Owner's manual

Troubleshooting
Silo Media Manager Installation and User’s Guide—541559-001
C-23
UNIT ATTENTION SENSE KEY
Explanation:
The library generates this type of Unit Attention when the library transitions to a
ready state from a not ready state. This transition can occur following any condi-
tions that cause a not ready state. A Unit Attention is generated for all initia-
tors.
CAP ELEMENT ACCESSED
SMM Message: 6281: Sense Data - Unit Attention, CAP Element Accessed
Explanation:
The library generates this type of Unit Attention when the operator opens and
closes the CAP.
MODE PARAMETERS CHANGED
SMM Message: 62A1: Sense Data - Unit Attention, Mode Parameters Changed
Explanation:
The library generates this type of Unit Attention when a different initiator per-
forms a Mode Select operation.
PERSISTENT RESERVATIONS/REGISTRATIONS PREEMPTED OR RELEASED
SMM Message: 62A3 Sense Data - Unit Attention, Reservations Preempted
SMM Message: 62A4 Sense Data - Unit Attention, Reservations Released
SMM Message: 62A5 Sense Data - Unit Attention, Registrations Preempted
Explanation:
The library generates these type of Unit Attention sense keys when one initiator
has its persistent reservations or registrations cleared by another initiator.
MICROCODE HAS BEEN CHANGED
SMM Message: 63F1: Sense Data - Unit Attention, Microcode Has Been Changed
Explanation:
The library issues this Unit Attention sense key after executing a Write Buffer
command to update the functional microcode for the library.
DEFAULT
SMM Message: 6nn: Sense Data - Not Ready, Unknown Sense
Explanation:
The ASC or ASCQ code is an unknown code.