C# BulkWriteAsync, Transactions and Results

Working with Data Drivers
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Hello all,
I am relatively new to working with mongodb. Currently I am getting a little more familiar with the API and especially with C# drivers. I have a few understanding questions around bulk updates. As the C# driver offers a BulkWriteAsync method, I could read a lot about it in the mongo documentation. As I understand, it is possible to configure the BulkWrite not to stop in case of an error at any step. This can be done by use the unordered setting. What I did not found is, what happens to the data. Does the database do a rollback in case of an error? Or do I have to use a surrounding by myself? In case of an error: can I get details of which step was not successful? Think of a bulk with updates on 100 documents. Can I find out, which updates were not successfull? As the BulkWriteResult offers very little information, I am not sure if this operation is realy a good one for me.

thanks in advance

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The result will contain any documents that were not written. There is an example here.

To ensure you don’t lose writes you should use a properly configured replica set. . The easiest way to ensure you have a properly configured replica set and the associated write Concern is to use an Atlas cluster.