High Scalability SA6400 Features: On-Demand Expansion Up to 1.944 PB of storage with up to 8 Synology RX1223RP Expansion Units Accelerated Performance Over 6,500/4,000 MB/s sequential read/write throughput for efficient file transfer operations even in data-intensive scenarios Fast Connectivity Built-in 10GbE RJ-45 ports for easy integration into any environment and support for 25/40GbE or Fibre Channel upgrades Uptime Protection Option to combine two identical devices into a Synology High Availability cluster for maximum service uptime and minute-level failover Long-Term Support Backed by Synology’s 5-year limited warranty Specifications: CPU AMD EPYC™ 7272 12-core (24-thread) 2.9 GHz, max boost clock up to 3.2 GHz Hardware encryption AES-NI Memory 32 GB DDR4 ECC RDIMM (expandable up to 1,024 GB) Compatible drive types 12 x 2.5" or 3.5" Synology SATA HDD/SSD Hot swappable drives Yes External ports 2 x USB 3.2 Gen 1 ports 8 x Expansion ports (Mini-SAS HD) Form factor Rackmount 2U Size (HxWxD) 88 x 430.5 x 692 mm 88 x 482 x 724 mm (with server handles) Weight 16.5 kg LAN ports 1 x 1GbE RJ-45 (out-of-band management and data transfer) 4 x 1GbE RJ-45 (data transfer) 2 x 10GbE RJ-45 Wake on LAN/WAN Yes (only on 1GbE ports) PCIe expansion 2 x 8 width slot, Gen 3.0 x8 lanes Supports network interface cards Scheduled power on/off Yes System fans 4 x (80 x 80 x 38 mm) AC input power voltage 100 V to 240 V AC Power frequency 50/60 Hz, single phase Operating environment Temperature: 0°C to 35°C (32°F to 95°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: 1 PB/200 TB Max. number of system snapshots: 65,535 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 log 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: 8,000 (10,000 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