NAS Synology RackStation RS2821RP+

Synology RackStation RS2821RP+ is a 3U, 16-bay rack-mounted NAS designed for businesses that require scalable, high-availability storage. Scalable to 28 drives with expansion units, the RS2821RP+ supports HDD and SSD media and runs DiskStation Manager for centralized storage management. It delivers high sequential throughput and strong random IOPS performance suitable for backup, virtualization, and collaborative services, and can be expanded with SSD cache and 10/25GbE networking options.

Advantages

The RS2821RP+ provides high performance with up to 2,220 MB/s sequential read and over 105K 4K random read IOPS, redundant power supplies to reduce the impact of single-channel power failures, ECC memory to protect against data corruption, and the Btrfs file system for snapshots and improved data integrity. It supports Synology High Availability for automated failover and offers options for SSD caching and faster network interfaces.

Suitable for

• Centralized backup and restoration for SMB and enterprise environments
• Virtualization storage for VMware, Hyper-V, Citrix, and OpenStack
• File sharing and collaboration for remote and distributed teams
• High-throughput applications requiring 10/25GbE connectivity

Key specifications

• Form factor: 3U rack-mounted chassis, 16 drive bays (scalable to 28)
• Supported drives: HDD and SSD; no drives preinstalled
• Network: Supports 10/25GbE NICs (optional); Link Aggregation supported
• Performance: Up to 2,220 MB/s sequential read; 105K+ random read IOPS
• Memory & integrity: ECC memory supported; Btrfs file system
• Redundancy: Redundant power supply support; Synology High Availability
• Weight & color: 17.1 kg; black

How to use

Install the RS2821RP+ in a standard 19-inch rack and populate drive bays with compatible HDDs or SSDs. Connect to your network and complete initial setup using Synology DiskStation Manager to configure storage pools, RAID arrays, and user access. Optionally install NVMe or SATA SSDs for cache acceleration and add 10/25GbE NICs to increase network throughput. Enable Synology High Availability by pairing two identical units for automatic failover.

Recommendations

For best results in business environments, use RAID configurations appropriate for your redundancy and performance needs, enable ECC memory, schedule regular snapshots and backups using Btrfs features, and consider 10/25GbE networking plus SSD cache when supporting high-concurrency or low-latency applications.