Fibre Channel ServerNet Adapter Installation and Support Guide (G06.28+, H06.06+, J06.03+)

NOTE: In some cases, a security parameter might prevent the WWNs from being updated
automatically after replacement, even if the FCSA ports are directly connected to the ESS fibre
channel ports. If the WWNs fail to update when you install the replacement FCSA, you need to
download the firmware by adding and starting disks for the WWNs to become visible in the
STATUS ADAPTER command. You need these WWNs to complete the FCSA to ESS Connection
Form that you must give to the ESS administrator.
There are two SACs on the FCSA. If neither of these SACs is working, the storage subsystem
automatically switches any DISK objects using them to backup paths. Thus, you need only replace
the hardware and restart the original paths.
However, one SAC might fail while the other is still working. DISK objects might be using paths
that include that other SAC. When you replace an FCSA because only one of its SACs is not
working, ensure that any DISK objects using the working SAC have a working backup path
before you move the adapter. You also need to use the SCF SWITCH ADAPTER command to
move the DISK objects to the working path before removing the FCSA.
NOTE: There can be 256 DISK objects configured on an FCSA SAC. The SWITCH ADAPTER
command can move all of them and can stop all of them, but you need to restart each of them
individually. Use the forms in Appendix A, FCSA Configuration Forms for ESS Connections to
help you keep track of the disks.
Prepare to Replace an FCSA
Preparation Checklist
1. “Gather the Proper Tools” (page 50)
2. “Print the FCSA Forms” (page 50)
3. “Plan the Installation” (page 51)
4. “Identify the Devices” (page 51)
5. “Switch the Paths to Another FCSA” (page 55)
6. “Stop the Devices That Are Using the Adapter” (page 55)
7. “Label the Fibre Channel Cables ” (page 55)
Gather the Proper Tools
See Gather the Proper Tools on page 2-8.
Print the FCSA Forms
Print two copies of the FCSA Configuration Form (located in Appendix A, FCSA Configuration
Forms for ESS Connections) and use one to record information about the FCSA that you are
replacing and the other to record information about the new FCSA.
If you are using the same path as the existing FCSA to connect the replacement FCSA to the ESS,
you can transfer all the information about the DISK objects to the new form. In this case, you
only need to write new information in the Identifying Information of the FCSA portion of the
FCSA Configuration Form. If you have a lot of disks and paths, the appendix provides forms for
recording those as well.
NOTE: In this procedure, you are replacing an FCSA in the same slot, so you can retain the
same information for the Location of the FCSA on the configuration form. If you are installing
the new FCSA in a new slot, use the procedure in Section 4, Relocating an FCSA.
For procedures for filling in the configuration forms, see Start Completing the Configuration
Forms on page 2-4.
50 Replacing an FCSA