Small Form-Factor Pluggable (Sfp) Modules; Servicing Notes; Removing And Installing A Power Supply Cru - IBM TotalStorage DS4400 User Manual

Figure 45. Removing and installing a power supply CRU
4. Unpack the new power supply.
5. Install the new power supply, as shown in Figure 45. Using the pull handle,
6. Plug in the power cord and turn on the power supply switch.
7. Check the new power supply and other DS4400 Storage Server indicator lights

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
DS4400 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 when servicing SFP modules:
v The SFP module housing has an integral guide key designed to prevent you from
v Use minimal pressure when inserting the SFP module into a mini-hub port.
v You can insert or remove the SFP module while the storage server is powered
v The operational loop performance is not affected when you install or remove an
v You must insert the SFP module into a mini-hub port before you connect the
v You must remove the fiber-optic cable from the SFP module before you remove
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IBM TotalStorage DS4400 Fibre Channel Storage Server: User's Guide
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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 41.
push the power supply into the slot until it locks into place.
for faults. For more information, see "Checking the indicator lights" on page 27.
inserting the SFP module improperly.
Forcing the SFP module into a port could cause damage to the SFP module or
the port.
on.
SFP module.
fiber-optic cable.
the SFP module from the mini-hub.
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