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Synology RackStation RS4021xs+, 16-Bay 3U Ultra-High Performance NAS Server, Intel Xeon D-1541 8C/16T Upto 2.7 GHz, 16GB ECC DDR4 (64GB Max), )2x 10GbE, 4x 1GbE, 2x USB 3.2, 2x Expansion Port, Dual Redundant Power Supplies, 5 Years Warrant

PB Tech price
PB Tech price
$ 12,440 .48
 +GST
$ 14,306 .55
 inc GST
$12,440.48  +GST
$14,306.55

Synology RackStation RS4021xs+, 16-Bay 3U Ultra-High Performance NAS Server, Intel Xeon D-1541 8C/16T Upto 2.7 GHz, 16GB ECC DDR4 (64GB Max), )2x 10GbE, 4x 1GbE, 2x USB 3.2, 2x Expansion Port, Dual Redundant Power Supplies, 5 Years Warrant

  • Brand: Synology
  • MPN: RS4021xs+
  • Part #: NASSYN40218
  • UPC: 846504004089
PB Tech price
$ 12,440 .48 $ 14,306 .55
 +GST  inc GST

No store stock available.

Click & Collect: Select your store to check availability
Delivery: Order now and it ships on 29 Oct When will I receive it?
$12,440.48  +GST
$14,306.55

Finance from $123.63 per week*

Get what you want at a price you can afford. Choose a finance term below to see the weekly repayment amount and apply online during checkout or in-store.

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*Weekly payments are indicative only and based on a retail price of over a loan term of months at an interest rate of % p.a. and include a monthly service fee and a establishment fee (excludes optional Payment Protection Insurance).The total amount payable over the term of the loan is . Details of finance (including weekly payments, the total amount repayable over the term of the loan, interest rate and any applicable fees) can be confirmed with a detailed quote. Full disclosure of all of the terms of your finance will also be provided to you in the Finance Now disclosure statement for your consideration prior to confirmation of your purchase. All finance is subject to Finance Now terms and conditions and approval criteria.

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24 months interest FREE available*

Q Card / Mastercard is your perfect shopping partner, combining the benefits of a credit card with the added ability to access a range of interest-free deals and payment holidays.

Learn more about Q Mastercard, apply online for one now, or email [email protected] to chat with our team.

*12 Months No Payments & No Interest (“Payment Holiday”) is available on Long Term Finance (LTF) for in-store & online purchases. Min Spend $200. Lending criteria, $50 annual Account Fee, fees, Ts&Cs apply. $55 Establishment Fee applies to your first LTF transaction, $35 Advance Fee applies to subsequent LTF transactions. Standard Interest Rate currently 28.95% p.a. applies at the end of LTF Interest Free Period. Rates and fees correct as at date of publication, subject to change. Other interest rates and fees may apply. See qcard.co.nz for full details. Credit provided by Columbus Financial Services Limited. Excludes vouchers, gift cards, software licenses, game activation codes, pre-orders, Customized-to-Order (CTO) Apple Mac, and backorders.

*See here for full T&C

  • Brand: Synology
  • MPN: RS4021xs+
  • Part #: NASSYN40218
  • UPC: 846504004089

HDD Included

None

Number of Bays

16 Bays

Form Factor

3U Rackmount

Number of Cores

8

Processor Speed

2100Mhz

Memory Size

16GB

1Gb RJ45 Ports

4 Ports

10Gb RJ45 Ports

2 Ports

Features

 

Synology Brand HDD Recommended to Support SMART Monitoring 

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.

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. AES-256 encryption keeps locally-stored footage secure.Access recordings and live streams whenever you want using a web browser, desktop client, or the DS cam mobile app.Email, SMS, or push notifications alert you when incidents occur or predefined conditions are met.

Specifications

CPU

CPU Model

Intel Xeon D-1541

CPU Architecture

64-bit

CPU Frequency

8-core 2.1 (base) / 2.7 (turbo) GHz

Memory

System Memory

16 GB DDR4 ECC UDIMM

Memory Module Pre-installed

16 GB (16 GB x 1)

Total Memory Slots

4

Maximum Memory Capacity

64 GB (16 GB x 4)

Storage

Drive Bays

16

Maximum Drive Bays with Expansion

Unit 40 (RX1217/RX1217RP x 2)

Compatible Drive Type* (See all supported drives) 

3.5" SATA HDD
2.5" SATA SSD

Maximum Single Volume Size* 

1 PB (64 GB memory required, for RAID 6 groups only)
200 TB (32 GB memory required)
108 TB

External Ports

RJ-45 1GbE LAN Port 4 (with Link Aggregation / Failover support)
RJ-45 10GbE LAN Port 2 (with Link Aggregation / Failover support)

USB 3.2 Gen 1 Port

2

Expansion Port

2

PCIe

PCIe Expansion

2 x Gen3 x8 slots (x8 link)

