Error on tape library: "host1 - Fatal open error on PATB-01-D00 (device 0, /dev/nst0)"

Issue

• Error showing:

host1 - Fatal open error on PATB-01-D00 (device 0, /dev/nst0)

• Additionally, unable to see SCSI drive. See the following errors in the log:

Apr  4 16:20:32 host1 avrd[3802]: ioctl error on CAMB-01-D01 (device 0, /dev/nst0) thru sg driver, Success
Apr  4 16:20:32 host1 kernel: mpt2sas0: removing handle(0x0009), sas_addr(0x5000e111597e6002)
Apr  4 16:20:47 host1 avrd[3802]: Fatal open error on CAMB-01-D01 (device 0, /dev/nst0), errno = 2 (No such file or directo
ry), DOWN'ing it
[ ... ]
Apr  5 08:46:22 host1 ltid[3334]: Operator/EMM server has UP'ed drive CAMB-01-D01 (device 0)
Apr  5 08:46:33 host1 avrd[3802]: Fatal open error on CAMB-01-D01 (device 0, /dev/nst0), errno = 2 (No such file or directory), DOWN'ing it
Apr  5 08:52:10 host1 ltid[3334]: Operator/EMM server has UP'ed drive CAMB-01-D01 (device 0)
Apr  5 08:52:18 host1 avrd[3802]: Fatal open error on CAMB-01-D01 (device 0, /dev/nst0), errno = 2 (No such file or directory), DOWN'ing it