Yes, they should own or purchase new BigObjects. If they want to archive data up to 2 GB, then the available 1 million records storage is sufficient. They do not have to buy any extra scrum of BigObjects. But, if they want to archive data out of Salesforce, then we do have solutions for that as well.
Big object data backup can be setup using any third party ETL tool as it supports all the APIs same as custom object ( ex: data loader )
As you know, BigObject does not support role hierarchy and sharing rules. So DataArchiva retains share records of each archived records in big object to evaluate who can see the record. Moreover, Archived data view/page uses describeLayout metadata API to render the page dynamically.
Yes. BO is highly scalable and reliable.
Yes. Your data will be highly secured as BO is a native Salesforce storage system.
Yes you can. DataArchiva offers a connector called “DataConnectiva” using which you can choose any cloud/on-premise storage system to store your archived data. For more information, please get in touch with us.
This being a big data, large volume of data can be stored in terms of terabytes. There is no official mention of size limit for Big Objects from Salesforce.
By default Salesforce provides free storage upto 1 million records for Big Objects and beyond this is chargable. The cost of Big Objects storage is way cheaper than the regular Salesforce Objects.