C4040-332 - High Availability for AIX - Technical Support and Administration -v2
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There is a two-node cluster with Node1 and Node2. An administrator changes filesystem size on Node1 by using the chfs command, and moves resource the group to Node2. The administrator finds the change of filesystem size is recognized on Node2. Why is the filesystem size change reflected on Node2?
The shared volume group is re-imported on Node2 by lazy update when moving the resource group.
When using PowerHA 7, a shared volume group (VG) must be configured as___________.
Enhanced concurrent VG
In order to utilize PowerHA 7 SAN based communications in a VIO Server environment, what task must be performed on the AIX client nodes?
Add a virtual Ethernet adapter and specify VLAN 3358.
What does the gsclvmd daemon do?
Enhanced concurrent mode logical volume sizes are kept synchronized across nodes
A PowerHA 6 cluster uses IPAT with aliasing and disk heartbeat. The administrator noticed the standby node crashes during a failover test. There are entries related to the Dead Man Switch (DMS) timeout in the AIX error log. Which action is recommended to reduce the risk of DMS timeouts?
Set Failure detection rate of diskhb network module to slow.
An administrator wants to shut down a node which has a resource group from the HMC. Which shutdown option results in a node shutdown without failover?
Operating System Immediate
Failure to plan for which element will have a negative impact on PowerHA cluster availability, when using virtual I/O resources on the cluster nodes?
Planning for update of Virtual I/O Servers
In which configuration would an AIO Cache LV be required?
When using mirror pools
A PowerHA 6 cluster has missed too many heartbeats during a large disk write operation, and has triggered the deadman switch. Which tunable can help ensure that HA Cluster Manager continues to run?
I/O Pacing and syncd frequency
After installing PowerHA packages, what is the next step when configuring the cluster?
Add cluster boot addresses, service addresses and hostnames to /etc/hosts.
After upgrading one node of a 2-node cluster to PowerHA 7, an administrator discovered that the wrong disk was chosen for the repository disk. What must be modified on both nodes to correct this error without starting over from the beginning?
An administrator finds that a colleague has increased the size of a file system in an Enhanced Concurrent Volume Group using base AIX commands. How can the administrator make the cluster configuration consistent again?
Run Synchronize a Shared Volume Group Definition.
PowerHA automatic error notification for shared data volume groups traps on which specific error?
To provide a secure cluster environment, an administrator will use VPN tunnels for communication between the nodes in a cluster. What must be defined on the nodes for communication across the VPN tunnel?
Persistent IP Labels
An administrator is configuring a PowerHA 6 cluster to use disk heartbeat as a non IP network. A shared volume group, dhbvg, has been configured using a single disk, hdisklO, on NodeA and NodeB. The administrator believes that the prerequisites have been met, but would like to test connectivity of the disk heartbeat network before adding the network into the cluster. How can the connectivity of this disk heartbeat network be tested?
On NodeA run the command/usr/sbin/rsct/bin/dhb_read-p hdisk10-rOn NodeB run the command /usr/sbin/rsct/bin/dhb_read-p hdisk10-t
An administrator has a 2-node cluster and has chosen the C-SPOC option to bring a resource group offline. The resource group was stable on the primary node prior taking resource offline, however it has gone into an error state. The administrator corrects the error and issues the clruncmd to continue cluster processing. What will happen to the resource group?
The resource group goes offline.
A company is determining how they can use DLPAR operations within PowerHAto maximize the usage of their system. Which DLPAR attribute can be controlled through PowerHA?
The minimum and desired processing units required to start an application server
A cluster administrator wants to be sure that specific resource group will failover to the node with the most available processor resources. Which configuration supports the requirement?
Use dynamic node priority based on PctTotalTimeIdle.
What is the command used to check the status of all interfaces and hearbeats in a PowerHA 7 cluster?