the event log as below
A request to mount Active or Passive database was processed in 0.0214939 seconds.
Error code: NoError (0x00000000)
Information Store - (47140,R,0,15.01.1779.002) The database engine has begun replaying logfile E:\Program Files\Microsoft\Exchange Server\V15\Mailbox\database\E04.log.
Previous Log Processing Stats:
 395.168726 -2.929166 (1584) CM +J(CM:1584, PgRf:329433, Rd:3696/31, Dy:3782/520119, Lg:139787869/556120) +M(C:1341976K, Fs:237443, WS:363016K # 348824K, PF:1381028K # 1367372K, P:1381028K).
Then run a log to copy to E drive
“Information Store - MBX - Senior01 (47140,R,0,15.01.1779.002) MBX - Senior01: The database engine has begun replaying logfile E:\Program Files\Microsoft\Exchange Server\V15. “
how to avoid this status , because when failover to other database , around 1 hr the database will auto switch to original database and mounted back
is it the right not good or other possible reason
it is too trouble because the status happen the user outlook will no response and hang