IBM TotalStorage 3494 Tape Library Operator's Manual page 480

Table 26. Problem Determination Using System Summary Window (continued)
Field Name
CU ports
A hexadecimal number, 0–F (depending on the port
configuration), should be displayed for each tape
controller port. If a dash (–) is displayed, that port is not
initialized. No communication between the Library
Manager and the tape controller occurs. If the port to a
tape drive is not initialized, automated operations for the
drives in that subsystem cannot be performed.
LAN Attach Ports
A decimal count of the number of LAN-attached hosts
that are initialized currently with the 3494 Tape Library.
If no hosts are initialized with the 3494 Tape Library, this
shows as a dash. For example, if there are three hosts
initialized with the 3494 Tape Library, this number is 3. If
one host goes down, this number changes to 2 when the
3494 Tape Library tries to communicate with that host.
Convenience I/O
Empty or Volumes present should be indicated.
Unknown indicates that the system has not been taught
and Not Available indicates that the convenience I/O
station has been made unavailable.
Convenience I/O Mode
Insert or Import should be indicated.
High capacity status
Failed indicates that the high-capacity operation has
failed to complete.
Inventory update
Failed indicates that the Inventory Update operation has
failed to complete.
Overall system
OK should be indicated. Degraded indicates that a
component in the 3494 Tape Library has failed, but the
3494 Tape Library is continuing to operate. Failed
indicates that a component has failed, and operations
cannot continue.
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3494 Tape Library Operator Guide
Action
1. Ensure that all tape drives in the library are powered
on. Perform the power-on procedure for the tape
drives.
2. Check the Error indicator on the tape controller setup
panel. If it is lit, that tape controller has a serious
fault; call your service representative to repair the
control unit.
3. Call your service representative.
The number in this field is not, by itself, an indication of
failure. If there seems to be a problem communicating
with a host, select Status on the Operator window action
bar, then select the LAN Status... option to view the
status of all LAN-attached hosts. Select the host in
question from the list of hosts and note the last two
columns of the display. If the host is initialized currently,
the column labeled Init contains a 1.
If a host was initialized and something happened to
cause the host to seem to go down (to the 3494 Tape
Library), the column labeled Init is a 0, because the
library is not initialized currently with that host. The
column labeled Prev Init is a 1, because that host was
initialized at one time with the 3494 Tape Library. This
field is accurate only since the last time the Library
Manager was started.
Call your service representative to teach the system or
make the convenience I/O station available.
Call your service representative to teach the system or
make the convenience I/O station available.
Call your service representative.
Call your service representative.
If Failed is indicated, call your service representative. If
Degraded persists, also call your service representative.