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Synology RackStation RS4021xs+ NAS Rack (3U) Ethernet LAN Black D-1541
SKU
RS4021XS+/256T/16X16T
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256 TB, 3U, Intel Xeon D-1541 (8x 2.1GHz), 16GB DDR4, 16x 2.5"/3.5", 2x USB 3.2 Gen1, 4x 1GbE RJ-45, 2x 10GbE RJ-45
- Intel® Xeon® D-1541 8-core 2.1 GHz
- Built-in dual-port 10GbE
- 16 GB ECC DDR4 Up to 64 GB
- Up to 40 drive bays with RX1217(RP)
Type | NAS |
---|---|
Processor | Intel Xeon D |
Ethernet ports | 6 |
Storage drives installed | Yes |
SKU | RS4021XS+/256T/16X16T |
Manufacturer | Synology |
Availability | In Stock |
Product Family | RackStation |
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.
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.
Storage | |
---|---|
Total installed storage capacity | 256 TB |
Online RAID migration | Yes |
Online RAID expansion | Yes |
Storage drives installed | Yes |
Installed storage drive type | HDD |
Number of storage drives installed | 16 |
Supported storage drive types | HDD & SSD |
Number of storage drives supported | 16 |
Storage drive interface | Serial ATA III |
Storage drive capacity | 16 TB |
Storage drive size | 3.5" |
Hot-swap drive bays | Yes |
RAID support | Yes |
Supported file systems | BTRFS, FAT32, HFS+, NTFS, exFAT, ext3, ext4 |
RAID levels | 0, 1, 5, 6, 10, F1, JBOD |
HDD speed | 7200 RPM |
Supported storage drive interfaces | Serial ATA II, Serial ATA III |
Storage drive sizes supported | 2.5,3.5" |
Processor | |
Processor manufacturer | Intel |
Processor threads | 16 |
Processor cache | 12 MB |
Processor boost frequency | 2.7 GHz |
CPU configuration (max) | 1 |
Conflict-Free processor | Yes |
Processor frequency | 2.1 GHz |
Processor family | Intel® Xeon® D |
Processor model | D-1541 |
Processor cores | 8 |
Memory | |
Internal memory type | DDR4 |
Internal memory | 16 GB |
Memory clock speed | 2666 MHz |
Maximum RAM supported | 64 GB |
Memory slots | 4 |
Memory form factor | UDIMM |
ECC | Yes |
Network | |
Link aggregation | Yes |
Ethernet LAN data rate supported (max) | 10000 Mbit/s |
Ethernet LAN | Yes |
Ethernet LAN data rates | 10,100,1000,10000 Mbit/s |
Wake-on-LAN ready | Yes |
Supported network protocols | SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN |
iSCSI support | Yes |
Ports & interfaces | |
USB port | Yes |
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
PCI Express x8 (Gen 3.x) slots | 2 |
Ethernet LAN (RJ-45) ports | 6 |
Hard drive | |
RAID support | Yes |
Supported file systems | BTRFS, FAT32, HFS+, NTFS, exFAT, ext3, ext4 |
RAID levels | 0, 1, 5, 6, 10, F1, JBOD |
HDD speed | 7200 RPM |
Design | |
Cooling type | Active |
Fan diameter | 8 cm |
Product colour | Black |
Number of fans | 3 fan(s) |
LED indicators | Yes |
Chassis type | Rack (3U) |
Technical details | |
Type | NAS |
Device class | Small & Medium Business |
Backup function | Yes |
Backup features | Cloud, iSCSI LUN |
Product colour | Black |
Number of users | 16000 user(s) |
Noise level | 44.7 dB |
Multilingual support | Yes |
LED indicators | Yes |
Chassis type | Rack (3U) |
Buzzer | Yes |
Number of fans | 3 fan(s) |
Sustainability compliance | Yes |
Sustainability certificates | UL ECOLOGO |
Compliance certificates | CE, RoHS |
Performance | |
Built-in FTP server | Yes |
System log | Yes |
Share folder | CIFS/AFP/NFS/FTP/WebDAV |
Browser supported | Chrome, Firefox, Edge, Internet Explorer, Safari |
Type | NAS |
Device class | Small & Medium Business |
Backup function | Yes |
Backup features | Cloud, iSCSI LUN |
On/off switch | Yes |
Windows operating systems supported | Yes |
Mac operating systems supported | Yes |
Security algorithms | 256-bit AES, HTTPS, SSH, SSL/TLS |
Reset button | Yes |
Operating system installed | DiskStation Manager |
Number of users | 16000 user(s) |
Noise level | 44.7 dB |
Multilingual support | Yes |
Buzzer | Yes |
Access Control List (ACL) | Yes |
Third-party support | Yes |
Snapshot | Yes |
Cooling | |
Cooling type | Active |
Fan diameter | 8 cm |
Number of fans | 3 fan(s) |
Security | |
---|---|
Security algorithms | 256-bit AES, HTTPS, SSH, SSL/TLS |
Access Control List (ACL) | Yes |
Software | |
Windows operating systems supported | Yes |
Mac operating systems supported | Yes |
Operating system installed | DiskStation Manager |
Management features | |
On/off switch | Yes |
Reset button | Yes |
Power | |
Power consumption (HDD standby) | 62.68 W |
Power supply location | Built-in |
Power supply unit (PSU) capacity | 800 W |
AC input voltage | 100 - 240 V |
AC input frequency | 50 - 60 Hz |
Redundant power supply (RPS) support | Yes |
Power consumption (typical) | 145.79 W |
Weight & dimensions | |
Width | 482 mm |
Depth | 656.5 mm |
Height | 132.3 mm |
Packaging content | |
Cables included | AC |
Power cables quantity | 2 |
Processor special features | |
Intel VT-x with Extended Page Tables (EPT) | Yes |
Intel Virtualization Technology for Directed I/O (VT-d) | Yes |
