I am new at Amazon services so I need some questions to ask... Before upgrading to a newer instance I created an AMI of the current instance. Can I delete that AMI now after successful upgrading, without damaging the isntance? Also, can I delete my snapshots, created from the running instacens volumes?
Is a AMI(Image) or snapshot being used by a working instance or is it sepearated and represents only a backup alternative?
It is a windows server instance
Thanks in advance
Can I delete that AMI now after successful upgrading, without damaging the instance?
Yes, You can.
Also, can I delete my snapshots, created from the running instance volumes?
Yes, You can.
Is a AMI(Image) or snapshot being used by a working instance or is it separated and represents only a backup alternative?
The instances are independent of the AMI/Snapshots. So no worries. You can delete AMI/Snapshot without affecting Running instances.
You can create new instances using AMI. And you can create a volume OR an AMI using a snapshot. So YES, in a way it can be treated as a backup option.