The Dell MG04SCA40EN is a 4TB 7.2K RPM SAS hard drive designed for enterprise storage solutions. It features a 12Gb/s data transfer rate and a 3.5" large form factor (LFF) for efficient data handling. This hot-plug hard drive, identified by part numbers 00F9W8 and 0F9W8, ensures easy installation and replacement without server downtime, making it ideal for maintaining high availability in critical systems.