Intel Virtualization Technology (VT-x) | Yes |
Intel TSX-NI version | 1.00 |
Intel TSX-NI | Yes |
Intel Trusted Execution Technology | Yes |
Intel Secure Key Technology version | 1.00 |
Intel Enhanced Halt State | Yes |
Intel 64 | Yes |
Idle States | Yes |
Execute Disable Bit | Yes |
Enhanced Intel SpeedStep Technology | Yes |
Embedded options available | No |
System requirements | |
Windows operating systems supported | Yes |
Mac operating systems supported | Yes |
Operational conditions | |
Storage temperature (T-T) | -20 - 60 °C |
Storage relative humidity (H-H) | 5 - 95% |
Operating temperature (T-T) | 0 - 35 °C |
Operating relative humidity (H-H) | 5 - 95% |
Operating altitude | 0 - 5000 m |
Certificates | |
Certification | FCC, BSMI, VCCI, RCM, EAC, CCC, KC |
Packaging data | |
Cables included | AC |
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---|---|---|---|---|---|---|
SKU |
RS4021XS+/256T/16X16T
|
HD6500
|
RS2821RP+/256TB-HAT5300
|
RS4021XS+/192T/16X12T
|
K/RS4021XS+_+16X_HAT5300-12T
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Description |
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. |
All the space you will ever need
With 60 bays in a 4U rackmount enclosure and support for up to 300 drives after expansion, the Synology HD6500 is the ideal high-density storage solution for large-scale warm and cold storage applications such as full system backups, video post-production, and large surveillance deployments. Consistent performance at five times the size The HD6500 is designed to scale up to 5 times in capacity with four additional RX6022sas expansion units. SAS multipath-enabled connectivity provides up to double the typical performance together and increased redundancy. Built for high reliability The HD6500 is built to keep mission-critical data and services accessible, so that businesses can continue to perform even when disaster strikes. Out-of-band (OOB) management Simplify troubleshooting by managing powered-down devices remotely and accessing critical logs through a dedicated interface. Dual power supply Reduce the possibility of power disruptions on a single distribution channel or PDU adversely impacting data and service availability with redundant PSUs. High-reliability expansion architecture Redundant SAS links prevent single points of failure from affecting other expansion units, ensuring higher data and service availability. Powerful networking options The HD6500 supports a large variety of networking interfaces, protocols, and configurations, whether you need fast sequential transfer, support for simultaneous connections, or high network redundancy. Built-in fast connectivity Three Gigabit Ethernet and two 10GbE RJ-45 ports allow for rapid transfer speeds right out of the box. Mix and match network ports Add extra 10GbE SFP+/RJ-45, 25GbE SFP28, or Fibre Channel ports in varying configurations by leveraging the four expansion slots.2 Failover and network balancing Bond multiple network interfaces with Link Aggregation to enable automatic network failover and load balancing. Consolidate your data storage Back up your backup solutions, bring all your files together in one place, or bring distributed surveillance deployments under central control. Massive file server Host and retrieve massive files from extensive archives whenever needed. Provide user friendly access and set up powerful cross-site syncing. Central backup server Protect large numbers of PCs, servers, Synology systems, and hypervisors, or back up your backup servers with a central storage solution. Main surveillance storage Manage distributed deployments of hundreds of local recording servers and thousands of IP cameras centrally. Get more with DiskStation Manager Take advantage of a host of native productivity, management, and security solutions available in the web-based Synology DSM operating system. |
Versatile and scalable storage
Synology RS2821RP+ is a 3U 16-bay storage server designed to accommodate a diverse set of business requirements. Scalable to 28 drives, the unit provides powerful backup and restoration functionality for the SMB sector. It delivers 2,200 MB/s sequential read and 105K 4K random read performance, and can be upgraded with SSD cache and 10/25Gb Ethernet options. High performance storage for anything Over 105K/59K random read/write IOPS and up to 2,220/1,164 MB/s sequential read/write throughput ensure ample performance for demanding workloads. Built for reliability Redundant power Reduce the possibility of power disruptions on a single distribution channel or PDU adversely impacting data and service availability. Near-zero downtime Pair two identical devices with Synology High Availability and enable automatic minute-level failover between both devices in the event one server fails. Data integrity and protection ECC memory prevents data corruption, while the Btrfs file system brings higher reliability, snapshot technology, and simplified data protection. Customize to suit Easily adapt the RS2821RP+ to any business environment by adding faster networking, local SSD cache, or storage capacity. 