What is the expected read/write performance of the RS1221+ with the included 32GB RAM and 32TB storage?

The RS1221+ can achieve up to 2,315 MB/s read and 1,147 MB/s write performance.

What are the dimensions and weight of the Synology RS1221+ RackStation, and will it fit in a standard server rack?

The dimensions of the Synology RS1221+ RackStation are 3.46" x 18.98" x 12.07" and it weighs 15.21 lbs.

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Synology RS1221+ RackStation with 32GB RAM and 32TB (8 x 4TB) of Synology Plus NAS Drives Fully Assembled and Tested By CustomTechSales