File System

Internal Drives 

Btrfs
EXT4

External Drives 

Btrfs
EXT4
EXT3
FAT
NTFS
HFS+
exFAT

Appearance

Form Factor (RU)

3U

Size (Height x Width x Depth)

132.3 mm x 482 mm x 656.5 mm

Weight

17.4 kg

Rack Installation Support

4-post 19" rack (Synology Rail Kit - RKS-02)
4-post 19" rack (Synology Rail Kit - RKS1317)

Others

System Fan

80 mm x 80 mm x 3 pcs

Fan Speed Mode 

Full-Speed Mode
Cool Mode
Quiet Mode

Noise Level

44.7 dB(A)

Power Supply Unit / Adapter

800 W

AC Input Power Voltage

100 V to 240 V AC

Power Frequency

50/60 Hz, Single Phase

Power Consumption

145.79 W (Access)
62.68 W (HDD Hibernation)

British Thermal Unit

497.14 BTU/hr (Access)
213.74 BTU/hr (HDD Hibernation)

Temperature

Operating Temperature

0°C to 35°C (32°F to 95°F)

Storage Temperature

-20°C to 60°C (-5°F to 140°F)

Relative Humidity

5% to 95% RH

Certification

FCC
CE
BSMI
VCCI
RCM
EAC
CCC
KC
UL

Manufacturer Part No:
RS4021xs+
Brand:
Product Type:
-
UPC
846504004089
Product Family:
RackStation
Shipping Weight:
19 kg
PB Part No:
NASSYN40218
Product Model:
RS4021xs+,
Warranty: 60 months *
* Warranty period is as stated above unless the manufacturer has chosen to specify a longer period.
All warranties are return to base unless otherwise specified.

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Accessories

Delivery & Pick-up

Potential courier delays: Please note that due to the high volumes currently within the NZ courier network there is potential for some deliveries to be delayed.

Delivery Estimates

The estimated time to ship for each product we sell is detailed on the individual product page just underneath the price. From when your items ship, products typically arrive within 1-2 working days for North Island deliveries and 2-3 working days for South Island deliveries. Rural deliveries may take an extra working day. Bulk & hazard deliveries may take an extra 2-4 working days.

Next Day Delivery

Need your order in a hurry? PB Tech offers next day delivery for local Auckland addresses. Simple place your order before 4pm (provided your items are in stock) and select our next day delivery option in the checkout. T&C's apply. Learn more about Next Day Delivery.

Same Day Delivery

Need your order in a hurry? PB Tech offers same day delivery for Auckland, Hamilton, Wellington and Christchurch. Simple place your order before 1pm (provided your items are in stock) and select one of our same day delivery options 'Evening Delivery' or 'Urgent 3-hour Delivery' in the checkout. T&C's apply. Learn more about Same Day Delivery.

Shipping Costs

Shipping costs vary based on your location and the items being shipped and in some cases shipping may even be FREE.

To calculate what the shipping costs will be for your order, add the items you are interested in to your cart, view the Shopping Cart page, and select your 'Delivery Area' to calculate the shipping cost.

Shipping Security & Insurance

All orders shipped by PB Tech are sent via a courier with a signature required for each delivery. In some cases, and only where you have given the courier company permission to leave orders at a designated location, your order may be delivered without requiring a signature. All orders sent by PB Tech are fully insured in the unlikely event that your item(s) are damaged or go missing in transit.

1 Hour Store Pick-up / Click & Collect

You can pick-up your online order from any of our stores nationwide. You can select which store you want to pick up from at the checkout. Provided the store you select has stock and there's no hold-ups with payment we will have your order ready within 1 hour (during normal trading hours for that store) otherwise it may take up to 5 working days to transfer the stock to the store so your order can be fulfilled. Learn more about our Click & Collect process.

Overseas Shipments

PB Tech regularly ships overseas to Australia and beyond. If you are located in Australia, you can order directly from our Australian site www.pbtech.com/au. If you are from another country you can order from www.pbtech.com

Returns & Warranty

7 day right of exchange

If you change your mind after making a purchase, or realise you have ordered the incorrect item, you can enjoy the peace of mind that we offer a 7 day exchange policy.

To exchange a product, goods must be sealed and unopened, with packaging in original condition, accompanied by a valid receipt dated no more than 7 calendar days from when you request an exchange. A 20% restocking fee may be applied where goods are not returned in sealed, original packaging condition.

If there is not a suitable product that can be exchanged for your returned item you will be offered a credit on your account or gift card based on the value paid at the time of purchase. Items purchased on finance cannot be exchanged for a gift card.

 

Hassle free warranty service

If your product develops a fault within the manufacturer warranty period, you can either contact the manufacturer directly (some manufacturers provide a high level of warranty service - including free pickup or in some cases onsite repair), or return to one of our services centres / stores. Where the product has been directly imported by PB Tech, you need to contact us directly or present the product at any one of our service centres / stores together with your proof of purchase.

