Synology DiskStation DS1821+ (8-bay NAS) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/synology-ds1821-plus/  (sheet CC BY 4.0)
Basis: Manufacturer specifications (Synology)
Catalog version: 2026-10-20

Overall (mm): length 243, width 343, height 166
- Synology DiskStation DS1821+ (8-bay NAS) measures 243 × 343 × 166 mm (9.57 × 13.5 × 6.54 in) according to Synology; NAS enclosure, depth × width × height as listed by Synology (Synology prints H × W × D).
- No CAD file: the maker publishes only overall sizes, and a plain box or cylinder is not useful design geometry. The table is the published data; parts with real geometry have their own pages.

dimension  value
Depth  243 mm (9.57 in)
Width  343 mm (13.5 in)
Height  166 mm (6.54 in)
Drive bays  8 × 3.5" or 2.5" SATA
System fan  2 × 120 × 120 × 25 mm
Weight  6.0 kg

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Synology: DS1821+ Data Sheet — web — Publisher's page; dimensions are facts — https://global.download.synology.com/download/Document/Hardware/DataSheet/DiskStation/21-year/DS1821+/enu/Synology_DS1821+_Data_Sheet_enu.pdf

No true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.
API: https://xemstudio.com/api/geometry?object=synology-ds1821-plus