Storage server : Attachments.expert® allows you to upload and store attachments on your personal server rather than on the salesforce server. So with this application user can set up security as per requirements and important or confidential documents need never leave your secure network.The highest level of SSL based encryption available in the market can be used for your files since Attachments.expert® resides in your own controlled environment.
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Check File Integrity : File Integrity is maintained by calculating MD and checksum of a file. This ensures that there is no serious impact on the attachment been uploaded. The calculation of checksum and MD requires some time depending on the size of the attachment,CPU performance, and RAM memory.