Best RS4021xsplus price

Last updated on 28 Jan 2021 📧 Subscribe

Synology RS4021xs+

 

Who Offers the Best Price and Service for the Synology RS4021xs+ NAS?



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Synology DS925+ NAS Amazon usa USA 14% OFF, NOW $552.99 bf2025 [LINK]
Synology DS925+ NAS Amazon UK UK 15% OFF, NOW £472 inc.TAX [LINK]
Synology DS1525+ NAS B&H usa USA $160 OFF, NOW $639.99 [LINK]
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Synology DS1525+ NAS Amazon usa USA REDUCED TO $691.49 (15% OFF) bf2025 [LINK]
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Synology - DDR4 - module - 16 GB - DIMM 288-pin - 2666 MHz / PC4-21300 - 1.2 V - Amazon UK UK 7.96 OFF (WAS 128) [LINK]
Synology 2-Bay NAS DS225+ (Diskless) Amazon UK UK 38 OFF (WAS 320) [LINK]
Synology 16 GB DDR4 memory expansion for DS3622xs+, DS2422+ Amazon UK UK 33.84 OFF (WAS 390) [LINK]
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Synology DS223 8TB 2 Bay Desktop NAS Solution installed with 2 x 4TB Western Dig Amazon UK UK 31.41 OFF (WAS 582) [LINK]
Synology 5-Bay Expandable NAS Kit, DS1525+ AMD RyzenCPU with 8GB Memory, 2.5GbE Amazon UK UK 6 OFF (WAS 729) [LINK]
Synology 8 Bay RackStation RS1221+ (Diskless) Amazon UK UK 44.18 OFF (WAS 1084) [LINK]
Synology DS925+ 16TB (Synology HAT33) 4Bay Desktop NAS Amazon UK UK 109.11 OFF (WAS 1224) [LINK]
Synology 4-Bay RackStation RS822RP+ (Diskless) Amazon UK UK 36.61 OFF (WAS 1273) [LINK]
Synology DS1823xs+ 8 Bay NAS Desktop: High-Performance Storage Solution Amazon UK UK 21.91 OFF (WAS 1894) [LINK]
Synology RS2423+ 12 Bay Rack NAS Storage Solution Amazon UK UK 28.22 OFF (WAS 2012) [LINK]
Synology Diskstation NAS DS1525+ Bundle 60TB Seagate (5X 12TB Ironwolf HDD) 5 Ba Amazon UK UK 10.43 OFF (WAS 3003) [LINK]
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Synology 12 bay RackStation RS3621xs+ (Diskless) Amazon UK UK 834.2 OFF (WAS 5232) [LINK]
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Synology RackStation RS3621xs+ NAS Rack (2U) Ethernet LAN Black D-1541, RS3621XS Amazon UK UK 121.57 OFF (WAS 12157) [LINK]
Synology 1-Bay DiskStation DS124 (Diskless) Amazon usa USA 29.06 OFF (WAS 169) [LINK]
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Synology 8 bay RackStation RS1221RP+ (Diskless) Amazon usa USA 6.06 OFF (WAS 1710) [LINK]
Synology 8 Bay RackStation RS1221RP+ (Diskless) & Rail Kit Sliding RKS-02 Amazon usa USA 6.06 OFF (WAS 1815) [LINK]
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Synology RX1223RP 12-Bay Redundant Power Expansion Unit (Diskless) Amazon usa USA 9.52 OFF (WAS 2157) [LINK]
Synology 12-Bay RackStation RS2423RP+ (Diskless) Amazon usa USA 41.81 OFF (WAS 2577) [LINK]
Synology 12 Bay DiskStation DS3622xs+ (Diskless) Amazon usa USA 7.67 OFF (WAS 3225) [LINK]
Synology 12 Bay Rack Expansion RX1222sas (Diskless) Amazon usa USA 17.09 OFF (WAS 3418) [LINK]
Synology 16 bay RackStation RS4021xs+ (Diskless) Amazon usa USA 31.6 OFF (WAS 6230) [LINK]
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Synology 24 Bay NAS FlashStation FS6400 (Diskless) Amazon usa USA 152.54 OFF (WAS 14323) [LINK]

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PERFORMANCE:
SpecsMeasureRS4021xs+
10GbE iSCSI Random IOPS 4KBRead IOPS/Write IOPS289854 / 146487
1GbE Web Server PHP Response EfficiencyResponses per second 116633
Aggregated 10GbE SMB Random IOPS 4KBWrite IOPS/Read IOPS153385 / 234698
Aggregated 10GbE SMB Sequential Throughput 64KBRead MBs/Write MBs6259 / 3135
Aggregated 10GbE SMB Sequential Throughput via Encrypted Shared Folder 64KBWrite MBs/Read MBs2149 / 4144
SpecsRS4021xs+

