Certain advanced features require Virtual Machine Manager Pro. One Virtual DSM license is included. Additional Virtual DSM instances require the purchase of Virtual DSM Licenses.

Volumes up to 108 TB are supported with the default installed memory. Volumes up to 200 TB can be created if the memory is upgraded to 32 GB. Learn more about maximum volume sizes.

Add 10/25GbE connectivity with optional add-in cards.8 Create all-flash storage volumes with SAS SSD for lightening-fast I/O, or boost IOPS and cut down latency on HDD volumes by creating SAS SSD read/write cache volumes.9

View, edit, and share data through desktop, mobile, and web-based applications. Enable user access to shared folders over SMB or NFS and leverage Microsoft AD or LDAP integration for efficient user access and permissions management. Learn more

Manage, protect, and share data with versatile business solutions. Empower team collaboration, sandbox applications, and provide VM storage on a unified platform.

The SA3400D is backed by Synology's 5-year limited warranty,10 including technical support and hardware replacement services to maximize your return on investment and ensure continuous, high-quality performance. Learn more

Five MailPlus email accounts are included. Additional email accounts can be added with the purchase of Synology MailPlus License Packs.  Learn more

Back up shared folders, LUNs, applications, and configurations from your Synology server onto a secondary server, an external device, or C2 Storage3 via Hyper Backup. Schedule backup tasks, keep the versions you need with flexible retention policies, and reduce backup sizes with built-in data deduplication. Or minimize lost data with Snapshot Replication, creating point-in-time snapshots at intervals as short as 5 minutes.

The SA3400D provides efficient storage for virtualized environments, with full certification for VMware® vSphere™, Citrix® XenServer™, and OpenStack. Synology Storage Console provides direct management from VMware® or Windows platforms, while VMware VAAI and Microsoft ODX support help offload and speed up data transfer operations. Learn more

Thirty-minute recitals are performed on the Charles Baird Carillon at noon every weekday that classes are in session, followed by visitor Q&A with the carillonist. The bell chamber may be accessed via a combination of elevator and stairs. Take the elevator to the highest floor possible (floor 8), and then climb two flights of stairs (39 steps) to the bell chamber (floor 10). Earplugs are available from the carillonist upon request. Be prepared to walk on ice and snow in the bell chamber during winter. Built in 1936, the Charles Baird Carillon is not ADA accessible. Visitors with mobility concerns are invited to visit the Lurie Carillon: https://smtd.umich.edu/facilities/ann-and-robert-h-lurie-carillon/

The SA3400D is engineered to provide outstanding performance in both NAS and SAN storage roles. Its throughput and random I/O performance support efficient SMB and NFS file serving as well as a range of iSCSI and Fibre Channel block storage applications.

Keep file sharing services, block storage, backups, and other office applications online with automatic minute-level failover. Defend against operational disruptions with two independent and hot-swappable controllers operating in an active-passive configuration.

Students Swenny Xue and Alex Gedeon perform on the Charles Baird Carillon, an instrument of 53 bronze bells located inside the Burton Memorial Tower. The largest bell, which strikes the hour, weighs 12 tons, while the smallest bell, 4½ octaves above, weighs just 15 pounds.

Improve collaboration in the workplace with Synology productivity solutions. Create, edit, and share documents across teams in real time with Synology Office. Host an on-premises mail server with MailPlus,4 providing web-based email access while retaining full data ownership. And stay connected via secure one-on-one chats, public channels, encrypted private channels, and group conversations in Synology Chat. Learn more

Instantly restore backed up physical servers and VMs, or test new applications in a contained environment with Synology Virtual Machine Manager5 — a hypervisor for Windows®, Linux®, and Virtual DSM with built-in snapshots and version rollback functionality. Or host Docker containers on Synology Container Manager and benefit from easy management, automatic update notifications, and Compose support. Learn more

Sync or distribute data between servers with Synology Drive ShareSync to provide teams around the world with the latest work files. Or create a global file system spanning C2 Storage cloud storage and multiple Synology systems with Hybrid Share.3 Learn more

Performance figures are obtained through internal testing by Synology. Actual performance may vary depending on the testing environment, usage, and configuration. See performance charts for more information.

The warranty period starts from the date of purchase as stated on your purchase receipt. Learn more about our limited product warranty policy.

C2 Storage for Hyper Backup and Hybrid Share requires purchase of an annual or monthly subscription. A free trial is available for each newly registered device.

Flexibly scale storage capacity, optimize I/O performance, and meet different network needs with a range of expansion options.6

Scale server capacity up to 576 TB7 when your data storage needs increase by adding two 12-bay RXD1219sas expansion units.

Consolidate and automate backup tasks for PCs, servers, VMs, SaaS applications, and more with Active Backup Suite. Manage all backup tasks from a central console and quickly restore specific files, entire devices, virtual services, and employee SaaS accounts to keep your business running. Learn more

SSD cache volumes store frequently accessed data from conventional HDD volumes to reduce I/O latency and improve system performance. To find out which SAS SSDs are supported, please check our compatibility list.