What is InfiniBand switch in Exadata?
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Infiniband Network of Exadata Infiniband switches provide interconnect between Database Server and Cell Server ( Storage Server ).
How do I check my InfiniBand status?
Checking InfiniBand configuration in Linux
- From the Cluster Systems Management/Management Server (CSM/MS), run the following command: dsh -av “ibv_devices | grep ehca” | wc –l.
- Select from the following options:
- Run the following command: dsh -av “ibv_devices | grep ehca” > hca_list.
Which command should you use to confirm the number of hosts in the InfiniBand network?
Use the ibhosts command to list all hosts in the IB network.
What does an InfiniBand switch do?
NVIDIA Quantum InfiniBand switches provide high-bandwidth performance, low power, and scalability, reducing capital and operating expenses and providing the best return on investment. NVIDIA Quantum switches optimize data center connectivity with advanced routing and congestion avoidance capabilities.
What is compute node in Exadata?
Also known as Database Node or Compute Node. This is where the database, ASM and clusterware are run. The clients connect to this. Runs Oracle Enterprise Linux.
Which command shows connectivity information about all nodes in InfiniBand fabric?
To understand the routing that happens within your InfiniBand fabric, the ibnetdiscover command displays the node-to-node connectivity. The output of the command is dependent upon the size of your fabric. You can also use this command to display the LIDs of HCAs.
Is InfiniBand serial or parallel?
Most of these systems send data in parallel across the backplane bus. However, InfiniBand uses serial links and buses to send data one bit at a time, resulting in faster and more efficient communication.
Who uses InfiniBand?
InfiniBand is backed by top companies in the industry, including the steering committee mem- bers: Compaq, Dell, Hewlett Packard, IBM, Intel, Microsoft, and Sun. In total, there are more than 220 members of the InfiniBand Trade Association.
What is InfiniBand in Exadata?
Infiniband Network is a high-performance, very low-latency network layer that is active-active in all directions at 40 Gb / sec, which enables communication between the Database Server and Storage Server like following picture. Full and half Exadata have one main and two secondary Infiniband Switches.
What is the InfiniBand command?
This InfiniBand command is a script the discovers the InfiniBand fabric topology or uses an existing topology file to extract the switch nodes. The ibswitches command is available from the /SYS/Switch_Diag and /SYS/Fabric_Mgmt Linux shell targets of the Oracle ILOM CLI interface.
How do I stop a server in the Exadata Database Machine?
The servers in the Exadata Database Machine follow that. It’s not an Exadata command but rather a general Linux one. To get all the options available, execute: To stop a server, use the shutdown command.
How do I find the InfiniBand topology in Linux?
The listlinkup command is available from the /SYS/Switch_Diag and SYS/Fabric_Mgmt Linux shell targets of the Oracle ILOM CLI interface. This InfiniBand command is a script that discovers the InfiniBand fabric topology or uses the existing topology file to extract the channel adapter nodes.