Synology RackStation RS4021xs+ 3U 16 Bay NAS, Xeon D-1541, 16GB
The RS4021XS+ from Synology is a powerful rack server designed for demanding applications in enterprise environments. With a form factor of 3U, this server accommodates up to 16 hard drives, providing high storage capacity and flexibility. Equipped with an Intel Xeon D-1541 processor featuring 8 cores and a clock speed of 2.1 GHz, the server ensures efficient processing of data and applications. Connectivity is supported by two RJ45 10 Gigabit Ethernet ports, offering a maximum port speed of 10 Gbit/s for fast network connections. The RS4021XS+ utilizes DDR4 RAM, which enhances performance and energy efficiency compared to older RAM types. This barebone server is ideal for businesses seeking a scalable and powerful solution for their IT infrastructure.
The RS4021XS+ from Synology is a powerful rack server designed for demanding applications in enterprise environments. With a form factor of 3U, this server accommodates up to 16 hard drives, providing high storage capacity and flexibility. Equipped with an Intel Xeon D-1541 processor featuring 8 cores and a clock speed of 2.1 GHz, the server ensures efficient processing of data and applications. Connectivity is supported by two RJ45 10 Gigabit Ethernet ports, offering a maximum port speed of 10 Gbit/s for fast network connections. The RS4021XS+ utilizes DDR4 RAM, which enhances performance and energy efficiency compared to older RAM types. This barebone server is ideal for businesses seeking a scalable and powerful solution for their IT infrastructure.
The RS4021XS+ from Synology is a powerful rack server designed for demanding applications in enterprise environments. With a form factor of 3U, this server accommodates up to 16 hard drives, providing high storage capacity and flexibility. Equipped with an Intel Xeon D-1541 processor featuring 8 cores and a clock speed of 2.1 GHz, the server ensures efficient processing of data and applications. Connectivity is supported by two RJ45 10 Gigabit Ethernet ports, offering a maximum port speed of 10 Gbit/s for fast network connections. The RS4021XS+ utilizes DDR4 RAM, which enhances performance and energy efficiency compared to older RAM types. This barebone server is ideal for businesses seeking a scalable and powerful solution for their IT infrastructure.
The RS4021XS+ from Synology is a powerful rack server designed for demanding applications in enterprise environments. With a form factor of 3U, this server accommodates up to 16 hard drives, providing high storage capacity and flexibility. Equipped with an Intel Xeon D-1541 processor featuring 8 cores and a clock speed of 2.1 GHz, the server ensures efficient processing of data and applications. Connectivity is supported by two RJ45 10 Gigabit Ethernet ports, offering a maximum port speed of 10 Gbit/s for fast network connections. The RS4021XS+ utilizes DDR4 RAM, which enhances performance and energy efficiency compared to older RAM types. This barebone server is ideal for businesses seeking a scalable and powerful solution for their IT infrastructure.
in 8 offers
The lowest price for Synology RackStation RS4021xs+ 3U 16 Bay NAS, Xeon D-1541, 16GB right now is $9,655.89 at itclearancecompany.com.au, compared across 8 retailers.
The all-time low was $8,038.09 on 11 Mar 2026 — today's price is 20% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 12 Oct 2026.
