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Synology DS1821+ DiskStation with 32GB RAM and 32TB (8 x 4TB) of Seagate Ironwolf PRO NAS Drives Fully Assembled and Tested By CustomTechSales - Newegg.com
Amazon.com: FreeNAS Mini (16TB) 4 Bay Compact NAS Storage with ZFS. 8-Core 2.4GHz Processor, 16GB RAM : Electronics
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Arch Memory AM-D4ECSO-2666-16G 16 GB DDR4-2666 PC4-21300 260-Pin ECC So-dimm RAM for Synology NAS Systems DS2419+ at Amazon.com
Amazon.com: QNAP TS-1685-D1531-16G-US 12 (+4) Bay High-Capacity iSCSI NAS, Intel Xeon 6-core 2.2GHz, 16GB RAM, SATA6G, 4 x 1GbE, 2 x 10GbE (Base-T), 40GbE-Ready : Electronics
Amazon.com: Synology DiskStation DS620slim SAN/NAS Storage System : Electronics