Synology RackStation RS4021xs+ 16-Bay NAS Enclosure

BH #SYRS4021XSP • MFR #RS4021XS+
Synology RackStation RS4021xs+ 16-Bay NAS Enclosure
Key Features
  • 16 x 3.5"/2.5" SATA Drive Bays
  • 2.1 GHz Intel Xeon D-1541 Eight-Core
  • 16GB of DDR4 ECC RAM
  • 2 x 10GbE RJ45 | 4 x GbE RJ45
Designed for high throughput and data integrity, the RackStation RS4021xs+ 16-Bay NAS Enclosure from Synology is a 16-bay, 3 RU storage solution with built-in redundant power that is capable of hosting demanding services involving virtualization, mail, office collaboration, and surveillance, to meet the unique requirements of enterprise environments. This unit has 16 drive bays, each of which natively supports 3.5" SATA hard drives, as well as 2.5" SATA hard drives and SSDs. Should users need to expand the overall capacity of their RS4021xs+, two optional RX1217/RX1217RP expansion units may be used to connect up to 24 additional drive bays, and each unit is connected using an integrated expansion port. The RS4021xs+ can deliver 4K random reads of up to 234,698 IOPS and sequential reads of up to 6258 MB/s.
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$5,399.99
$450/mo. suggested payments for 12 Mos.
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Synology RS4021xs+ External HDD Overview

Designed for high throughput and data integrity, the RackStation RS4021xs+ 16-Bay NAS Enclosure from Synology is a 16-bay, 3 RU storage solution with built-in redundant power that is capable of hosting demanding services involving virtualization, mail, office collaboration, and surveillance, to meet the unique requirements of enterprise environments. This unit has 16 drive bays, each of which natively supports 3.5" SATA hard drives, as well as 2.5" SATA hard drives and SSDs. Should users need to expand the overall capacity of their RS4021xs+, two optional RX1217/RX1217RP expansion units may be used to connect up to 24 additional drive bays, and each unit is connected using an integrated expansion port. The RS4021xs+ can deliver 4K random reads of up to 234,698 IOPS and sequential reads of up to 6258 MB/s.

The RackStation RS4021xs+ is powered by a 2.1 GHz Intel Xeon D-1541 Eight-Core processor, which will allow you to run multiple functions simultaneously. The built-in 16GB of DDR4 ECC RAM, which comes in a 1 x 16GB configuration, will allow quick access to frequently used files and programs and may also be upgraded to a total of 64GB by using a 16GB module in each of the four 288-pin DIMM slots. Also featured are two USB 3.2 Gen 1 Type-A ports, which allow it to be connected to external peripherals. Network connectivity is achieved via the two 10 Gigabit Ethernet or four Gigabit Ethernet ports with failover support, which help to provide redundancy in the case that a LAN connection malfunction occurs on one port. In addition, link aggregation helps to increase connection speeds beyond the limits of a single network port or cable. If you're looking to expand this NAS, there are two PCIe Gen 3.0 x8/x8 slots that support network interface cards and M.2 NVMe adapter cards for an SSD cache.

The RackStation RS4021xs+ runs on the DiskStation Manager (DSM) operating system, which helps simplify managing your NAS, as well as accessing and sharing data. A variety of RAID modes are supported, which help provide users with data redundancy, speed, or a combination of both. Supported RAID modes include RAID 0, 1, 5, 6, 10, Basic, and Synology RAID F1. For those who do not require a RAID, JBOD is also available, allowing each drive bay to be individually utilized.

Synology has engineered the RackStation RS4021xs+ to be energy efficient. Not only does it offer three 80 x 80mm fans to help keep the system running cool, the server supports numerous scheduled power on / off cycles and hard-drive hibernation to further minimize power consumption and operation expenses. The RackStation RS4021xs+ operates on 100-240 VAC at 50/60 Hz and includes an accessory pack and two AC power cords. Protection is provided by a limited 5-year hardware warranty.

General Features
Built to Handle Intensive Workloads
The Synology RackStation RS4021xs+ is built to deliver exceptional performance, flexibility, and scalability to meet the requirements of businesses. It delivers a 4K random read performance of up to 234,698 IOPS and sequential read speeds of 6258 MB/s for demanding workloads. It is built with 12 drive bays that support 3.5" hard drives, as well as 2.5" hard drives and SSDs, and may be expanded to 40 bays using two Synology RX1217(RP) expansion units.
Optimized for Data Protection and Integrity
Powered by Synology DSM, Synology's unified data management operating system, and built upon the Btrfs file system, data stored on the RS4021xs+ is safely guarded by modern data protection technologies.

Advanced Snapshots Technology
Provides schedulable and near-instantaneous data protection of shared folders and LUNs.

File and Folder-Level Data Restoration
Enables restoration of specific files or folders.

Flexible Storage Quota System
Helps admins effortlessly manage available space by specifying storage limits for shared folder.

File Self-Healing
Detects and recovers corrupted files using mirrored metadata and RAID configurations.

Inline Compression
Compresses data before writing it to the drive, reducing write commands and optimizing storage space.
Virtualization and Certified Storage
DSM streamlines the provisioning and management of storage for virtual machines (VM). Certified for VMware vSphere, Microsoft Hyper-V, Citrix XenServer, and OpenStack, it integrates with your virtualization platform of choice through iSCSI or NFS protocols. Install Synology Storage Console on VMware or Windows platforms for additional management convenience and functionality right in the hypervisor.

