Does the Synology DiskStation DS124 come with pre-installed hard drives, or do I need to purchase them separately?

The Synology DiskStation DS124 comes with a 12TB HDD included, but it is not installed. Installation is required.

Questions & Answers: Synology DiskStation DS124 NAS Server with RTD1619B 4-Core 1.7GHz CPU, 1GB Memory, 12TB HDD Storage, 1 x 1GbE LAN Port, DSM Operating System

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Synology DiskStation DS124 NAS Server with RTD1619B 4-Core 1.7GHz CPU, 1GB Memory, 12TB HDD Storage, 1 x 1GbE LAN Port, DSM Operating System

RTD1619B 4-Core 1.7GHz CPU; 1GB DDR4 non-ECC Memory; 12TB (1 x 12TB) 6Gb/s SATA 3.5-inch HDDs for High-Capacity Storage
Efficient Operation: With low energy consumption at just 10.7 W during operation, the DS124 offers eco-friendly and energy-efficient performance
Streamlined Data Management: Boost productivity with quick data import and sync capabilities across multiple devices, making it easier to organize, back up, and share files
Comprehensive Data Protection: Equipped with the robust Btrfs file system and snapshot technology, the DS124 ensures data integrity through self-healing and allows rollback options for accidental modifications or data loss
Hard drives and memory upgrades included separately NOT installed, installation required