10/25GbE ready Support for 10/25GbE NICs lets you boost server throughput up to five times using Link Aggregation (bonding). SSD cache Boost read/write IOPS over HDD-only arrays by up to 16 times or more with NVMe or SATA On-demand drive bays Expand to 28 drive bays with one RX1217(RP) expansion unit License-free backup solutions Hyper Backup Back up files, iSCSI LUNs, installed applications, and system configurations to destinations including Synology C2 Storage, public cloud platforms, USB devices, file servers, local folders, or other Synology NAS. Set and forget backup tasks with regular schedules, enhance security with fine-grained user permissions and encryption, keep backup sizes small with built-in deduplication, and restore data flexibly with multi-versioning. Snapshot Replication Snapshot Replication enables flexible point-in-time snapshots of shared folders, and virtual machines with an RPO as low as 5 minutes and recovery within seconds. Active Backup Suite Securely back up Windows clients and servers, Microsoft 365 and Google Workspace accounts, file servers, and VMware and Hyper-V virtual machines with the Active Backup Suite. Leverage built-in deduplication technology to reduce backup sizes and multi-versioning to allow flexible restoration. Serving remote workforces Keep your remote workforce connected with powerful out-of-the-box solutions for collaboration, file sharing, and communication. Synology Drive Host your own private cloud behind the safety of your NAS with 100% data ownership and no subscription fees. Synology Office Create documents, spreadsheets, and slides in a multi-user environment. Real-time collaboration and automatic saving make remote work sessions a breeze. Synology Chat Chat and collaborate with colleagues using secure end-to-end encryption on with mobile, desktop, and browser clients. Storage for virtualization DSM streamlines provisioning for and management of virtual machines with full certification for VMware® vSphere™, Microsoft® Hyper-V®, Citrix® XenServer™, and OpenStack virtualization environments. Synology Storage Console for VMware or Windows platforms lets you manage storage directly from your hypervisor. VMware VAAI integration and Windows ODX help offload storage operations and speed up data transfer. Works best with Synology drives Engineered to handle intensive 24/7 workloads, Synology drives consistently deliver top-grade performance. Powered by Synology DiskStation Manager The web-based DiskStation Manager (DSM) operating system supports a host of native productivity and management solutions. Central Management System Conveniently manage your fleet of Synology NAS from a centralized console. Synology Drive Instantly access your NAS files across multiple devices whenever you want, wherever you are. Collaboration Suite Satisfy all team collaboration needs behind the safety of your own private cloud with Synology Office, Calendar, and Chat. Virtual Machine Manager Run various operating systems in isolated sandboxes. Seamlessly clone, store, and migrate virtual machines. Security Shield your Synology NAS from the most sophisticated threats with industry-leading security solutions. Surveillance Protect your home or business with intelligent monitoring and video management tools. |
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. |
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. |
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. |
Short Description |
256 TB, 3U, Intel Xeon D-1541 (8x 2.1GHz), 16GB DDR4, 16x 2.5"/3.5", 2x USB 3.2 Gen1, 4x 1GbE RJ-45, 2x 10GbE RJ-45
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High Density HD6500, 2 x Intel Xeon Silver 4210R 10-core, 64 GB DDR4 ECC RDIMM, 60 x 3.5" SAS HDD, Rackmount 4U
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256TB, 3U, AMD Ryzen V1500B (4x 2.2GHz), 4GB DDR4, 16x 2.5"/3.5" SATA, 4x RJ-45, 2x USB 3.2 Gen1
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192 TB, 3U, Intel Xeon D-1541 (8x 2.1GHz), 16GB DDR4, 16x 2.5"/3.5", 2x USB 3.2 Gen1, 4x 1GbE RJ-45, 2x 10GbE RJ-45
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192 TB, 3U, Intel Xeon D-1541 (8x 2.1GHz), 16GB DDR4, 16x 2.5"/3.5", 2x USB 3.2 Gen1, 4x 1GbE RJ-45, 2x 10GbE RJ-45
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256 TB, 3U, Intel Xeon D-1541 (8x 2.1GHz), 16GB DDR4, 16x 2.5"/3.5", 2x USB 3.2 Gen1, 4x 1GbE RJ-45, 2x 10GbE RJ-45
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Manufacturer |
Synology
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Synology
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Synology
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Synology
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Synology
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Synology
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