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74 Adding TL895 Tape Drives to the Compaq Enterprise Backup Solution
Display of a FC-AL with a Missing Fibre Channel
Tape Controller
The figure below shows a Fibre Channel Host Controller highlighted with a
Fibre Channel Tape Controller missing. This indicates that while the Tape
Controller has become inactive on the FC-AL since the utility was started.
This could mean that it has been physically disconnected or that errors are
occurring on the FC-AL at a great enough frequency to prevent the device
from maintaining login.
If there are a large number of errors occurring in the FC-AL, the Fibre
Channel Host Controller may not be able to communicate with the Fibre
Channel Tape Controllers on the FC-AL. In this case, the Fibre Channel
Controllers may appear to be offline in the program, although in reality they
are physically connected to the FC-AL. When a FC-AL shows errors, the Fibre
Channel Array and Tape Controllers may alternate between being logged-on
the FC-AL or missing.
Figure 6-17. Display of a FC-AL with a Fibre Channel Tape Controller
shown as missing
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