HP StorageWorks 4000 Compaq StorageWorks Fibre Channel Troubleshooting Guide - Page 46

Determine a Bad Link

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4-6 Compaq StorgeWorks Fibre Channel Troubleshooting Guide Determine a Bad Link Begin Are Fibre Channel Array Controllers missing? Were FC-AL errors No detected? No Yes Done Are all Fibre Channel Array Controllers missing on a particular FC-AL? No Determine which Fibre Channel Array Controllers are missing by highlighting the server. All of the Fibre Channel Array Controllers attached to the Host Adapter Yes in the server will blink their drive tray LEDs. To troubleshoot the missing Fibre Channel Array Controllers, go to Checking the Link between the Storage Hub 7 and Fibre Channel Array Contoller flow chart. Determine which loop has the errors by highlighting one Host Bus Adapter at a time and looking at the Error Histogram. Once the FC-AL is determined find the failing device by unplugging one device at a time from the Fibre Storage Hub 7. Watch for errors to clear from the histogram. Depending on the failing device found, refer to the Checking the Link between the Storage Hub 7 and the Fibre Array Controller flow chart or Checking the Link between the Storage Hub 7 and the Host Bus Adapter flow chart. Go to Checking the Link beween the Storage Hub 7 and the Host Bus Adapter flow chart.

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4-6
Compaq StorgeWorks Fibre Channel Troubleshooting Guide
Determine a Bad Link
Begin
Are Fibre Channel Array
Controllers missing?
Were FC-AL errors
detected?
Are all Fibre
Channel Array Controllers
missing on a particular FC-AL?
Go to Checking the Link
beween the Storage Hub 7 and
the Host Bus Adapter flow chart.
Depending on the failing
device found, refer to the
Checking the Link between
the Storage Hub 7 and the
Fibre Array Controller flow
chart or Checking the Link
between the Storage Hub 7
and the Host Bus Adapter
flow chart.
Once the FC-AL is determined
find the failing device by
unplugging one device at a time
from the Fibre Storage Hub 7.
Watch for errors to clear from
the histogram.
Determine which loop has the
errors by highlighting one Host
Bus Adapter at a time and looking
at the Error Histogram.
Determine which Fibre Channel Array
Controllers are missing by
highlighting the server. All of
the Fibre Channel Array Controllers
attached to the Host Adapter
in the server will blink their
drive tray LEDs.
To troubleshoot the missing
Fibre Channel Array Controllers, go to
Checking the Link between the
Storage Hub 7 and Fibre Channel
Array Contoller flow chart.
Yes
Done
No
No
No
Yes