including 4x 1 TB = 4 TB hard disks - only brand manufacturers are used! For organizational reasons we cannot tell you the manufacturer and exact type! Flexible file sharing and storage solution for home users and small businesses Synology DS923+ is a powerful 4-bay NAS solution that can be customized and expanded as needed, with support for up to nine drives, faster networking, and NVMe SSDs for SSD cache or additional storage pools. With Synology DiskStation Manager (DSM), it is a flexible all-in-one solution for data sharing, syncing, backup, and video surveillance. https://elecena.pl/product/23612248/nas-server-diskstation-ds923-4-tb-hdd 2023-06-07 https://elecena.pl/product/23612248/nas-server-diskstation-ds923-4-tb-hdd 2025-04-07