Is the 40TB HDD storage pre-installed, or can I choose different HDDs according to my needs?

The hard drives and memory upgrades are included separately and not installed, so you can choose different HDDs according to your needs.

Questions & Answers: Synology DiskStation DS420+ NAS Server with Celeron 2.0GHz CPU, 6GB Memory, 40TB HDD Storage, 1TB M.2 NVMe SSD, 2 x 1GbE LAN Ports, DSM Operating System

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Synology DiskStation DS420+ NAS Server with Celeron 2.0GHz CPU, 6GB Memory, 40TB HDD Storage, 1TB M.2 NVMe SSD, 2 x 1GbE LAN Ports, DSM Operating System

Synology DiskStation DS420+, made for a variety of server roles, such as iSCSI targets backup, large file storage, email servers, and domain controllers. Powerful, high-capacity, scalable storage that fits in any environment. A powerhouse capable of fitting into small and medium business environments with intensive, multi-user workloads.
Celeron J4025 Dual-Core 2.0GHz CPU, Up to 2.9GHz Burst; 6GB DDR4 non-ECC Memory; M.2 Storage: 1TB (2 x 500GB) M.2 Solid State Drives for Ultra-Fast Storage; 40TB (4 x 10TB) SATA 3.5" HDDs for High-Capacity Storage; 2 x RJ-45 1GbE LAN Ports (with Link Aggregation / Failover support); 2 x USB 3.2 Ports
Features: Security Advisor, AES 256-bit Encryption, 2 Factor Authentication, File Server/Management, 4K Multimedia Server role, Desktop Backup, Hyper Backup, Snapshot Replication, Synology Drive, and many more
Synology NAS chassis comes in a sealed box.
Hard drives and memory upgrades included separately, NOT installed, installation required.

$2,399^.00 –