Synology DS1621xs 6 Bay Desktop NAS Enclosure Built for High-Speed Connectivity - Combine built-in 10GbE and optional high-speed NIC for over 3,100 MB/s sequential read performance Boost Performance With SSD Cache - Built-in M.2 2280 NVMe SSD slots permit cache acceleration without using storage drive bays Flexibly Expand Storage Size - Flexibly scale up to 16 drives to increase storage capacity as demand grows Collaboration and Productivity Suite - Build an on-premises, multi-user collaboration environment with fine-grained controls Protect and Restore Data in a Snap - Back up critical data and reduce your Recovery Time Objective (RTO) with Snapshot Replication Synology DiskStation DS1621xs is a high-end, high-performance NAS solution that supports every aspect of your business with powerful data management, collaboration, and networking tools topped off with well-rounded data protection mechanisms in a 6-bay desktop chassis. Built-in M.2 SSD cache slots, 10GbE connectivity, scalable storage, and Synology 5-year limited warranty make DS1621xs a future-proof choice to build on-premises cloud infrastructure. Technical Specification Synology DS1621xs 6 Bay Desktop NAS Enclosure General Device Type    NAS server Host Connectivity    Gigabit Ethernet / 10 Gigabit Ethernet Installed Devices / Modules Qty    0 (installed) / 6 (max) Width    28.2 cm Depth    24.3 cm Height    16.6 cm Weight    5.3 kg Enclosure Colour    Black Built-in Devices    Led panel Processor / Memory Processors Installed    1 x Intel Xeon D-1527 2.2 GHz Number of Cores    Quad-Core Max Supported Qty    1 Max Turbo Speed    2.7 GHz RAM    8 GB (installed) / 32 GB (supported) - DDR4 Storage Controller Type    RAID Interface Type    SATA 6Gb/s RAID Level    RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, JBOD Networking Data Link Protocol    10Mb LAN, 100Mb LAN, GigE, 10 Gigabit Myrinet Network / Transport Protocol    iSCSI Remote Management Protocol    SNMP, Telnet, HTTP, HTTPS, TFTP, SSH Network Services Compatibility    Microsoft Active Directory (AD), File Level Security (ACLs), Microsoft CIFS, Network File System (NFS), FTP, Apple File Protocol (AFP), Web-based Distributed Authoring and Versioning (WebDAV), Calendaring Extensions to WebDAV (CalDAV) Features    Hardware encryption, VPN support, wake on LAN (WOL), Syslog support, High Availability, download client, file sharing, Trivial File Transfer Protocol (TFTP) support, Access Control List (ACL) support, surveillance station, PXE support, DLNA Media Server, Apple Time Machine compatible, WebDAV server, VPN Server, anti-virus protection, Link Aggregation, failover protection, DLNA support, OpenStack compatible, SSD trim, iSCSI LUN clone/snapshot, Windows ODX, cloud station server, MailPlus server, Rsync compatible, Synology Hybrid RAID Compliant Standards    DLNA CERTIFIED Expansion / Connectivity Expansion Bays    6 (total) / 6 (free) x hot-swap - 2.5\" / 3.5\" Expansion Slots    2 (total) / 2 (free) x M.2 ¦ 1 (total) / 1 (free) x PCI Express 3.0 x8 Interfaces    3 x USB 3.0 - Type A ¦ 2 x Ethernet 1000Base-T - RJ-45 ¦ 2 x eSATA ¦ 1 x Ethernet 10Gb - RJ-45 Miscellaneous Features    Security lock slot (cable lock sold separately), wake on LAN, built-in 2 cooling fans, Citrix Ready, VMware Ready Security Slot Type    Kensington security slot Compliant Standards    VCCI, BSMI, CCC, FCC, RoHS, EAC, RCM Power Power Device    Internal power supply Voltage Required    AC 120/230 V (50/60 Hz) Power Consumption Operational    62.85 Watt Power Consumption Stand by    34.26 Watt Power Provided    250 Watt Manufacturer Warranty Service & Support    Limited warranty - 5 years Environmental Parameters Min Operating Temperature    0 °C Max Operating Temperature    40 °C Humidity Range Operating    5 - 95 Sound Emission    25.2 dBA