7065Cabling.fm Draft Document for Review August 30, 2007 12:59 am
38 IBM System Storage DS3000: Introduction and Implementation Guide
When removing an SFP module, make sure that you correctly release the locking
mechanism. SFP modules can have either a plastic or wire tab, which is used to unlock the
latch and allow for easy removal. Before trying to remove the SFP module, make sure that
you disconnect the FC cable.
Even though the SFP modules can be either long-wave or short-wave, the DS3400 only
supports short-wave SFP modules. Therefore, make sure that you use only supported SFPs.
Use an LC-LC FC cable to connect the SFP module to a SAN switch port or to an FC HBA.
Figure 3-6 shows such a cable.
Figure 3-6 LC-LC FC cable
Direct-attached DS3400
Figure 3-7 shows a simple direct-attached configuration. Two host servers are connected to a
dual-controller DS3400. Each server uses two FC HBAs, so this is a fully redundant setup. If
an HBA, FC cable or RAID controller fails, the host servers will still have access to logical
drives. This type of setup is suitable for a two-node Microsoft Cluster Server configuration.
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