Can data of OpenSearch index be moved using Index State Management?

Yes, it is possible to move old data from hot storage to cold storage without moving indexes using index state management.

Index state management allows you to create policies that automate the process of moving data between different storage tiers. By defining a policy that matches the criteria for your old data, you can use index state management to automatically move that data to cold storage while keeping the index in the hot storage tier.

For example, you could create a policy that moves all data older than a certain date to cold storage. When the policy is triggered, the data will be moved to cold storage, but the index will remain in hot storage. This allows you to access the index and search for the data as usual, but the actual data will be stored in a cheaper, slower storage tier.

It's worth noting that moving data to cold storage can affect performance, so you may want to consider how frequently the data is accessed and whether it's still necessary to keep it in the index. Additionally, there may be additional costs associated with storing data in cold storage, so it's important to factor that into your decision-making process.