Synology

Synology RackStation RS3621RPXS. Supported storage drive types: HDD & SSD, Storage drive interface: Serial ATA II, Serial ATA III, Storage drive sizes supported: 2.5,3.5". Processor family: Intel® Xeon®, Processor manufacturer: Intel, Processor model: D-1531. Internal memory: 8 GB, Internal memory type: DDR4, Maximum RAM supported: 64 GB. Chassis type: Rack (2U), Cooling type: Active, Product color: Black. Type: Storage server, Device class: Small & Medium Business, Noise level: 50.2 dB

Synology RackStation RS2821RP+. Supported storage drive types: HDD & SSD, Supported storage drive interfaces: Serial ATA, Serial ATA II, Serial ATA III, Storage drive sizes supported: 2.5,3.5". Processor family: AMD Ryzen, Processor manufacturer: AMD, Processor model: V1500B. Internal memory: 4 GB, Internal memory type: DDR4, Maximum RAM supported: 32 GB. Ethernet LAN data rates: 1000 Mbit/s, Supported network protocols: SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV. Chassis type: Rack (3U), Cooling type: Active, Product color: Black

Synology RXD1219sas. Device class: Small & Medium Business. Number of storage drives supported: 12, Supported storage drive types: HDD & SSD, Supported storage drive interfaces: SAS, SAS-2, SAS-3, Storage drive sizes supported: 2.5,3.5". Width: 19" (482 mm), Depth: 28.5" (724 mm), Height: 3.46" (88 mm), Weight: 40.1 lbs (18.2 kg). Product color: Black, Gray