IBM TotalStorage SAN140M, Installation And Service Manual

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SAN140M Installation and Service Manual 192
IML, IPL, or reset the director
An IML or reset is performed at the CTP front panel using the IML or
the RESET button. An IPL is performed through the Element
Manager application. The EFCM Basic Edition interface does not
provide an IML, IPL, or director reset function.
ATTENTION! A reset should only be performed if a CTP card failure is
indicated. Do not reset the director unless directed to do so by a procedural
step or the next level of support.
An IML and IPL are functionally equivalent. The operations do not
cause power-on diagnostics to execute and are not disruptive to Fibre
Channel traffic. Both operations:
• Reload director firmware from FLASH memory.
• Reset the Ethernet LAN interface, causing the connection to the
management server to drop momentarily until the connection
automatically recovers.
A director reset is disruptive to Fibre Channel traffic and resets the:
• Microprocessor and functional logic for the CTP card and reloads
the firmware from FLASH memory.
• Ethernet LAN interface, causing the connection to the
management server to drop momentarily until the connection
automatically recovers.
• Ports, causing all Fibre Channel connections to drop momentarily
until the connections automatically recover. This causes attached
devices to log out and log back in, therefore data frames lost
during director reset must be retransmitted.
IML the director (CTP front panel)
To IML the director from the CTP front panel:
1. Press and hold the IML button for approximately three seconds.
2. During the IML, the director-to-management server Ethernet link
drops momentarily and the following occur at the Hardware View:
— As the network connection drops, the Status table turns
yellow, the Status field displays No Link, and the State field
displays Link Timeout.