Dell SC4020 Deployment Manual page 70

Using SFP+ Transceiver Modules
An SC4020 storage system with 10 GbE iSCSI storage controllers uses short range small-form-factor
pluggable (SFP+) transceiver modules.
Figure 56. SFP+ Transceiver Module with a Bail Clasp Latch
The SFP+ transceiver modules are installed into the front-end ports of a storage controller. Fiber-optic
cables are connected from the SFP+ transceiver modules in a storage controller to SFP+ transceiver
modules in Ethernet switches.
Guidelines for Using SFP+ Transceiver Modules
The SC4020 storage system supports the use of SFP+ transceiver modules for 10 GbE iSCSI connectivity.
Before installing SFP+ transceiver modules and fiber-optic cables, read the following guidelines.
CAUTION: When handling static-sensitive devices, take precautions to avoid damaging the
product from static electricity.
• Use only Dell-supported SFP+ transceiver modules with the SC4020. Other generic SFP+ transceiver
modules are not supported and may not work with the SC4020.
• The SFP+ transceiver module housing has an integral guide key that is designed to prevent you from
inserting the transceiver module incorrectly.
• Use minimal pressure when inserting an SFP+ transceiver module into an FC port. Forcing the SFP+
transceiver module into a port may damage the transceiver module or the port.
• The SFP+ transceiver module must be installed into a port before you connect the fiber-optic cable.
• The fiber-optic cable must be removed from the SFP+ transceiver module before you remove the
transceiver module from the port.
Cleaning Fiber-Optic Ports
Cleaning fiber-optic ports is an important requirement for maintaining quality connections between
fiber-optic equipment. Any contamination in the fiber connection can result in degraded performance or
communication failures.
Micro-deposits of oil and dust on the fiber-optic ports of the transceiver modules or fiber-optic cable
connectors can cause loss of light, reduction in signal power, and possibly intermittent problems with the
optical connection.
To avoid problems with connections between fiber-optic equipment, Dell recommends that you clean
the fiber-optic ports and connectors each time you make a connection.
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Connect the Front-End Cabling