Replacing
SCSI Host Bus Adapters |
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After a SCSI Host Bus Adapter (HBA) card failure, you can
replace the card using the following steps.
Normally disconnecting any portion of the SCSI bus will leave
the SCSI bus in an unterminated state, which will cause I/O errors
for other nodes connected to that SCSI bus, so the cluster would
need to be halted before disconnecting any portion of the SCSI bus.
However, it is not necessary to bring the cluster down to do this
if you are using a SCSI configuration that allows disconnection
of a portion of the SCSI bus without losing termination.
SCSI bus configurations using SCSI inline terminators or Y
cables at each node, or using a SCSI device which auto-terminates
its ports when disconnected (such as the MSA30 MI), can allow online
repair.
Halt the node. You can use Serviceguard Manager to do this,
or use the cmhaltnode command. Packages should fail over normally to other
nodes.
Remove the SCSI cable from the card.
Remove the defective SCSI card.
Install the new SCSI card. The new card must be
exactly the same card type, and it must be installed in the same
slot as the card you removed. You must set the SCSI ID for the new
card to be the same as the card it is replacing.
Attach the new SCSI card.
Add the node back into the cluster. You can use
Serviceguard Manager to do this, or use the cmrunnode command.
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