3.7.0 HP StorageWorks HP Scalable NAS File Serving Software administration guide - HP Scalable NAS 3.7 for Linux (AG513-96002, October 2009)

2. If possible, save configuration information from the original switch. Some items
such as the zone configuration are not needed and are just insurance against
further failures. Other items such as the IP address are available elsewhere but
might conveniently be captured here. One way to record the information is to
capture the output of a CLI session. The following commands show types of data
that might be useful:
• show ip ethernet for the IP address.
• show switch for the fabric operating mode.
• show zoning for the zone configuration.
3. After the original switch has been powered down, power up the new switch
and set its IP address to address of the old switch to allow EWS access. The IP
address can be set either from the serial port or by connecting to the current,
possibly default, IP address. Verify that the new switch responds to the IP address.
4. Connect to the EWS and take the switch offline using the Operations > Switch
> Online State tab.
5. Make the switch operating mode and domain ID acceptable to the original
fabric. This can be done either by consulting the fabric or by taking the values
from the data saved in step 2. This procedure might include changing the default
zone setting as directed by EWS when changing interoperation mode. Any
existing zone configuration on the new switch should be removed to allow the
fabric to properly communicate current zoning when the switch joins the fabric.
6. Add the private community to the Configure > Management > SNMP tab and
ensure that it is write enabled.
7. Connect the FC connectors to the new switch. Be sure to plug them into the same
ports as on the original switch.
8. Bring the switch online. The new switch should now connect to the rest of the
fabric. Verify that the HBAs on the servers log into the new switch in the expected
locations.
9. Verify that the new switch has been configured into the cluster. Run the
/opt/hpcfs/sbin/mxmpio status command, which shows whether failover
is enabled or disabled. (See mxmpio(8) for details.)
10. Verify that I/O operations are successful via the new switch. Mount a psd device,
and then use mxmpio to set its active path to one of the paths that goes through
the new switch. Then perform I/O operations such as creating or deleting files
on the mounted psd device.
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