Storage Subsystem Sas Drive Channel/Loop Schemes For Enclosures In A Dcs3860 With Gen2 Controllers Configuration; Connecting The First Exp3800/Dcs3700 Expansion Enclosure - IBM System Storage DCS Series Installation And Migration Manual

3. Connect the last DCS3700 expansion enclosure in the chain to controller B:
4. In reverse order (last in chain to first in chain), connect the ESM in SBB slot B
For detailed information about cabling the DCS3700 storage enclosures to the
DCS3700 configuration, see the IBM System Storage DCS3700 Storage Subsystem with
Gen2 Controllers Installation, User's, and Maintenance Guide..
Storage subsystem SAS drive channel/loop schemes for
enclosures in a DCS3860 with Gen2 controllers configuration
The DCS3860 storage system with Gen2 controllers supports up to five
EXP3800/DCS3700 expansion enclosures with two physical expansion ports.
Multiple EXP3800/DCS3700 expansion enclosures can be connected by chaining
them together.
The following illustration shows the supported cabling configuration to connect a
DCS3860 storage subsystem with Gen2 controllers to the storage enclosures and
between the storage enclosures with SAS drive channels.
ESM
ESM
Figure 7. Connecting the first EXP3800/DCS3700 expansion enclosure
Complete the following steps to connect the first EXP3800/DCS3700 expansion
enclosure to the DCS3860 storage system with Gen2 controllers .
a. Connect one end of a SAS cable to the drive expansion port on controller B.
b. Connect the other end of the SAS cable to one of the In ( ) SAS connectors
on the ESM in SBB slot B in the last DCS3700 expansion enclosures of the
chain that you created.
to the DCS3700 first expansion enclosure in the chain:
a. Connect one end of a SAS cable to the Out ( ) SAS connector on the right
ESM of the DCS3700 expansion enclosure that you just connected.
I
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DC AC
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1 2
ID/Diag
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1 2
ID/Diag
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DC AC
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Chapter 3. Adding or migrating storage enclosures
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