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RS3621RPXS
SYNOLOGY 12BAY RACKSTATION RS3621RPXS DISKLESS
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RS3621RPXS is an enterprise-grade SAN storage system featuring a 24-bay drive enclosure that supports a mixed array of drive types including SATA HDD, SAS HDD, SATA SSD, and NVMe SSD. It delivers a total storage capacity of 256 TB with comprehensive RAID support (RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID 50, RAID 60, and JBOD). The system is powered by an Intel Xeon processor with 8 cores and comes with 16 GB of pre-installed RAM, expandable up to 64 GB using ECC DDR4 memory. Its connectivity includes USB 3.2 and 10GbE network ports, ensuring high-speed data transfer and robust network integration.
This storage solution offers expansion support for scalable deployments and is built with redundant fan cooling and a redundant power supply rated at 750W, ensuring optimal uptime in demanding environments. Ideal for enterprise data centers, virtualization, media servers, and SMB backup applications, the RS3621RPXS is designed to meet the rigorous performance and reliability requirements of modern mission-critical storage infrastructures.
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| RS3621RPXS |  DS923+ |  DS420J |  RS2418RP+ |  UC3200 | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | SAN | NAS | NAS | NAS | SAN |
| Form Factor | Rackmount | Desktop | Desktop | Rackmount | Rackmount |
| Bay Count | 24-bay | 4-bay | 4-bay | 24-bay | 12-bay |
| Supported Drive Types | Mixed | Mixed | SATA HDD / SATA SSD | Mixed | Mixed |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Max Supported Capacity | 256 TB | 64 TB | 64 TB | 192 TB | 1 PB |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 10 / JBOD | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 |
| CPU Type | Intel Xeon | AMD Ryzen | Realtek | Intel Xeon | Intel Xeon |
| CPU Cores | 8 | 4 | 4 | 4 | 8 |
| Installed RAM | 16 GB | 4 GB | 1 GB | 8 GB | 16 GB |
| Max RAM Capacity | 64 GB | 32 GB | 1 GB | 128 GB | 64 GB |
| RAM Type | ECC DDR4 | ECC DDR4 | DDR4 | ECC DDR4 | ECC DDR4 |
| Network Ports | 10GbE | 2.5GbE | 1GbE | 10GbE | 10GbE |
| LAN Ports | 2 | 2 | 1 | 2 | 4 |
| USB Ports | USB 3.2 | USB 3.2 | USB 3.0 | USB 3.0 | USB 3.2 |
| Expansion Support | Yes | Yes | No | Yes | Yes |
| Cooling | Redundant Fan | Active | Active | Active | Active |
| Power Supply | Redundant | Single | Single | Redundant | Redundant |
| Power Supply Wattage | 750W | 150W | N/A | 750W | 750W |
| Operating System | QTS | QTS | DSM | QTS | Custom OS |
| Snapshot Support | Yes | Yes | No | Yes | Yes |
| Cloud Sync Support | Yes | Yes | Yes | Yes | Yes |
| Virtualization Ready | Yes | Yes | No | Yes | Yes |
| iSCSI Support | Yes | Yes | Yes | Yes | Yes |
| Surveillance Support | Yes | Yes | Yes | Yes | No |
| Use Case | Enterprise Data Center | SMB | Home Backup | Enterprise Data Center | Enterprise Data Center |
| Product Name | QNAP Enterprise Storage Server RS3621RPXS | QNAP DS923+ | Synology DiskStation DS420J | QNAP TS-RS2418RP+ | UC3200 Enterprise Storage System |
| Height | 3.5 inches | 6.61 inches | 9.13 inches | 4.4 inches | 3.5 inches |
| Width | 19 inches | 8.74 inches | 4.17 inches | 17.3 inches | 17.5 inches |
| Depth | 29 inches | 9.06 inches | 6.54 inches | 28.9 inches | 28 inches |
| Weight | 70 lbs | 6.5 lbs | 4.8 lbs | 66 lbs | 45 lbs |
Reliable 12-bay RackStation with redundant power. Provides high-availability storage for our critical professional applications.
