DiskStation DS1823xs+ Features: Powerful Performance Over 3,100/2,600 MB/s sequential read/write throughput and over 173,100/80,800 random read/write IOPS support heavier applications On-Demand Expansion Attach up to 2 plug-and-play Synology DX517 Expansion Units for up to 18 drive bays and 324 TB or raw storage Comprehensive Backups Protect your IT infrastructure with license-free solutions for backup, replication, and recovery Availability Safeguards Maximize uptime with hot-swappable drives, online volume expansion, and Synology High Availability clustering Long-Term Support Backed by Synology’s 5-year limited warranty Specifications: CPU AMD Ryzen V1780B Memory 8 GB DDR4 ECC SODIMM (expandable up to 32 GB) Compatible drive types 8 x 3.5" Synology SATA HDD or 2.5" Synology SATA SSD 2 x Synology M.2 2280 NVMe SSD Hot swappable drives Yes External ports 3 x USB 3.2 Gen 1 ports 2 x Expansion ports (eSATA) Form factor Desktop Size (HxWxD) 166 x 343 x 243 mm Weight 6.2 kg LAN ports 1 x 1GbE RJ-45 (out-of-band management and data transfer) 2 x 1GbE RJ-45 (data transfer) 1 x 10GbE RJ-45 Wake on LAN/WAN Yes (only on 1GbE ports) PCIe expansion 1 x 8 width slot, Gen 3.0 x4 lanes Supports network interface cards Scheduled power on/off Yes System fans 2 x (120 x 120 x 25 mm) AC input power voltage 100 V to 240 V AC Power frequency 50/60 Hz, single phase Operating environment Temperature: 0°C to 40°C (32°F to 104°F) Relative humidity: 8% to 80% RH Storage environment Temperature: -20°C to 60°C (-5°F to 140°F) Relative humidity: 5% to 95% RH Maximum operating altitude 5,000 m (16,400 ft) Networking protocols SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, and VPN (PPTP, OpenVPN™, L2TP) File systems Internal: Btrfs, ext4 External: Btrfs, ext4, ext3, FAT32, NTFS, HFS+, exFAT Supported RAID types Synology RAID F1, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10 Storage management Max. single volume size: 108 TB/200 TB Max. number of system snapshots: 65,536 Max. number of internal volumes: 256 SSD cache Read/write cache support M.2 NVMe and 2.5" SATA SSD support Out-of-band (OOB) management Power on, shutdown, force shutdown, force reboot, reset system, view DSM logs, monitor DSM logs, view OOB logs File sharing capabilities Max. number of local user accounts: 16,000 Max. number of local groups: 512 Max. number of shared folders: 512 Max. number of concurrent SMB/NFS/AFP/FTP connections: 2,000 (8,000 with RAM expansion) Privileges Windows® Access Control List (ACL) and application privileges Directory services Connects with Windows® AD/LDAP servers enabling domain users to login via SMB/NFS/AFP/FTP/File Station using their existing credentials Virtualization VMware® vSphere™, Microsoft® Hyper-V®, Citrix® XenServer™, OpenStack, and Kubernetes Security Firewall, shared folder encryption, SMB encryption, FTP over SSL/TLS, SFTP, rsync over SSH, login auto block, Let's Encrypt support, and HTTPS (customizable cipher suite) Supported browsers Google Chrome®, Firefox®, Microsoft Edge®, Safari® 13 and later, and Safari (iOS 13.0 and later) on iPad, Chrome (Android™ 11.0 and later) on tablets