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Notes on SAN Boot System Operation
Note the following points when operating the SAN boot system:
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Be sure to confirm that the SAN storage and Fibre Channel switch are both in the Ready state.
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Use the MMB web user interface to set the time period until the partition is powered on.
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When the partition is started, the boot disk may not be found. In this case, reset the partition from the UEFI.
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Record the dates and times of server switching (Fibre Channel card replacement and moves) on separate
media. Prepare this media to protect against the possibly that a faulty part of the hardware can no longer be
located after event log primary analysis, a hardware failure, or the occurrence of some other problem.
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When the Fibre Channel card has been replaced with a maintenance part, the HBA UEFI or traditional BIOS
must be reset. Also, the SAN storage unit must be reset.
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In the SAN boot environment, an OS boot may fail depending on the quality of the Fibre Channel
transmission path. In such a case, use the Fibre Channel switch and SAN storage unit to check the alarm or
system status and identify the faulty part. Then in the Power Control window of the MMB web user interface,
select Reset to restart the system.
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In a Linux environment, a SAN boot in a multipath configuration can be performed. To start in Rescue mode
and automatically mount the SAN disk in such a case, enable only one Fibre Channel port in advance of
startup. If the multipath configuration is left as is, the system may fail to start normally. Even if you do not
use automatic mounting, you should enable only one Fibre Channel port in advance of startup in Rescue
mode to prevent operational errors. For details, see the section “Notes on SAN Boot System Installation.”