Synology Virtual Machine Manager
A hosted supervisor for virtual machines running Windows, Linux, or virtualized versions of DSM with recovery mechanisms that help ensure data protection on each VM.
Data Backup Solutions for IT Infrastructure
Synology Active Backup Suite
A collection of license-free backup solutions built to help protect Windows systems and servers, VMs, other file servers, and cloud-based storage.

Active Backup for Businesses (ABB)
Consolidates backup tasks for physical and virtual environments and enables rapid restoration of files, entire physical machines, and VMs.

Active Backup for G Suite
Enables backup of Google Workspace data, including Gmail, Contacts, Calendar, and Drive.

Active Backup for Microsoft 365
Enables backup of Microsoft 365 data, including OneDrive for Business, SharePoint Online, emails, contacts, and calendar.
On-Premises Collaboration
Synology's collaboration suite is a private SaaS for file sharing, concurrent document editing, emails, instant messaging, and more. By leveraging a private cloud infrastructure, it ensures data ownership while multilayered security enables secure multi-platform access.

Synology Drive
Allows data access, synchronization, on-demand file restoration, and backup.

Synology MailPlus
Provides a secure, reliable, and private email server.

Synology Chat
Brings teams together through instant multi-platform communication.

Synology Calendar
Helps teams keep track of what is most important with convenient calendar sharing and scheduling.
Private Video Surveillance
With Synology Surveillance Station, the RS4021xs+ becomes a powerful Network Video Recorder solution with support for up to 90 IP cameras. It supports over 7600 camera models with ONVIF support to prevent vendor lock-in. You'll also have private, subscription-free storage of the recordings that can be accessed through a web browser, dedicated desktop client, or mobile app. Finally, there are event-based rules to trigger specific actions, plus an email, SMS, or push notification system.
UPC: 846504004089

Synology RS4021xs+ External HDD Specs

Key Specs
Number of Bays
16x 2.5"/3.5" SATA III
Inputs/Outputs
2x USB-A 3.0 / 3.1/3.2 Gen 1
2x RJ45 10GbE
4x RJ45 Gigabit Ethernet
2x Infiniband
RAID
RAID 0/1/5/6/10/Basic/F1
Computing
CPU
8-Core: 2.1 to 2.7 GHz
Processor
Intel Xeon D-1541
Total Installed Memory
16 GB ECC DDR4
User-Replaceable Memory
1x 16 GB
Total Memory Slots
4x DIMM
Maximum Memory Capacity
64 GB
General
Number of Bays
16x 2.5"/3.5" SATA III
Inputs/Outputs
2x USB-A 3.0 / 3.1/3.2 Gen 1
2x RJ45 10GbE
4x RJ45 Gigabit Ethernet
2x Infiniband
Media Card Slots
No
Form Factor
Rackmount (3 RU)
RAID
RAID 0/1/5/6/10/Basic/F1
Hot-Swap Support
Yes
PCI Expansion
2x PCIe 3.0 (x8 Electrical)
Wake on LAN
Yes
Link Aggregation and Failover Support
Yes
Networking
Supported Protocols
AFP
CIFS/SMB
CalDAV
DLNA
FTP
HTTP
HTTPS
L2TP
LDAP
NFS
OpenVPN
PPTP
SMB
SNMP
WebDAV
iSCSI
iSCSI LUN
512
iSCSI Target
256
Max Concurrent Connections
4000
Max Folders
512
Max Sync Tasks
32
Max Groups
512
Max User Accounts
16,000
Max Volume Number
256
Max Cameras Supported
90
Software
Installed Operating System
Synology OS
Supported File Systems
Internal: BTRFS, EXT4
External: BTRFS, EXT3, EXT4, FAT32, HFS+, NTFS, exFAT
OS Compatibility
Windows 7 or Later
macOS 10.12 or Later
Mobile App Compatible
Yes
Supported Browsers
Chrome, Edge, Firefox, Internet Explorer, Safari
Supported Languages
Brazilian Portuguese
Czech
Danish
Dutch
English
French
German
Hungarian
Italian
Japanese
Korean
Norwegian
Polish
Portuguese
Russian
Simplified Chinese
Spanish
Swedish
Thai
Traditional Chinese
Turkish
Security
Encryption
AES-NI
VPN Server Connections
40
Electrical
Input Power
100 to 240 VAC, 50 / 60 Hz
Power Source
Internal Power Supply
Power Consumption
145.79 W (Typical)
62.68 W (Standby)
PSU Wattage
2 x 800 W (Supports Redundancy)
Environmental
Operating Temperature
32 to 95°F / 0 to 35°C
Operating Humidity
5 to 95%
Storage Temperature
-5 to 140°F / -20 to 60°C
Certifications
BSMI, CCC, CE, EAC, FCC, RCM, RoHS, UL, VCCI
Physical
Status Monitoring
LED Indicator
Cooling
3x 80 mm Fans
Noise Level
44.7 dBA
Built-In Speakers
No
Dimensions
25.8 x 19 x 5.2" / 656.5 x 482 x 132.3 mm
Weight
38.4 lb / 17.4 kg
Packaging Info
Package Weight
50.49 lb
Box Dimensions (LxWxH)
35 x 24.38 x 12"

Synology RS4021xs+ External HDD Reviews

See any errors on this page? Let us know

Does this require those synology branded drives ...

Does this require those synology branded drives or can I still use exos drives?
Asked by: Cody
You can use any 3.5" drive.
Answered by: Nilson D
Date published: 2023-05-02
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