The aggr split command is used to divide a mirrored aggregate into two separate, unmirrored aggregates. The command aggr split aggr0/plex0 aggrNew takes the mirrored aggregate aggr0, separates its plex named plex0, and uses that plex to create a new aggregate named aggrNew. The original aggregate, aggr0, is left with its remaining plex(es) and is no longer mirrored. Consequently, the operation results in two distinct, unmirrored aggregates: the original aggr0 and the newly created aggrNew. Both aggregates will contain a full copy of the data from the moment of the split.

A: aggrNew is the name of the new aggregate, not a new plex.

B: The command creates a new aggregate from an existing plex; it does not create two new plexes.

C: The new aggregate aggrNew is formed from a single plex, making it unmirrored by definition.

E: Volumes are not split between the aggregates; a complete copy of all volumes exists on both resulting aggregates.

1. NetApp ONTAP 9.7

Logical Storage Management Guide

Page 101: In the section "Splitting a mirrored aggregate

" the guide states

"You can split a mirrored aggregate... The split results in two unmirrored aggregates

each of which contains one of the plexes of the original aggregate." This directly supports the creation of two unmirrored aggregates.

2. NetApp ONTAP 9

Command Reference

storage aggregate split start man page: The command description explicitly states

"This command splits a mirrored aggregate into two unmirrored aggregates." This confirms the outcome described in option D.

3. NetApp Technical Report TR-4075

"SyncMirror and MetroCluster for Disaster Recovery in Clustered Data ONTAP

" Section 4.2: This document describes the aggregate split process. It explains that after a split

"the original aggregate and the new aggregate are both unmirrored aggregates." This reinforces that both resulting aggregates are unmirrored.