-lost ?

works permanently until logs-on command will be used