Owner's manual

Troubleshooting
Silo Media Manager Installation and User’s Guide—541559-001
C-22
UNIT ATTENTION SENSE KEY
UNIT ATTENTION SENSE KEY
The library generates a Unit Attention sense key for all initiators if the library
needs to inform the host of an asynchronous event.
INSUFFICIENT RESERVATION RESOURCES
SMM Message: 6291: Sense Data - Unit Attention, Power-On Occurred
Explanation:
The library generates this type of Unit Attention when the library is powered-on,
IPLed from the operator panel, or reset over the SCSI bus. A Unit Attention is
generated for all initiators.
SCSI BUS RESET
SMM Message: 6292: Sense Data - Unit Attention, SCSI Bus Reset
Explanation:
The library generates this type of Unit Attention to all initiators after the SCSI
bus is clear of all I/O processes following a hard reset.
BUS DEVICE RESET MESSAGE OCCURRED
SMM Message: 6292: Sense Data - Unit Attention, Bus Device Reset Message Occurred
Explanation:
The library generates this message to all initiators after the library is clear of
all I/O processes following a hard reset.
NOT READY TO READY TRANSITION
SMM Message: 6280: Sense Data - Unit Attention, Not Ready-to-Ready Transition
Description Sense
Key
ASC ASCQ
Power-On Occurred 6h 29h 01h
Not Ready-to-Ready Transition 6h 28h 00h
CAP Element Accessed 6h 28h 01h
Mode Parameters Changed 6h 2Ah 01h
Reservations Preempted 6h 2Ah 03h
Reservations Release 6h 2Ah 04h
Registrations Preempted 6h 2Ah 05h
Microcode Has Been Changed 6h 3Fh 01h
SCSI Bus Reset 6h 29h 02h
Bus Device Reset Message Occurred 6h 29h 03h