3. Replace the protective caps on the cable ends.
4. Replace the protective cap on the SFP module.
Cabling the DCS3700 expansion enclosure
The DCS3700 expansion enclosure is a dual ESM unit which provides additional storage capacity when
attached to the DCS3700 storage system.
ESM connectors
The following illustration shows the connectors on the ESM.
SAS In connector 1
Connect a SAS cable to this connector and to either the drive expansion port on the DCS3700
controller or the SAS Out (↓) connector of another DCS3700 expansion enclosure.
SAS In connector 2
Connect a SAS cable to this connector and to either the drive expansion port on the DCS3700
controller or the SAS Out (↓) connector of another DCS3700 expansion enclosure.
SAS Out connector
Connect a SAS cable to this connector and to the SAS In (↑) connector of another DCS3700.
Note: Each ESM contains two SAS In connectors. You can use either SAS In connector but only one SAS
In connector can be used at a time.
Connecting the DCS3700 expansion enclosure
The DCS3700 storage system supports up to two DCS3700 expansion enclosures per physical expansion
port, so multiple DCS3700 expansion enclosures can be connected by chaining them together.
To connect the DCS3700 storage system RAID controllers A and B to a single DCS3700 expansion
enclosure, complete the following steps:
Figure 32. Removing the LC-LC Fibre Channel cable
1 2
ESM
SAS in connector 1 SAS in connector 2 SAS out connector
Figure 33. ESM connectors
Chapter 3. Cabling the DCS3700 51
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