IBM N6270, Hardware And Service Manual

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Connecting your system to storage
For SAS connections, the N6200 series system has two onboard SAS ports per
node, labeled 0a and 0b, as shown in Figure 7 on page 14. For the 2858-C10,
2858-C15, 2858-C20, 2858-C21, 2858-C22, and 2858-C25,up to two SAS HBAs per
node can be plugged into the PCI slots to provide additional SAS ports. For the
2858-E11, 2858-E12, 2858-E15, 2858-E21, 2858-E22, and 2858-E25, up to six SAS
HBAs per node can be plugged into the PCI slots to provide additional SAS ports.
For Fibre Channel connections, the N6200 series system has two onboard Fibre
Channel ports per node, labeled 0c and 0d, as shown in Figure 7 on page 14. For
the 2858-C10, 2858-C15, 2858-C20, 2858-C21, 2858-C22, and 2858-C25, up to two
HBAs per node can be plugged into the PCI slots to provide additional Fibre
Channel ports. For the 2858-E11, 2858-E12, 2858-E15, 2858-E21, 2858-E22, and
2858-E25, up to six HBAs per node can be plugged into the PCI slots to provide
additional Fibre Channel ports. Attach the (50- or 62.5-micron) fiber-optic cables
with LC connectors to the Fibre Channel ports.
Note: SFPs must be firmly seated in the Fibre Channel ports before making
connections.
Connecting a filer to storage expansion units
You must connect at least one storage expansion unit per controller module to
your N6200 series filer. A single-controller filer (C10/C15/E11/E12/E15/E16) must
be connected to at least one storage expansion unit. A dual-controller (active/active
or high availability) filer (C20/C21/C22/C25/E21/E22/E25//E26) must be
connected to at least two storage expansion units.
Connecting to SAS storage expansion units
You must use SAS and ACP cables for the connections from the filer to SAS
storage expansion units
For information that describes how to connect your N6200 series filer to SAS
storage expansion units using the onboard SAS ports, see the
Installation and Setup
Instructions that came with your system.
For detailed information about cabling SAS storage expansion units, see the IBM
System Storage N series Universal SAS and ACP Cabling Guide .
Connecting to EXN1000 and EXN4000 storage expansion units
For connections to EXN1000s and EXN4000s, you must use fiber-optic cables for
the connection from the filer to the first storage expansion unit.
For information that describes how to connect your filer using the onboard Fibre
Channel ports to storage expansion units, see the
Installation and Setup Instructions
that came with your storage expansion units.
Attention: If you are connecting to EXN1000 and EXN4000 storage expansion
units, make sure that all storage expansion unit (1Gb/2Gb/4Gb) switches are set to
the 2Gb or 4Gb (if supported) position. If necessary, refer to the documents that
came with the storage expansion unit for information about checking and changing
the switch setting.
Connecting an N6200 series system
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