Setting Up Automated Failover; Configuring Standby Pairs; Identifying Power Sources - HP IBRIX X9720 System Administrator Manual

1. The Fusion Manager verifies that the standby is powered on and accessible.
2. The Fusion Manager migrates ownership of the node's segments to the standby and notifies
all file serving nodes and X9000 clients about the migration. This is a persistent change.
3. If network interface monitoring has been set up, the Fusion Manager activates the standby
user network interface and transfers the IP address of the node's user network interface to it.
To determine the progress of a failover, view the Status tab on the GUI or execute the
ibrix_server -l command. While the Fusion Manager is migrating segment ownership, the
operational status of the node is Up-InFailover or Down-InFailover, depending on whether the node
was powered up or down when failover was initiated. When failover is complete, the operational
status changes to Up-FailedOver or Down-FailedOver. For more information about operational
states, see "Monitoring the status of file serving nodes" (page
Both automated and manual failovers trigger an event that is reported on the GUI.

Setting up automated failover

The recommended minimum setup for automated failover protection is:
1. Configure file serving nodes in standby pairs.
2. Identify power sources for file serving nodes.
3. Turn on automated failover.
If your cluster includes one or more user network interfaces carrying NFS/CIFS client traffic, HP
recommends that you identify standby network interfaces and set up network interface monitoring.
If your file serving nodes are connected to storage through HBAs, HP recommends that you set up
HBA monitoring.

Configuring standby pairs

File serving nodes are configured in standby pairs, where each server in a pair is the standby for
the other. The following restrictions apply:
The same file system must be mounted on both the primary server and its standby.
A server identified as a standby must be able to see all segments that might fail over to it.
In a SAN environment, a primary server and its standby must use the same storage infrastructure
to access a segment's physical volumes (for example, a multiported RAID array).
See "Configuring standby pairs" (page 39)

Identifying power sources

To implement automated failover, perform a forced manual failover, or remotely power a file
serving node up or down, you must set up programmable power sources for the nodes and their
standbys. Using programmable power sources prevents a "split-brain scenario" between a failing
file serving node and its standby, allowing the failing server to be centrally powered down by the
Fusion Manager in the case of automated failover, and manually in the case of a forced manual
failover.
X9000 software works with iLO, IPMI, OpenIPMI, and OpenIPMI2 integrated power sources.
Preliminary configuration
The following configuration steps are required when setting up integrated power sources:
If you plan to implement automated failover, ensure that the Fusion Manager has LAN access
to the power sources.
Install the environment and any drivers and utilities, as specified by the vendor documentation.
If you plan to protect access to the power sources, set up the UID and password to be used.
64).
for more information.
Cluster high availability 39