If I recall correctly, “removed” typically means the drive is failed and offline. “Requested Bypass” happens when the drive has many errors and a proactive sparing copy is internally requested.  Also, if you have configured email or SNMP monitoring from the array you will usually get 2 emails for a single drive failure. One will be “CRU Removed (or Shutdown)” which is the alert for the failed disk, and a second one will be “Unit Shutdown” which is the hot spare stepping in.  Richard J Anderson
Hello,  I have two bad disks in my CX3-40. One disk shows up as removed, the other is in requested bypass state. What does requested bypass mean?  Thanks.
Disk In A "Requested Bypass" State On CX340