NS0-157 · Question #258
Which make up the replicated database (RDB) rings in a cluster? (choose all that apply)
The correct answer is B. management application (mgmt) D. volume location database (vldb) E. virtual-interface manager (vifmgr) G. SAN management daemon (bcomd). The ONTAP Replicated Database (RDB) is composed of four rings that replicate cluster-wide state across all nodes for fault tolerance.
Question
Which make up the replicated database (RDB) rings in a cluster? (choose all that apply)
Options
- Aprotocol management daemon (protdb)
- Bmanagement application (mgmt)
- Cadministration (admdb)
- Dvolume location database (vldb)
- Evirtual-interface manager (vifmgr)
- Flogical-interface manager (lifmgr)
- GSAN management daemon (bcomd)
How the community answered
(54 responses)- A2% (1)
- B94% (51)
- C4% (2)
Why each option
The ONTAP Replicated Database (RDB) is composed of four rings that replicate cluster-wide state across all nodes for fault tolerance.
The protocol management daemon (protdb) is not one of the defined RDB rings in clustered ONTAP.
The management application ring (mgmt) is one of the four core RDB rings responsible for replicating cluster management data.
The administration database (admdb) is not a recognized RDB ring in the ONTAP cluster architecture.
The volume location database (vldb) ring tracks where volumes reside across the cluster and is a core RDB ring.
The virtual-interface manager (vifmgr) ring replicates logical interface and port state across nodes and is part of the RDB.
The logical-interface manager (lifmgr) is not one of the four RDB rings - LIF state is handled within the vifmgr ring.
The SAN management daemon (bcomd) ring manages SAN-related cluster state such as igroup and LUN mappings, and is one of the four RDB rings.
Concept tested: ONTAP Replicated Database (RDB) ring components
Source: https://docs.netapp.com/us-en/ontap/system-admin/cluster-quorum-node-health-concept.html
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