Which SyncMirror command mirrors an existing unmirrored aggregate where Data ONTAP selects
the disk drive?
A.
aggr mirror aggrY
B.
aggr mirror aggrY -m
C.
aggr mirror aggrT -d 12@144
D.
aggr mirror aggrY -m 12@144
Explanation:
https://library.netapp.com/ecmdocs/ECMP1196890/html/man1/na_aggr.1.html
aggr mirror aggrname
[ -f ]
[ -n ]
[ -v victim_aggrname ]
[ -d disk1 [ disk2 … ] ]
Turns an unmirrored aggregate into a mirrored aggregate by adding a plex to it. The plex is either
newlyformedfrom disks chosen from a spare pool, or, if the -v option is specified, is taken from
another existingunmirrored aggregate. Aggregate aggrname must currently be unmirrored. Use
aggr create to make a new,mirrored aggregate from scratch.
Disks may be specified explicitly using -d in the same way as with the aggr create and aggr add
commands.
The number of disks indicated must match the number present on the existing aggregate. The
disks specifiedare not permitted to span disk pools. This behavior can be overridden with the -f
option. The -f option, incombination with -d, can also be used to force using disks that have a
rotational speed that does not matchthat of the majority of existing disks in the aggregate.
If disks are not specified explicitly, then disks are automatically selected to match those in the
aggregate’sexisting plex.
The -v option can be used to join victim_aggrname back into aggrname to form a mirrored
aggregate. Theresult is a mirrored aggregate named aggrname which is otherwise identical to
aggrname before the operation.
Victim_aggrname is effectively destroyed. Victim_aggrname must have been previously mirrored
with
aggrname, and then separated via the aggr split command. Victim_aggrname must be offline.
Combined withthe -v option, the -f option can be used to join aggrname and victim_aggrname
without prompting the user.
The -n option can be used to display the command that the system will execute without actually
making anychanges. This is useful for displaying the automatically selected disks, for example.