000-221 · Question #185
What is depicted in the following diagram?
The correct answer is C. Asynchronous GLVM mirroring. The diagram depicts Asynchronous GLVM mirroring, an AIX feature that replicates logical volume data across geographically separated sites with asynchronous write acknowledgment.
Question
What is depicted in the following diagram?
Exhibit
Options
- ALong distance NFSv4 mount
- BCluster Aware AIX linked cluster
- CAsynchronous GLVM mirroring
- DCross site disk heartbeat
How the community answered
(62 responses)- A11% (7)
- B3% (2)
- C77% (48)
- D8% (5)
Why each option
The diagram depicts Asynchronous GLVM mirroring, an AIX feature that replicates logical volume data across geographically separated sites with asynchronous write acknowledgment.
An NFSv4 long distance mount depicts a file system export and mount relationship between hosts, not the underlying volume-level mirroring topology shown in the diagram.
A Cluster Aware AIX (CAA) linked cluster diagram shows inter-node heartbeat paths and disk-based communication, not geographic volume replication across sites.
Geographic Logical Volume Manager (GLVM) enables cross-site disk mirroring by creating remote physical volumes (RPVs) that replicate local volume group data over an IP network. In asynchronous mode, writes are acknowledged to the application after the local write completes, and replication to the remote site occurs in the background, which reduces write latency while maintaining disaster recovery capability.
Cross-site disk heartbeat is a CAA mechanism for cluster health monitoring via shared disks, not a volume mirroring or data replication topology.
Concept tested: AIX GLVM asynchronous geographic mirroring
Source: https://www.ibm.com/docs/en/aix/7.3?topic=volumes-geographic-logical-volume-manager
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