3. If a control enclosure is already installed, you can optionally add Fibre Channel
connections between all the control enclosures.
v This involves both the physical installation of the cables and configuring the
correct zoning on the Fibre Channel switches.
v Configure the network so that every node canister has at least two
connections to every node canister in a different control enclosure.
v You must configure the network before you attempt to add a control
enclosure to an existing system.
Connecting a control enclosure to a host with onboard SAS
connectors
When you install a control enclosure, you can connect it to a host with SAS cables.
On Storwize V5020 systems, you can use the 12 Gbps onboard host SAS ports or
an optional 4-port 12 Gbps SAS host interface adapter. Onboard SAS host ports are
not available on Storwize V5010, Storwize V5030, or Storwize V5030F systems.
About this task
Two types of SAS cables are used for host attachment, depending on the
requirements of the host.
v Mini SAS HD to Mini SAS HD (Figure 136 on page 152)
Figure 135. Example Storwize V5020 configuration with four Fibre Channel cables per
canister
Chapter 2. Installing the system hardware 151
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