Exceptional throughput and professional build. The redundant power ensures our business-critical data stays online always.
Superior reliability for enterprise networks. Handles our intensive file sharing and backups with absolute system stability.
Robust performance and great scalability. Perfect for businesses requiring a high-availability and powerful storage solution.
Top-tier build quality and consistent uptime. It effectively manages our high-traffic business network with ease.
Outstanding 12-bay capacity with redundancy. A trustworthy investment for maintaining corporate data integrity and accessibility.
Reliable 12-bay storage with critical power redundancy. This unit provides the high-availability and enterprise performance our business demands for 24/7 uptime.
Exceptional throughput and rock-solid build. The redundant power supplies offer essential peace of mind for our mission-critical data storage and networking.
Superior reliability for corporate environments. It effectively handles our high-volume file sharing and backups with total system stability and impressive speed.
Robust and scalable 12-bay RackStation. It offers the professional performance and high availability required to support our large office network infrastructure.
Outstanding uptime and high-speed data access. This unit is a trustworthy component for maintaining our data center integrity and accessibility.
The Synology RS3621RPxs is a 12-bay rackmount NAS designed for SMB and enterprise environments, offering high-performance data management, scalability, and advanced data protection without drives included.
The RS3621RPxs supports up to 12 3.5" or 2.5" SATA drives natively, delivering a maximum raw capacity of 192 TB (with 16 TB drives) and expandable to 336 TB with two DX517 expansion units.
The RS3621RPxs is compatible with Synology HAT5300/HAT5300-8T, SATA 6 Gb/s HDDs, and SSDs for caching or storage acceleration; refer to Synology’s compatibility list for validated models.
No, the RS3621RPxs is sold diskless, giving you the flexibility to choose and install SATA HDDs or SSDs based on your performance and capacity requirements.
The RS3621RPxs is powered by an AMD Ryzen V1500B quad-core 2.2 GHz CPU with 4 GB DDR4 ECC SODIMM memory, upgradeable to 32 GB for compute-intensive workloads.
Yes, the RS3621RPxs has two DDR4 ECC SODIMM slots, supporting up to 32 GB (2×16 GB) DDR4 ECC RAM to enhance multitasking and virtualization performance.
The RS3621RPxs supports RAID 0, 1, 5, 6, 10, Synology Hybrid RAID (SHR) and SHR-2 for flexible trade-offs between capacity, redundancy, and performance.
The RS3621RPxs includes four 1 GbE LAN ports with failover and link aggregation support; optional dual 10 GbE and 25 GbE network cards can be installed for higher throughput.
Yes, the RS3621RPxs supports SSD caching using internal drive bays or optional M.2 NVMe PCIe slots (via an M2D20 adapter) to boost IOPS for random workloads.
Yes, the RS3621RPxs includes two hot-swappable, redundant 250 W power supplies to ensure continuous operation in the event of a PSU failure.
The RS3621RPxs supports Btrfs and EXT4 file systems, offering data snapshots, self-healing, block-level data integrity checks, and advanced replication features.
The RS3621RPxs is certified for VMware vSphere, Microsoft Hyper-V, Citrix XenServer, and supports Docker and LXC containers through Synology Virtual Machine Manager and Container Manager.
The RS3621RPxs offers Snapshot Replication, Active Backup for Business, Hyper Backup, and third-party integration (Veeam, Azure, AWS) for comprehensive backup, replication, and failover.
Yes, the RS3621RPxs supports Cloud Sync to synchronize or back up data with major public cloud services such as Amazon S3, Google Drive, Dropbox, and Azure Blob Storage.
The RS3621RPxs includes AES-NI hardware encryption, firewall, auto block, 2-step verification, and Security Advisor for proactive protection against unauthorized access and vulnerabilities.
Synology provides a 5-year limited warranty for the RS3621RPxs, with optional extended coverage and premium support services available through authorized partners.
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