Last updated at 12/10/2026 08:03:28
Synology RackStation RS4021XS+ NAS/storage server Rack (3U) Ethernet LAN Black D-1541
Delivery $19
Synology RackStation RS4021XS+ 16-Bay 3U Diskless Scalable NAS Xeon CPU 16GB RAM
Free delivery between 14–19 Oct
Synology RackStation RS4021xs+ 16 Bay Diskless NAS
Delivery $23.83
RS4021XS+ Synology RS4021xs+ 16 Bay Nas RS4021XS+
Delivery between 15–19 Oct $35
Synology Rackmount NAS 16-bay (RS4021XS+) 16-bay, Xeon D-1541 8-core 2.1/2.7GHz, 16GB DDR4 ECC, 4x1GbE, 2x10GbE, 2x PCIe Gen3 x8, 2x USB3.2, 3U
Delivery between 15–24 Oct $12
Synology RackStation RS4021XS+ 16-Bay Xeon D-1541 8-Core NAS
Delivery $30.95
Synology RackStation RS4021XS+ 16-Bay Xeon D-1541 8-Core NAS
Delivery between 14–19 Oct $22.64
Synology Rs4021xs+ Rackstation 16-bay Scalable Nas ( Rail K
Free delivery
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This could have been a nice machine. But the new policy of Synology about vendor lock hard drives is unfair.I already own 4 rackstations with 80 hard disks. Using Synology drives instead of Seagate Exos Enterprise drives means to threw up 10 000 $ or more.Dell plays that sort of limitation more than ten years ago and it was my main reason to move to Synology. Just two years ago, during their annual public show, Synology had close partnership with both Seagate and Western Digital. Now they rebrand Hitachi drives with a label and a dedicated firmware and add 30% to the list price.For those who have warning messages while using other drives, you can hack a file inside the DSM to remove the locks. Otherwise, you are not able to monitor temperature, bad sectors and ... MoreThis could have been a nice machine. But the new policy of Synology about vendor lock hard drives is unfair.I already own 4 rackstations with 80 hard disks. Using Synology drives instead of Seagate Exos Enterprise drives means to threw up 10 000 $ or more.Dell plays that sort of limitation more than ten years ago and it was my main reason to move to Synology. Just two years ago, during their annual public show, Synology had close partnership with both Seagate and Western Digital. Now they rebrand Hitachi drives with a label and a dedicated firmware and add 30% to the list price.For those who have warning messages while using other drives, you can hack a file inside the DSM to remove the locks. Otherwise, you are not able to monitor temperature, bad sectors and so on.Hope this helps.
| General | |
| Device Type | NAS server |
| Host Connectivity | Gigabit Ethernet / 10 Gigabit Ethernet |
| Enclosure Type | Rack-mountable - 3U |
| Total Storage Capacity | 0 GB |
Synology RackStation RS4021XS+ NAS/storage server Rack (3U) Ethernet LAN Black D-1541
Delivery $19
Synology RackStation RS4021XS+ 16-Bay 3U Diskless Scalable NAS Xeon CPU 16GB RAM
Free delivery between 14–19 Oct
Synology RackStation RS4021xs+ 16 Bay Diskless NAS
Delivery $23.83
RS4021XS+ Synology RS4021xs+ 16 Bay Nas RS4021XS+
Delivery between 15–19 Oct $35
Synology Rackmount NAS 16-bay (RS4021XS+) 16-bay, Xeon D-1541 8-core 2.1/2.7GHz, 16GB DDR4 ECC, 4x1GbE, 2x10GbE, 2x PCIe Gen3 x8, 2x USB3.2, 3U
Delivery between 15–24 Oct $12
This could have been a nice machine. But the new policy of Synology about vendor lock hard drives is unfair.I already own 4 rackstations with 80 hard disks. Using Synology drives instead of Seagate Exos Enterprise drives means to threw up 10 000 $ or more.Dell plays that sort of limitation more than ten years ago and it was my main reason to move to Synology. Just two years ago, during their annual public show, Synology had close partnership with both Seagate and Western Digital. Now they rebrand Hitachi drives with a label and a dedicated firmware and add 30% to the list price.For those who have warning messages while using other drives, you can hack a file inside the DSM to remove the locks. Otherwise, you are not able to monitor temperature, bad sectors and ... MoreThis could have been a nice machine. But the new policy of Synology about vendor lock hard drives is unfair.I already own 4 rackstations with 80 hard disks. Using Synology drives instead of Seagate Exos Enterprise drives means to threw up 10 000 $ or more.Dell plays that sort of limitation more than ten years ago and it was my main reason to move to Synology. Just two years ago, during their annual public show, Synology had close partnership with both Seagate and Western Digital. Now they rebrand Hitachi drives with a label and a dedicated firmware and add 30% to the list price.For those who have warning messages while using other drives, you can hack a file inside the DSM to remove the locks. Otherwise, you are not able to monitor temperature, bad sectors and so on.Hope this helps.
| General | |
| Device Type | NAS server |
| Host Connectivity | Gigabit Ethernet / 10 Gigabit Ethernet |
| Enclosure Type | Rack-mountable - 3U |
| Total Storage Capacity | 0 GB |