6.0 HP X9720 Network Storage System Administrator Guide (AW549-96034, December 2011)
Replacing the X9700cx I/O module
IMPORTANT: You might need to change the firmware of a replaced I/O module; therefore,
schedule system downtime of approximately one hour to perform this procedure.
There are four I/O modules in an X9700cx chassis—two I/O modules (primary/secondary) for
each of the drawers: two on the left, two on the right. Within each drawer you can hot swap one
I/O module at a time. Disconnecting both I/O modules interrupts I/O operations.
The capacity block must be brought to a quiescent state before I/O module replacement, and I/O
module firmware must be flashed to a consistent state—that is, all four I/O modules must be on
the same firmware version, before returning the X9700cx to normal operation.
To replace the X9700cx I/O module:
1. Unmount the file systems. For more information, see the HP X9000 File Serving Software File
System User Guide.
2. Ensure that the disk drawer is fully pushed in and locked.
3. Disconnect the SAS cable connecting the I/O module to the X9700c controller.
4. It is normal for the X9700c controller connected to the I/O module to reset itself. The
seven-segment display of the X9700c enclosure will no longer show “on,” and the X9700c
controller will have an amber warning light. If the I/O module had previously failed, the
X9700c controller will already be in this state.
5. Remove the I/O module.
6. Replace the I/O module (it will not engage with the disk drawer unless the drawer is fully
pushed in).
7. Re-attach the SAS cable. Ensure it is attached to the “IN” port.
8. Change the firmware of the I/O modules to the version included in the ExDS system.
a. Identify the serial number of the array using the command:
exds_stdiag
b. Run the X9700cx I/O module firmware update command:
# /opt/hp/mxso/firmware/exds9100cx_scexe –s
The command will pause to gather the system configuration which can take a several
minutes on a large system. It then displays the serial number of an array and asks if it
should be updated. If the serial number displayed is not the array to be updated, select
N for “no.” The command will continue to display serial numbers. When it reaches the
desired array, select Y to update the firmware.
NOTE: If you reply Y to the wrong array, let the command finish normally. This can do
no harm since I/O has been suspended as described above (and the I/O modules should
already be at the level included in the ExDS system).
c. After the array has been flashed, you can exit the update utility by entering q to quit.
d. Press the power buttons to power off the affected X9700c and X9700cx.
e. Disconnect all power cables from the X9700cx enclosure until the LEDs on the rear of the
unit extinguish. Reconnect the power cables to the enclosure.
f. Re-apply power to the capacity block. Power on the X9700cx first, then the associated
X9700c. The firmware update occurs during reboot so the reboot could take longer than
usual (up to 25 minutes). Wait until the seven-segment display of all X9700c enclosures
goes to the “on” state before proceeding. If the seven-segment display of an X9700c has
not returned to "on" after 25 minutes, power cycle the complete capacity block again.
9. Run the exds_stdiag command to verify the firmware version. Check that the firmware is
the same on both drawers (boxes) of the X9700cx. Following is an example of exds_stdiag
output:
136 Replacing components in the X9720 Network Storage System