DataDirect Networks EF2800, User Manual

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DataDirect Networks EF2800 FC RAID Storage System User Guide (V 1.0)
T r o u b l e s h o o t i n g a n d P r o b l e m S o l v i n g
10.15 Setting Up and Viewing the Debug Log
You can set up additional logging when instructed by DataDirect
Network’s technical support personnel.
Summary of Debug Log Capabilities
• Single controller debug information: available from the Disk Array
Administrator via the serial port on each controller module.
Because of the direct connection of the serial port to a storage
controller, debug information from this port can sometimes
provide information unavailable from the Ethernet port, but this
information will only be from one storage controller of the
redundant storage controller pair. This information is available as
long as one individual controller can boot, read its flash memory
and communicate with it’s serial port.
• Combined log debug information: available through the SAM via
the Ethernet port on each controller module.
This set of logs will have several advantages over the single
controller logs, but will also have a limitation in that collecting all
the log data and passing it out via the Ethernet port requires a
greater amount of hardware/software to be operational than for
the single controller serial port case. Therefore, in some product
failure scenarios the combined logs will potentiality have some
holes in the debug data and it will also be necessary to review the
single controller logs.
10.15.1 Collecting Debug Logs
For most problem scenarios you should collect three logs, a combined
log from one of the two SAM Ethernet port connections and a single
controller log from each of the two Disk Array Administrator local
serial port connections.
N
OTE
: If one of the redundant controllers is down we recommend that
you restart that Storage Manager module, if possible, before collecting the
debug logs.