D-PWF-OE-00 Practice Questions

This question asks for the core components that make up the PowerFlex software-defined storage system.

Meta Data Manager (MDM) (Option B): The MDM is the control plane. It manages the mapping of data, monitors the state of the system, controls rebuilds/rebalances, and acts as the central point for configuration. Without the MDM, the cluster cannot function or change state.

Storage Data Server (SDS) (Option A): The SDS is the data plane. It is the software installed on every node that contributes storage. It abstracts the local drives, performs I/O operations, and communicates with other SDSs to replicate data.

Incorrect Options: VMware Horizon (C) is VDI software that uses PowerFlex, but is not part of it. PowerProtect (D) is backup software.

Sufficient network bandwidth (Option A): PowerFlex replication is typically asynchronous. However, the link (WAN) between sites must be sized correctly to handle the change rate of the data. If the application writes 1GB/s but the WAN link is only 100MB/s, the replication buffer (Journal) will fill up, and compliance will break (RPO violation).

Compatible replication protocols (Option D): Both the source and target clusters must be running compatible versions of the PowerFlex software to understand the replication metadata and data stream format.

Incorrect Options: Storage pools do not need to be identical (C)—you can replicate from an NVMe pool to a cheaper HDD pool at the DR site. Snapshot retention (B) is a local backup setting, not a replication prerequisite.