Planning for 100 Gbps adapter
Review the pre-requisite system requirements and installation considerations before deployment.
It is helpful to be familiar with the following term when you are considering the features of the 100 Gbps
adapter for these connections.
Remote Direct Memory Access (RDMA)
RDMA is a networking standard that allows the adapters to transfer data directly to or from the
endpoints in a connection without using CPU resources on either of the endpoints. These transfers
occur simultaneously with other system operations and do not impact overall system performance.
When the system performs an I/O operation over an RDMA-based connection, data is sent directly to
the network, which reduces latency and increases the speed of data transfers.
Review the following elements when you are deciding to install the 100 Gbps adapters:
• The following adapters are available:
– AJZL: CX-6 InniBand/VPI in PCIe form factor
- InniBand - HDR200 200 Gb / HDR100 100 Gb / EDR 100 Gb
- Ethernet - 100 GbE
– AJZN: CX-6 DX in PCIe form factor (Ethernet - 100 GbE)
• Each canister has one port used for management functions and one additional port, the SSR service port
- mini USB serially connected, which is used by the SSR to check hardware and set the IP address.
Planning for cables
Connections for IBM Elastic Storage System 3200
Care must be taken to note the orientation of each server canister in IBM Elastic Storage System 3200 so
that the interconnect cables are properly connected.
IBM Elastic Storage System 3200 contains two server canisters. A label on IBM Elastic Storage System
3200 identies each server canister and power module. In the following gure, server canister A/1 is on
the left side and server canister B/2 is on the right side.
Figure 16. Label showing the orientation of rear view of the server canisters and power modules
For example, the following gure shows the ports on IBM Elastic Storage System 3200.
Chapter 3. Planning for hardware
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