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HCP architecture

HCP hardware consists of:

  • Servers
  • Internal and/or SAN storage
  • Networking components such as cables and switches
  • Additional infrastructure items such as racks and power distribution units

HCP uses back-end, front-end and optionally, if the HCP hardware is configured to support it, management networks. The isolated back-end network connects the HCP nodes to each other through two redundant back-end Ethernet switches. Each node has a pair of bonded Ethernet ports that are used to connect the node to these switches.

Each storage node is configured with an additional pair of bonded Ethernet ports that allows external applications to access the system. The recommended configuration options are:

  • Two independent Ethernet switches that connect the ports to the front-end network
  • One Ethernet switch, with both HCP and the switch configured for active-active bonding

For VM systems, this hardware configuration applies to the physical environment in which HCP-VM runs.

RAIN system architecture

The following figure shows the architecture of an HCP system that uses internal storage. This system has four storage nodes, two back-end switches (on the left), and two front-end switches (on the right).

RAIN system architecture

The table below describes the cables in this figure.

CableConnects fromConnects to
Red and blue EthernetBack-end NICs in each nodeBack-end switches
Green and yellow EthernetFront-end NICs in each nodeFront-end switches
Purple EthernetBack-end switchesEach other
Black powerEach nodeTwo PDUs
Each back-end switchOne PDU
SAIN system architecture

The following figure shows the architecture of an HCP system that uses a Fibre Channel SAN storage system. This system has four storage nodes, two modular storage trays, two back-end switches (on the left), and two front-end switches (on the right). Each node has multipathed access to the shared SAN storage.

SAIN system architecture

The table below describes the cables in this figure.

CableConnects fromConnects to
Red and blue EthernetBack-end NICs in each nodeBack-end switches
Green and yellow EthernetFront-end NICs in each nodeFront-end switches
Purple EthernetBack-end switchesEach other
Orange Fibre ChannelEach nodeSAN array
Black powerEach nodeTwo PDUs
Each back-end switchOne PDU
Each storage trayTwo PDUs
Note

Nodes in HCP SAIN systems are either individual servers or individual blades in blade servers. The figure above shows individual servers. Some HCP SAIN systems include Fibre Channel switches between the nodes and the SAN arrays.

VM system architecture

The physical environment for an HCP-VM system has the same architecture as an HCP SAIN system. That is, the servers that host the virtual machines on which HCP runs have multipathed access to shared SAN storage. The physical switch and port configurations are the same as for SAIN systems.

Depending on the number of physical servers and the capabilities of those servers, a VM system can have one or more HCP nodes running on a host on each server. The following figure shows the physical environment for a VM system with four HCP nodes, each running in its own physical server. For information about the hardware configuration in this figure, see "SAIN system architecture" above.

VM system architecture

 

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