If your product develops a fault outside of the manufacturer warranty or PB Tech warranty period, we offer a full repair service and are an authorised repair agent for leading brands such as Samsung, HP, Toshiba, Lenovo and more.

 

Returning a product / making a warranty claim

To contact the manufacturer directly to troubleshoot your product or to request a warranty repair, please view the list of manufacturer / brand warranty contacts (for products imported directly by PB Tech please return to us directly by completing our request a return form).

To return a product to PB Tech directly, please complete our request a return form.

Or view our returns policy for more information.

Synology RackStation RS4021xs+, 16-Bay 3U Ultra-High Performance NAS Server, Intel Xeon D-1541 8C/16T Upto 2.7 GHz, 16GB ECC DDR4 (64GB Max), )2x 10GbE, 4x 1GbE, 2x USB 3.2, 2x Expansion Port, Dual Redundant Power Supplies, 5 Years Warrant

  • Brand: Synology
  • MPN: RS4021xs+
  • Part #: NASSYN40218
  • UPC:846504004089
PB Tech price $12,440.48 Excluding GST PB Tech price $14,306.55 Including GST

Date Created: 12:51, 17-09-2025
Product URL: https://www.pbtech.co.nz/product/NASSYN40218/Synology-RackStation-RS4021xs-16-Bay-3U-Ultra-High
Branch New Stock On Display
Auckland - Albany -
Auckland - Glenfield -
Auckland - Queen Street -
Auckland - Auckland Uni -
Auckland - Newmarket -
Auckland - Westgate -
Auckland - Penrose -
Auckland - Henderson (Express) -
Auckland - St Lukes -
Auckland - Manukau -
Hamilton -
Tauranga -
New Plymouth -
Palmerston North -
Petone -
Wellington -
Auckland - Head Office -
Auckland - East Tamaki Warehouse -
Christchurch - Hornby -
Christchurch - Christchurch Central -
Dunedin -

Features

 

Synology Brand HDD Recommended to Support SMART Monitoring 

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.

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. AES-256 encryption keeps locally-stored footage secure.Access recordings and live streams whenever you want using a web browser, desktop client, or the DS cam mobile app.Email, SMS, or push notifications alert you when incidents occur or predefined conditions are met.

Specifications

CPU

CPU Model

Intel Xeon D-1541

CPU Architecture

64-bit

CPU Frequency

8-core 2.1 (base) / 2.7 (turbo) GHz

Memory

System Memory

16 GB DDR4 ECC UDIMM

Memory Module Pre-installed

16 GB (16 GB x 1)

Total Memory Slots

4

Maximum Memory Capacity

64 GB (16 GB x 4)

Storage

Drive Bays

16

Maximum Drive Bays with Expansion

Unit 40 (RX1217/RX1217RP x 2)

Compatible Drive Type* (See all supported drives) 

3.5" SATA HDD
2.5" SATA SSD

Maximum Single Volume Size* 

1 PB (64 GB memory required, for RAID 6 groups only)
200 TB (32 GB memory required)
108 TB

External Ports

RJ-45 1GbE LAN Port 4 (with Link Aggregation / Failover support)
RJ-45 10GbE LAN Port 2 (with Link Aggregation / Failover support)

USB 3.2 Gen 1 Port

2

Expansion Port

2

PCIe

PCIe Expansion

2 x Gen3 x8 slots (x8 link)

File System

Internal Drives 

Btrfs
EXT4

External Drives 

Btrfs
EXT4
EXT3
FAT
NTFS
HFS+
exFAT

Appearance

Form Factor (RU)

3U

Size (Height x Width x Depth)

132.3 mm x 482 mm x 656.5 mm

Weight

17.4 kg

Rack Installation Support

4-post 19" rack (Synology Rail Kit - RKS-02)
4-post 19" rack (Synology Rail Kit - RKS1317)

Others

System Fan

80 mm x 80 mm x 3 pcs

Fan Speed Mode 

Full-Speed Mode
Cool Mode
Quiet Mode

Noise Level

44.7 dB(A)

Power Supply Unit / Adapter

800 W

AC Input Power Voltage

100 V to 240 V AC

Power Frequency

50/60 Hz, Single Phase

Power Consumption

145.79 W (Access)
62.68 W (HDD Hibernation)

British Thermal Unit

497.14 BTU/hr (Access)
213.74 BTU/hr (HDD Hibernation)

Temperature

Operating Temperature

0°C to 35°C (32°F to 95°F)

Storage Temperature

-20°C to 60°C (-5°F to 140°F)

Relative Humidity

5% to 95% RH

Certification

FCC
CE
BSMI
VCCI
RCM
EAC
CCC
KC
UL

Date Created: 12:51, 17-09-2025
Product URL: https://www.pbtech.co.nz/product/NASSYN40218/Synology-RackStation-RS4021xs-16-Bay-3U-Ultra-High