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DiskStation DS723+
Compact and capable storage for home and small business


Simply faster
DS723+ can handle more demanding application workloads and a greater number of concurrent users compared to prior-generation systems. Experience faster file indexing in Synology Drive, photo organization in Photos, and concurrent file transfers


The performance you need
Reduce transfer times with the DS723+, designed to accelerate your workloads. Easily add faster networking and NVMe drives to further boost performance.


Versatile and flexible storage
Make the most of high-performance networking and file access without taking up unnecessary space. DS723+ comes equipped with 2 bays and can scale up to 7 bays with the DX517 expansion unit as your data needs grow.


Store, share, and protect
Manage all your documents, photos, and other files, back up applications and devices, and protect your assets with professional video surveillance.


Private cloud storage
Access files from all your devices and protect them with smart versioning. Manage, share, and sync your data across locations.

Securing your business assets The 16-bay RS4021xs+ provides solid data security and lightening-fast performance with over 234K 4K random read IOPS and 6,258 MB/s sequential read throughput1. Together with its 8-core processor, ECC memory, advanced snapshot technology, and built-in 10GbE connectivity, the RS4021xs+ can support large multi-user environments while handling data-intensive workloads. Engineered for service continuity The RS4021xs+ ensures mission-critical data is always available, enabling businesses to deliver the best results, even in the face of disaster. Redundant power Dual PSUs provide protection against a PSU failure or accidental cord removal while hot-swappable fans can be replaced without powering down the system. Maximize service availability Synology High Availability (SHA) pairs two identical units together creating an active-passive cluster with minute-level failover. Next-generation file system Btrfs prevents data corruption and reduces maintenance overheads with advanced storage technologies and optimized snapshots Customize to your business The RS4021xs+ includes two PCIe slots for performance, networking, and storage upgrades enabling it to adapt to any business environment2. Double bandwidth Upgrade network bandwidth in minutes by 2x or more with Synology’s range of 10GbE NICs. SSD cache3 Boost read/write IOPS by up to 16 times by enabling SSD cache with our Synology M.2 NVMe adapter cards and SNV3500 SSDs, or by installing one or more 2.5” SAT5200 SSDs. Storage expansion Quickly and easily scale up to 40 drives with two RX1217(RP) expansion units. Hyper Backup A comprehensive backup and recovery solution for securing data stored on Synology servers. Backup data locally, to another Synology device, rsync server, or cloud-based storage such as Google Drive, Dropbox, S3-compatible destinations, and Synology C2. Deduplication4, integrity checks, and incremental transfer technology reduce bandwidth and storage used. Snapshot Replication Easily schedule flexible point-in-time backups of shared folders and iSCSI LUNs with an RPO as low as 5 minutes and recovery in seconds. Set up replication and failover to other Synology storage systems for fast RTOs and minimal service disruption. Storage for virtualization Synology iSCSI storage supports mainstream virtualization solutions with an easy management interface to enhance usability. VMware vSphere 6.5 and VAAI integration helps offload storage operations. Windows Offloaded Data Transfer (ODX) speeds up data transfer. OpenStack Cinder support turns your Synology NAS into a block-based storage component. Additionally, Synology Storage Console enables even more simplified storage provisioning and management options in VMware and Windows environments All-in-one surveillance solution Synology Surveillance Station transforms the RS4021xs+ into a feature-packed Network Video Recorder solution. Support for up to 90 IP cameras5 and video analytics such as motion detection, no idle zone, foreign object detection, and anomaly detection cater to the most common surveillance scenarios. Secure and private AES-256 encryption keeps locally-stored footage secure. Access from anywhere, anytime Access recordings and live streams whenever you want using a web browser, desktop client, or the DS cam mobile app. Real-time alerts Email, SMS, or push notifications alert you when incidents occur or predefined conditions are met.

Compact and reliable The RS1221+/RS1221RP+, at only 30 to 38 centimeters deep, is built for space-sensitive deployments. Boasting over 100K 4K random read IOPS and 2,315 MB/s sequential read, the RS1221+/RS1221RP+ is equipped to handle heavy workloads in data-intensive environments. The RS1221RP+ additionally features an extra level of protection with redundant power supplies. A compact design for space efficiency The RS1221+ and its RX418 expansion units are designed to help you save space in compact deployments. At only 30 centimeters, half the length of a typical 2U unit, it fits perfectly snug onto 2-post or shallow rackmount enclosures. The RS1221RP+ with dual power supplies comes in at 38 cm, also fitting most shallow depth enclosures. - Fits into shallow rackmount enclosures - Easy-to-install on 2-post racks Built for reliability Redundant power Reduce the chance that power disruptions on a single distribution channel or PDU causes data and service availability degradation. Maximize service availability When paired with another identical unit, Synology High Availability enables automatic minute-level failover between two clustered servers in the event of a server failure to minimize service downtime. Data integrity and protection ECC memory and the Btrfs file system bring higher reliability and snapshot capabilities to help prevent data corruption and simplify data protection. High performance storage for anything Up to 2,315/1,147 MB/s sequential read and write throughput and over 100K/54K random read/write IOPS ensures ample performance for demanding workloads. With room to grow with you Easily upgrade the RS1221+/RS1221RP+ to match your usage environment, whether it’s for performance, faster networking, or higher storage capacity. SSD cache Boost read/write IOPS over HDD-only arrays by 16X or more with NVMe or SATA SSD Cache 10GbE ready Improve I/O with faster SFP+ or RJ-45 networking Storage expansion Expand to 12 drive bays with a RX418 expansion unit Data protection solutions, built-in Hyper Backup A comprehensive backup and recovery solution for added data protection. Create backup destinations locally, on another Synology device, rsync servers, or cloud-based destinations, such as Google Drive, Dropbox, S3-compatible destinations, and Synology C2 Storage, a dedicated backup destination for Synology devices. Deduplication, integrity checks, and incremental transfer technology reduce bandwidth and storage use. Snapshot Replication Easily schedule flexible point-in-time backups of shared folders and LUNs with an RPO as low as 5 minutes and recovery in seconds. Set up replication and failover to other Synology storage systems for fast RTOs and minimal service disruption. Protect your entire office with Active Backup The Active Backup suite enables administrators to easily secure their entire IT infrastructure by backing up mission-critical data to their NAS, including Windows & Linux workstations and servers, file servers, VMware and Hyper-V virtual machines, and Microsoft 365 and Google Workspace accounts. Benefit from deduplication, multiversioning to quickly jump back in time, and additional data efficiency optimizations for reduced bandwidth and storage use. Fully certified storage virtualization solutions Synology iSCSI storage fully supports mainstream virtualization solutions to enhance work efficiency with an easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations. Windows Offloaded Data Transfer (ODX) speeds up data transfer. OpenStack Cinder support turns your Synology NAS into a block-based storage component. Additionally Synology Storage Console enables even more simplified storage provisioning and management options in VMware and Windows environments. Works best with Synology drives Engineered to handle intensive 24/7 workloads, Synology drives consistently deliver top-grade performance. Powered by Synology DiskStation Manager Synology High Availability Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications. Virtual Machine Manager Run various operating systems in isolated sandboxes. Seamlessly clone, store, and migrate virtual machines. Synology Drive Instantly access your NAS files across multiple devices whenever you want, wherever you are. Central Management System Conveniently manage your fleet of Synology NAS from a centralized console. Surveillance Station Complete surveillance solution for recording, monitoring, and management. Collaboration Suite Satisfy all team collaboration needs behind the safety of your own private cloud with Synology Office, Calendar, and Chat.