All file content is retrieved for the first backup using the "get" command over FTP or SFTP. Disk I/O is utilized as each file is retrieved and transferred to our servers. CPU and memory needs are minimal.
Subsequent backups are differential and do not entail transferring all content. This is achieved by utilizing the "ls – list" command and examining the metadata for each file: name, size, timestamp, file type, permissions, and last modified date. If any of these have changed, or a new file has been added, we will transfer the changed or added file to our servers. If a file has been deleted, we take note and adjust our repository accordingly. Since only changed file content is transferred, the vast majority of subsequent backups cause minimal memory, CPU, and I/O server needs.
Note: SFTP is not available for PCI Compliant Shared Accounts. Contact Host-99 support for your options to use CodeGuard with our PCI Compliant Shared Plans.
