Replacing an E4SA CRU

Replacing an E4SA CRU
This procedure describes how to replace an Ethernet 4 ServerNet adapter (E4SA) CRU in a
NonStop S-series server online. You might need to replace an E4SA CRU if it has failed or
partially failed. You do not need to shut down the system before replacing an E4SA CRU.
The following is a high-level summary of the tasks required to complete the E4SA CRU
replacement procedure. Each task in this outline is linked to step-by-step instructions about
how to perform the task. Angle-brackets (for example, <line-name>) are used in command
syntax to indicate values that you must provide. After you complete a task, click the check
box.
Preparation:
1 Read the notes and cautions.
2 Gather the proper tools.
3 Identify any communications lines and ServerNet wide area network (SWAN)
concentrators using the E4SA CRU to be replaced.
4 Quiesce any customer applications using the E4SA CRU to be replaced.
5 Stop the communications lines and SWAN concentrators using the E4SA CRU to
be replaced.
Note: This step is optional. Most communications lines are suspended when
an E4SA CRU is removed and are automatically resumed when the E4SA CRU
is replaced. You should be aware that numerous Event Management Service
(EMS) messages are generated if communications lines are not stopped before
the E4SA CRU is removed; these messages do not require any recovery action.
6 Determine the physical location of the E4SA CRU to be replaced.
7 Abort the E4SA CRU to be replaced.
8 Label the communications cables connected to the E4SA CRU to be replaced.
Replace the E4SA CRU:
1 Remove the E4SA CRU to be replaced.

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