Synology RackStation RS4021xs+ Rack (3U) NAS with 16 x 16TB HAT5300 Drives | 16-bay, HDD & SSD, Intel Xeon D CPU, 16 GB GB RAM, 6 x LAN Ports
KEY FEATURES
- 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)
100% Safe & Secure Checkout
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Frequently Asked Questions
Synology RackStation RS4021xs+ Rack (3U) NAS with 16 x 16TB HAT5300 Drives | 16-bay, HDD & SSD, Intel Xeon D CPU, 16 GB GB RAM, 6 x LAN Ports
Description
Synology RackStation RS4021xs+. Total installed storage capacity: 256 TB, Installed storage drive type: HDD, Supported storage drive types: HDD & SSD. Processor family: Intel® Xeon® D, Processor manufacturer: Intel, Processor model: D-1541. Internal memory: 16 GB, Internal memory type: DDR4, Maximum RAM supported: 64 GB. Ethernet LAN data rates: 1000,10000 Mbit/s, Ethernet LAN data rate supported (max): 10000 Mbit/s, Supported network protocols: SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN. Chassis type: Rack (3U), Cooling type: Active, Product colour: Black
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.
Feature
Easy 14 days Returns
Eligible for Next day Delivery
100% Money-back guarantee
Reliable Customer Support
Secure payment method
Shipping Information
- Next Business Day: £6.99
- 2 days Delivery: £4.99
- 3- 5 Days Shipping: £3.99
- Orders Over £99.00: Free Standard Delivery
| Storage | |
|---|---|
| Storage drives installed | Yes |
| Total installed storage capacity | 256 TB |
| Number of storage drives installed | 16 |
| Number of storage drives supported | 16 |
| Installed storage drive type | HDD |
| Supported storage drive types | HDD & SSD |
| Storage drive capacity | 16 TB |
| Storage drive interface | Serial ATA II, Serial ATA III |
| Supported storage drive interfaces | Serial ATA II, Serial ATA III |
| Storage drive sizes supported | 2.5,3.5" |
| RAID support | Yes |
| RAID levels | 0, 1, 5, 6, 10, F1, JBOD |
| Online RAID migration | Yes |
| Online RAID expansion | Yes |
| Hot-swap drive bays | Yes |
| Supported file systems | BTRFS, FAT32, HFS+, NTFS, exFAT, ext3, ext4 |
| Processor | |
|---|---|
| Processor manufacturer | Intel |
| Processor family | Intel® Xeon® D |
| Processor model | D-1541 |
| Processor frequency | 2.1 GHz |
| Processor boost frequency | 2.7 GHz |
| Processor cores | 8 |
| Processor threads | 16 |
| Processor cache | 12 MB |
| CPU configuration (max) | 1 |
| Conflict-Free processor | Yes |
| Memory | |
|---|---|
| Internal memory type | DDR4 |
| Internal memory | 16 GB |
| Maximum RAM supported | 64 GB |
| Memory slots | 4 |
| ECC | Yes |
| Memory form factor | UDIMM |
| Network | |
|---|---|
| Ethernet LAN | Yes |
| Ethernet LAN data rates | 1000,10000 Mbit/s |
| Ethernet LAN data rate supported (max) | 10000 Mbit/s |
| iSCSI support | Yes |
| Wake-on-LAN ready | Yes |
| Link aggregation | Yes |
| Supported network protocols | SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN |
| Ports & interfaces | |
|---|---|
| Ethernet LAN (RJ-45) ports | 6 |
| 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 |
| Design | |
|---|---|
| Chassis type | Rack (3U) |
| Cooling type | Active |
| Product colour | Black |
| Number of fans | 3 fan(s) |
| Fan diameter | 8 cm |
| Drive bay locking | Yes |
| LED indicators | Yes |
| Performance | |
|---|---|
| Type | NAS |
| Device class | Small & Medium Business |
| Backup function | Yes |
| Backup features | Cloud, iSCSI LUN |
| Buzzer | Yes |
| Multilingual support | Yes |
| Number of users | 16000 user(s) |
| Noise level | 44.7 dB |
| Snapshot | Yes |
| System log | Yes |
| Share folder | SMB/AFP/NFS/FTP/WebDAV |
| Browser supported | Chrome, Firefox, Edge, Internet Explorer, Safari |
| Built-in FTP server | Yes |
| On/off switch | Yes |
| Reset button | Yes |
| Access Control List (ACL) | Yes |
| Security algorithms | 256-bit AES, HTTPS, SSH, SSL/TLS |
| Software | |
|---|---|
| Operating system installed | DiskStation Manager |
| Windows operating systems supported | Yes |
| Mac operating systems supported | Yes |
| Power | |
|---|---|
| Power supply location | Built-in |
