IBM TotalStorage DS4500, User Manual

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Attention: When you handle static-sensitive devices, take precautions to
avoid damage from static electricity. For details about handling static-sensitive
devices, see “Handling static-sensitive devices” on page 43.
4. Unpack the new power supply.
5. Install the new power supply, as shown in Figure 45. Using the pull handle,
push the power supply into the slot until it locks into place.
6. Plug in the power cord and turn on the power supply switch.
7. Check the new power supply and other DS4500 Storage Server indicator lights
for faults. For more information, see “Checking the indicator lights” on page 26.
Small Form-Factor Pluggable (SFP) modules
Small Form-Factor Pluggable (SFP) modules are used to connect mini-hub ports to
attached nodes. An SFP module slides into a mini-hub port on the back of the
DS4500 Storage Server and then a host or drive-interface cable connects into the
SFP module. For more information, see “Fibre Channel connections” on page 4 and
“Mini hubs” on page 63.
Servicing notes
Consider the following factors when you service SFP modules:
v The SFP module housing has an integral guide key designed to prevent you from
inserting the SFP module improperly.
v
Use minimal pressure when you insert the SFP module into a mini-hub port.
Forcing the SFP module into a port could cause damage to the SFP module or
the port.
v You can insert or remove the SFP module while the storage server is powered
on.
v The operational loop performance is not affected when you install or remove an
SFP module.
Figure 45. Removing and installing a power supply CRU
Chapter 3. Replacing the DS4500 Storage Server components
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