Hi Srimurgan,
In cDOT, I was able to get information about instances.
[rle@pale]{/u/rle} ontapi rtp-cse-cl01 myPass perf-object-instance-list-info-iter objectname nfsv3
<results status="passed">
<attributes-list>
<instance-info>
<name>PrivateCloud</name>
<uuid>7</uuid>
</instance-info>
<instance-info>
<name>dtmgmt</name>
<uuid>15</uuid>
</instance-info>
<instance-info>
<name>vs-cse-01</name>
<uuid>4</uuid>
</instance-info>
<instance-info>
<name>vs-orng-01</name>
<uuid>6</uuid>
</instance-info>
<instance-info>
<name>vs1</name>
<uuid>3</uuid>
</instance-info>
<instance-info>
<name>wfatest</name>
<uuid>13</uuid>
</instance-info>
</attributes-list>
<num-records>6</num-records>
</results>
It looks like each instance is a vserver. There are other counter objects like nfsv3:node, nfsv3_cpu, etc. My blog might be helpful.
Regards,
- Rick -