Synology 16 bay RackStation RS4021xs+ (Diskless)

16-Bay Usage Ultra high prerformance for large number of users Diskless System Intel Xeon D-1541 8-core (16-thread) 2.1GHz Processor 2 x 10Gb E + 4 x 1Gb E 2 x USB 3.2 Gen 1 Only drives listed on the compatibility list can be used to create storage pools Only Synology SAT5200 2.5' or Synology SNV3500 series SSDs (sold separately) can be used to create SSD caches