HP StorageWorks 9100 Extreme Data Storage System administration guide V1.0.2 (AN540-96018, February 2010)

9. Reconnect the SAS cables.
10. Determine whether the running firmware is 1.8.x.x or 2.x.x.x as explained earlier in this procedure.
Exit from the OA CLI (ireturn to the shell prompt). If the firmware is 1.8.0.0, no further action is
needed. If the firmware is 2.x.x.x, Zone the SAS Switch using the following command:
exds_zone_sas -z -s <sysname> –ic <bay-number> –u exds –p <password>
where <bay-number> is the the bay (3 or 4) of the replaced switch and <password> is the
OA password of the exds user. To replaced bay 3, you would enter the a command like the
following:
exds_zone_sas -z -s glory-ic3 -u exds -p hpinvent
11. Run the exdsmgr syscheck command to validate the firmware versions.
Removing a functional SAS switch in bay 3 or 4
Use this procedure to remove a SAS switch that is in active use; for example, to re-seat an active
switch or to replace a switch that is partially degraded because of one or two failed ports.
NOTE:
NOTE: When a SAS switch is replaced or reset, the switch reboots. As soon as it becomes operational
again, I/O that previously went through the other SAS switch might start to use the newly rebooted
switch. It is normal for filesystem I/O operations to stall for a few minutes while this occurs. The
procedure described in this section minimizes this stall period, but does not completely remove it.
To remove a functional SAS switch, follow these steps:
1. Stop monitoring operations on the system by entering the following command:
pdsh –a service somon_scripts stop
Note that the exdsmgr command will show stale data until you next restart monitoring.
2. Run theexds_stdiag tool and save the output. This data may be useful in subsequent analysis.
The tool examines storage from only one blade server. If you are investigating a suspected
problem with a SAS switch port or specific blade server, run the tool on all servers and save the
results.
3. Remove the SAS switch and associated SAS cables making note of which cable was connected
to which port.
4. re-seat or replace the SAS switch and reattach the SAS cables. If you are replacing the switch
with a replacement switch, follow the instructions in Replacing a failed SAS switch in bay 3 or
4to update the firmware and if necessary, zone the switch.
5. As soon as the SAS switch reboots, run the exds_stdiag command. If you are investigating a
suspected problem with a SAS switch port or specific blade server, run the command on all
servers and save the results. You call tell if the SAS switch is operational if each array has two
visible controllers. This means that a path exists from the blade server to each controller.
6. Retart monitoring by entering the following command:
pdsh –a service somon_scripts start
Replacing the P700m mezzanine card
1. Shut down the server blade:
9100 Extreme Data Storage System administration guide 111