Configuring HyperFabric
Configuring HMP for Transparent Local Failover Support
•After executing the clic_start command on all node in the cluster, ensure that you run Oracle RAC only after one minute (approximately).
•If all the trunks between the switches are down, then execute clic_shutdown followed by clic_start on all the nodes in the cluster, after replacing at least one trunk between the switches.
•Maintain at least one trunk between the switches when Oracle RAC is running in the cluster.
•If any of the nodes is shut down for administrative reasons, shut down Oracle RAC before executing clic_shutdown on that node. In such a case, Oracle RAC continues to be operational on all the other nodes in the cluster. When you bring up the node that was shut down, it joins the cluster.
| How Transparent Local Failover Works |
| Consider a hypothetical HyperFabric configuration in a |
| having two adapters (see Figure |
| failure, and all adapters that are installed on any given node are configured as part of a |
| card pair. |
Figure | A Configuration supporting Local Failover |
node A
| { |
| HF |
|
|
| adapter 1 |
| |
CardPair 0 |
|
|
| |
|
| |||
| HF |
| ||
|
|
| adapter 0 |
|
|
|
|
|
|
|
|
|
|
|
HF Switch 0
node C
| { | HF |
|
| adapter 0 |
| |
CardPair 0 |
|
| |
|
| ||
HF |
| ||
|
| adapter 1 |
|
|
|
|
|
|
|
|
|
node B
| HF |
|
| 0 Pair Card |
| adapter 0 |
| { | |
|
|
| ||
|
|
| ||
| HF |
| ||
|
|
| ||
| adapter 1 |
|
| |
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
HF Switch 1
node D
| HF |
|
|
| adapter 1 |
| 0 Pair Card |
|
|
| |
|
| { | |
| HF | ||
|
| ||
| adapter 0 |
| |
|
|
|
|
Chapter 4 | 83 |