Replacing A Failed Sfp Module - IBM TotalStorage DS4400 User Manual

v Four indicator lights on a mini-hub provide status information. If an SFP module
v If you replace the SFP module and still experience problems, the DS4400
v Do not mix long-wave SFPs and short-wave SFPs on a single storage server.

Replacing a failed SFP module

When instructed by the storage-management software, complete the following steps
to replace an SFP module from the mini-hub.
Statement 3:
CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or
transmitters) are installed, note the following:
v Do not remove the covers. Removing the covers of the laser product could
v Use of controls or adjustments or performance of procedures other than
DANGER
Attention:
the LC-LC Fibre Channel cable before you remove the SFP module.
fails, the corresponding SFP port bypass indicator will be lit on the mini-hub. For
more information about indicator lights, see "Mini-hub indicator lights" on page
33.
Storage Server might have defective components or connections. Check the
storage-management software for indications of other component failures.
Use either long-wave SFPs or short-wave SFPs. You can use the DS4000
Storage Manager client to view the Storage Subsystem Profile in order to verify
that you are not mixing long-wave and short-wave SFPs.
result in exposure to hazardous laser radiation. There are no serviceable
parts inside the device.
those specified herein might result in hazardous radiation exposure.
Some laser products contain an embedded Class 3A or Class 3B laser
diode. Note the following. Laser radiation when open. Do not stare into the
beam, do not view directly with optical instruments, and avoid direct
exposure to the beam.
To avoid damage to the cable or SFP module, make sure you remove
1. Remove the LC-LC Fibre Channel cable from the SFP module that has failed.
For more information, see "Handling fiber-optic cables" on page 5 and
"Removing an LC-LC Fibre Channel cable" on page 10.
2. Replace the protective caps on the LC-LC Fibre Channel cables.
Chapter 3. Replacing DS4400 Storage Server components
59