Getting media write error from a particular media server

Hello All,

I am facing error 84 from a media server particularly from a drive. When I checked the logs I found below:

Nov 23 19:08:47 p02danbs04 acsd[25036]: [ID 857816 daemon.error] Fatal open error on OC9940B_a1p02d07 (device 13, /devices/pci@82,2000/fibre-channel@1/fp@0,0/sg@w500104f0006fae27,0:raw), errno = 19 (No such device), DOWN'ing it

Media server OS:  Solaris

Netbackup Version : 6.5