To configure multiple storage server settings Salesforce Administrators can either set the default Storage Profile to the required storage server or create a new profile for each of the servers to be used
Default Storage Profile:
Salesforce Administrators can set up a default storage server for Attachments Expert as per their requirements through the following guidelines.Default Storage Profile will be provided to save the default server settings. All the files uploaded using Attachments Expert will by default get stored under Default storage unless it is changed while configuring Attachments Expert. This storage profile will be created automatically during installation, the Standard Administrators only need to configure it, as per their requirements. Standard Administrators can make any server as Default Storage. Eg:- If a user want to make Amazon S3 as the Default Storage then the user need to mention Amazon S3 as the Storage Type and its credential in the Secret Key in Default Storage Setting, then AmazonS3 will be configured as a Default Storage
Setup->Install Packages-> Configure->Default