| Power supply unit (PSU) capacity | 800 W |
| Redundant power supply (RPS) support | Yes |
| Power consumption (typical) | 145.79 W |
| Power consumption (HDD standby) | 62.68 W |
| AC input voltage | 100 - 240 V |
| AC input frequency | 50 - 60 Hz |
| General Information | |
|---|---|
| Product Family | RackStation |
| Weight & dimensions | |
|---|---|
| Width | 482 mm |
| Depth | 656.5 mm |
| Height | 132.3 mm |
| Technical details | |
|---|---|
| Compliance certificates | CE, RoHS |
| Harmonized System (HS) code | 84714100 |
| Sustainability compliance | Yes |
| Sustainability certificates | UL ECOLOGO |
| 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 |
| Operational conditions | |
|---|---|
| Operating temperature (T-T) | 0 - 35 °C |
| Operating relative humidity (H-H) | 5 - 95% |
| Storage relative humidity (H-H) | 5 - 95% |
| Operating altitude | 0 - 5000 m |
| Storage temperature (T-T) | -20 - 60 °C |
| Certificates | |
|---|---|
| Certification | FCC, BSMI, VCCI, RCM, EAC, CCC, KC |
Frequently Asked Questions
When will it arrive?
Any order over £99 wil be shipped on our free 2-3 working day service, if you opt for Next Working Day shipping then this will be with you the next working day between 09:00 and 18:00. Deliveries to Northern Ireland, Channel Islands and the Scottish Highlands will be on a 3 day service.
Do you offer a credit account?
We offer credit accounts to Gotraka Business customers, please enquire with our customer support team for more information. Credits accounts are subject to KYC.
How long is the returns policy?
For most products bought online, you have a legal right to change your mind within 14 days and receive a refund. If you wish to return unwanted products, you must let us know that you want to return them within 14 calendar days from the day after delivery. The item must also be returned to us within 7 working days from approval of return and receipt of the return label.
How long will it take to receive my order?
This is something that we are working hard to bring to you - we recognise that having deliveries on preferred days not only makes it easier for you but it is also great for the environment. By having deliveries arranged on days that you are going to be in or consolidating your orders to arrive to you at the same time means that the courier won't need to come back multiple times due to missed deliveries or multiple deliveries.
Can I change my delivery address once the order has been placed?
Our systems are highly automated, where possible we will do our utmost to accommodate this. To ensure we maintain a high delivery success rate most of our orders are picked and prepped for shipment within 30 minutes
How do I return my order?
If you need to return your order please raise a return through your order page detailing the reason for return. Once this form has been submitted it will be reviewed by the Returns Department who will contact you to arrange the return.
Please note the returns department may ask for more information such as the serial number(s) and images where applicable to process the return.
How long do I have to return an item?
For most products bought online, you have a legal right to change your mind within 14 days and receive a refund. If you wish to return unwanted products, you must let us know that you want to return them within 14 calendar days from the day after delivery. The item must also be returned to us within 7 working days from approval of return and receipt of the return label
Are returns free?
Returns for faulty / damaged items will be free of charge
Returns for unwanted items that have no fault will incur a minimal returns fee - delivery charges will not be refunded
Can’t find what you’re looking for?
Our friendly support team is just a message away, ready to assist with anything. Our team is experienced with gaming gear, home tech, and everything in between—feel free to reach out.
📧 Email: help@gotraka.com
📞 Phone: 020 8208 1234
💬 Live Chat: Available 9 AM – 6 PM ( Monday - Friday )
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