IBM ESS 5000 SC Series, Hardware Manual

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• Management or provisioning network: The container requires the management or provisioning network
for all deployment-related activities. This primarily evolves code updates, network, and cluster setup
commands via Ansible.
• Clustering Network: This is a high-speed network based on InfiniBand (IB), or 10-Gigabit Ethernet, or
40-Gigabit Ethernet that is used by the IBM Spectrum Scale clients to access data on the Elastic
Storage Server solution.
• External or campus management network: This network is used to remotely access and manage the
EMS and HMC.
• Service or FSP network: The EMS requires this network to power control the POWER9 servers and to
collect Call Home data.
Figure 13 on page 24 shows the ESS 5000 network topology of a mixed ESS 5000 cluster, which
contains ESS 3000 and IBM POWER9 servers.
Figure 13. ESS 5000 network topology
Note: Although connecting EMS to the clustering network is optional, if there is only one building block,
the EMS helps to keep the quorum in a I/O node outage. Also, the high-speed network can be used to
gather data used by a GUI software.
I/O nodes
Figure 14 on page 24 shows the I/O server P2P cabling.
Figure 14. I/O node P2P cabling
Protocol node
Figure 15 on page 25 shows the protocol node P2P cabling.
24 IBM Elastic Storage System 5000: Hardware Guide