I am trying to take backup of one DB Which is showing Continuosly I/O Error 21 (The device is not ready) deteceted during read at offset 0x000000000000000040 in file e:\test.ndf Error 823. The Step Failed.
The backup was running smoothly for last 2 years.
Database Configuration is Test.mdf--->d:\ Test.ldf----> D: Test.Ndf----> E:\ USB Drive
Database is running smoothly.