Synology RackStation RS4021xs+

Name: Synology RackStation RS4021xs+
Brand: Synology

Photos - NAS Server Synology RackStation RS4021xs+

Videos ₂Photos ₆

How to buy

from £5,814.79 up to £13,054.50

Compare prices ₁₀ →

When you make a purchase through links on our site, we may receive a affiliate commission.

Synology RackStation RS4021xs+

RackStation mail server

Main
Mount	desktop


Drives
3.5" drive slots	16
Max. storage capacity	256 TB
HDD connection interface	SATA 3
Hot swap
RAID	RAID 0 RAID 1 RAID 5 RAID 6 RAID 10 JBOD Basic, RAID F1


Connection
LAN ports	1
LAN speed	100 Mbps


Features
Software features	Web server FTP server multimedia (DLNA, iTunes, uPnP) BitTorrent client mail server database server video surveillance server backup virtualization

Hardware
Operating system	DSM 7.0
CPU	Intel Xeon D-1541
CPU cores	8 cores (16 threads)
CPU speed	2.1 GHz
TurboBoost frequency	2.7 GHz
RAM	16 GB
Max. RAM	64 GB
RAM slots	4


General
Power consumption	145.79 W
Backup power supply
Cooling	active
Noise level	44.7 dB
Size	482x657x132 mm
Weight	17.4 kg
Official Website	synology.com
Added to E-Catalog	November 2021

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Synology 2026 - new arrivals, bestsellers, and the most relevant models Synology.

How to Choose a NAS ServerLet's explore the basic capabilities of NAS storage for home and studio use.

Buy Synology RackStation RS4021xs+

All prices 10 →

When you make a purchase through links on our site, we may receive a affiliate commission.


	Synology RackStation RS4021XS+ NAS/storage server Rack (3U) Ethernet L Synology RackStation RS4021XS+ NAS/storage server Rack (3U) Ethernet LAN Black D-1541 Securing your business assets The 16-ba... morey 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 Pcnova.co.uk Delivery: in United Kingdom Report	£5,814.79 Buy in shop

	Synology RackStation RS4021XS+ 16GB RAM 16 Bay Rackmount NAS RS4021XS+ . Enterprise NAS with built-in service continuity engineered for data-intensive applicationsKey Product Info . Securing your... morebusiness assetsEngineered for service continuityRedundant powerMaximize service availabilityNext-generation file systemCustomized to your businessHyper BackupSnapshot replicationActive backup suite Product Features Securing your business assetsThe 16-bay RS4021xs+ provides solid data security and lightning-fast performance. 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 continuityThe RS4021xs+ ensures mission-critical data is always available enabling businesses to deliver great results even in the face of disaster. Redundant powerDual 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 availabilitySynology High Availability (SHA) pairs two identical units together creating an active-passive cluster with minute-level failover. Next-generation file systemBtrfs prevents data corruption and reduces maintenance overheads with advanced storage technologies and optimized snapshots. Customized to your businessThe RS4021xs+ includes two PCIe slots for performance networking and storage upgrades enabling it to adapt to any business environment. Hyper BackupA 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. Deduplication integrity checks and incremental transfer technology reduce bandwidth and storage use. Snapshot replicationEasily 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. Active backup suiteEnables administrators to easily backup the entire IT infrastructure to their NAS including Windows and Linux workstations and servers file servers VMware and Hyper-V virtual machines and Microsoft 365 and Google Workspace accounts. Backups benefit from deduplication multiversioning and optimizations to reduce bandwidth and storage used. ServersDirect.co.uk Delivery: in United Kingdom Report	£5,849.97 Buy in shop

	Synology RackStation RS4021XS+ 16GB RAM 16 Bay Rackmount NAS Black RS4021XS+ . Enterprise NAS with built-in service continuity engineered for data-intensive applicationsKey Product Info . Securing your... morebusiness assetsEngineered for service continuityRedundant powerMaximize service availabilityNext-generation file systemCustomized to your businessHyper BackupSnapshot replicationActive backup suite Product Features Securing your business assetsThe 16-bay RS4021xs+ provides solid data security and lightning-fast performance. 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 continuityThe RS4021xs+ ensures mission-critical data is always available enabling businesses to deliver great results even in the face of disaster. Redundant powerDual 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 availabilitySynology High Availability (SHA) pairs two identical units together creating an active-passive cluster with minute-level failover. Next-generation file systemBtrfs prevents data corruption and reduces maintenance overheads with advanced storage technologies and optimized snapshots. Customized to your businessThe RS4021xs+ includes two PCIe slots for performance networking and storage upgrades enabling it to adapt to any business environment. Hyper BackupA 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. Deduplication integrity checks and incremental transfer technology reduce bandwidth and storage use. Snapshot replicationEasily 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. Active backup suiteEnables administrators to easily backup the entire IT infrastructure to their NAS including Windows and Linux workstations and servers file servers VMware and Hyper-V virtual machines and Microsoft 365 and Google Workspace accounts. Backups benefit from deduplication multiversioning and optimizations to reduce bandwidth and storage used. Laptopsdirect.co.uk Delivery: to United Kingdom Report	£5,849.97 Buy in shop

	Synology RackStation RS4021XS+ NAS/storage server Rack (3U) Ethernet L RS4021XS+ Securing your business assets The 16-bay RS4021xs+ provides solid data security and lightening-fast performance with over 234... moreK 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 Gamingkit.co.uk Delivery: in United Kingdom Report	£5,891.40 Buy in shop

	Synology RackStation RS4021XS+ NAS/storage server Rack (3U) Intel® Xeon® D-1541 16 GB DDR4 Black RS4021XS+ Small & Medium Business Storage server Rack (3U) Black. Number of storage drives supported: 16 HDD & SSD. Intel® Xeon® D-1541... more2.1 GHz. 16 DDR4 Memory slots: 4 UDIMM ECC. Ethernet LAN 10000 Wake-on-LAN ready. Cooling type: Active. 800 W. 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 Backtotheoffice.co.uk Delivery: in United Kingdom Report	£6,094.99 Buy in shop