Synology DiskStation DS620slim iSCSI NAS Server with Intel Celeron Up to 2.5GHz CPU, 6GB Memory, 4TB (2 x 2TB) SSD Storage, DSM Operating System

Synology DiskStation DS620slim, made for a variety of server roles such as backup, file storage, email servers, and domain controllers!
Form Factor: NAS Tower Server
Internal File System Format: EXT4, Btrfs
Ports: 2 x RJ-45 1GbE LAN Port (with Link Aggregation / Failover support); 2 x USB 3.0 Port; Btrf File System for Advanced LUN iSCSI Service
Processor: Intel Celeron J3355 Dual-Core 2.0GHz 2MB CPU, Up To 2.5GHz Turbo
Memory: 6GB DDR3L Synology SDRAM Memory
Storage: 4TB (2 x 2TB) SATA III Solid State Drives for Ultra Fast Storage
Power: Single Power Supply
Operating System: Synology DSM Software
Operating System Features:
File Access, Sharing and Sync
Data Backup with Deduplication and Compression Capabilities
Synology Drive, MailPlus, Chat, Calendar, Office, and Note Station
Multimedia Management
iSCSI Target Role Synology Directory Domain Controller Role
Centralized Management System for Managing Multiple Synology NAS Devices
NAS chassis comes in a sealed box
Hard drives and memory upgrades included separately NOT installed, installation required