Specification:
SpecsValue
CPU-Model Intel Xeon D-1541
CPU Architecture 64-bit
CPU Frequency 8-core 2.1 (base) / 2.7 (turbo) GHz
Hardware Encryption Engine (AES-NI)
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)
Notes The specifications vary depending on system configuration and memory size.
Drive Bays 16
Maximum Drive Bays with Expansion Unit 40 (RX1217/RX1217RP x 2)
Maximum Single Volume Size*
  • 200 TB (32 GB RAM required, for RAID 5 or RAID 6 groups only)
  • 108 TB
Hot Swappable Drive
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 Expansion 2 x Gen3 x8 slots (x8 link)
Internal Drives
  • Btrfs
  • EXT4
External Drives
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
Form-Factor 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 - RKS1317)
System Fan 80 mm x 80 mm x 3 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
Power Recovery
Noise Level* 44.7 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 800 W
Redundant Power Supply
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)
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
Warranty 5 Years
Environment RoHS Compliant
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 2
  • Quick Installation Guide X 1
Optional Accessories
  • DDR4 ECC UDIMM: D4EC-2666-16G
  • Expansion Units: RX1217/RX1217RP
  • 3.5" SATA HDD: HAT5300
  • 2.5" SATA SSD: SAT5200
  • M.2 SSD & 10GbE Combo Adapter Card: E10M20-T1
  • M.2 SSD Adapter Card: M2D20
  • 10GbE Network Interface Card: E10G18-T2/E10G18-T1/E10G17-F2
  • Rail Kit Sliding: RKS1317
  • VisualStation: VS960HD/VS360HD
  • Surveillance Device License Pack
Maximum Internal Volume Number 256
SSD Read / Write Cache (White Paper)
SSD TRIM
RAID Group
Supported RAID Type
  • RAID F1
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RAID Migration
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
Volume Expansion with Larger HDDs
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Volume Expansion by Adding a HDD
  • RAID F1
  • JBOD
  • RAID 5
  • RAID 6
Global Hot Spare Supported RAID Type
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
File Protocol CIFS/AFP/NFS/FTP/WebDAV
Maximum Concurrent CIFS/AFP/FTP Connections 4,000
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Maximum Local User Accounts 16,000
Maximum Local Groups 512
Maximum Shared Folder 512
Maximum Shared Folder Sync Tasks 32
Synology High Availability
Log Center
Syslog Events per Second 3,000
VMware vSphere with VAAI
Windows Server 2016
Windows Server 2019
Citrix Ready
OpenStack
Networking Protocols SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
  • Google Chrome
  • Firefox
  • Microsoft Edge
  • Internet Explorer 10 onwards
  • Safari 10 onwards
  • Safari (iOS 10 onwards)
  • Google Chrome (Android 6.0 onwards)
Supported Language English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文
Antivirus by McAfee (Trial)
Central Management System
Synology Chat
Maximum Users 3,000
Document Viewer
Download Station
Maximum Concurrent Download Tasks 80
exFAT Access (Optional)
Maximum iSCSI Target Number 256
Maximum iSCSI LUN 512
iSCSI LUN Clone/Snapshot, Windows ODX
Synology MailPlus / MailPlus Server
Free Email Accounts 5 (Licenses required for additional accounts)
Maximum Number of Concurrent Users 1,100
Maximum Server Performance 4,312,000 emails per day, approx. 131GB
Media Server
DLNA Compliance
Moments
Facial Recognition
Subject Recognition
Auto Color & Rotate
Moments Select
Snapshot Replication
Maximum Snapshots per Shared Folder 1,024
Maximum of System Snapshots 65,536
Surveillance Station
Maximum IP cam (Licenses required) 90 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264) 2700 FPS @ 720p (1280x720)
2250 FPS @ 1080p (1920x1080)
1500 FPS @ 3M (2048x1536)
900 FPS @ 5M (2591x1944)
550 FPS @ 4K (3840x2160)
Total FPS (H.265) 2700 FPS @ 720p (1280x720)
2700 FPS @ 1080p (1920x1080)
2250 FPS @ 3M (2048x1536)
1500 FPS @ 5M (2591x1944)
1080 FPS @ 4K (3840x2160)
Synology Drive
Recommended Number of Hosted Files 5,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
Recommended Number of Concurrent Sync Clients 2,000 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Synology Office
Video Station
Virtual Machine Manager
Recommended Virtual Machine Instances 16 (Learn more)
VPN Server
Maximum Connections 40
SpecsValue
SOFTWARE - /10
HARDWARE - /10
PERFORMANCE - /10
PRICE - /10
VALUE - /10


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