so are you having 600 nodes in total and you are thinking about "concurrent usage" for NCM? If so no this won't work. you have to license ALL nodes you want to manage with NCM, there is no shortcutting.
if you have 200 Nodes in total and you want to do upgrade 200 nodes at 3 different times, then yes.
If I have 200 node license
Same time 200 node only can be upgradable if I want to upgrade more than 200 node can I schedule for another 200 node upgrade after completion of first 200 node .
No
If it's concurrent, you can't. Upgrade the 1st 200 first, then unmanaged in NCM once done. Manage in NCM the 2nd 200 devices and upgrade. Once done, unmanaged again then do the same on 3rd batch
If you are over the License Limit with your node count, the nodes will randomly „not work“ because you are violating the License agreement. The only proper way would be to delete the worked nodes, discover 200 fresh nodes, work them, delete them, discover 200 fresh, rinse repeat.
if you have 600 nodes in total, you need a proper license for it. There is no shortcutting!
while we taking backup configuration from 200 Nodes then we delete the worked 200 nodes does all the backup file also delete from the database or it will be overwrite
That's exactly my point why you need the proper licensing. They will be deleted from the database after some time. The only way to properly store them is to copy them to a file location somewhere and maintain a backup repository there.
Again, if you have 600 Nodes where you want to backup the config, you need the proper license which is NCM1000
