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Synology RackStation RS4021xs+


Our compact 2U, 8-bay rackmount for small- and medium-sized businesses.

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28.372,50 lei

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.

SKU: RS4021xs+ Categorii: , , ,

 

CPU
CPU Model Intel Xeon D-1541
CPU Quantity 1
CPU Architecture 64-bit
CPU Frequency 8-core 2.1 (base) / 2.7 (turbo) GHz
Hardware Encryption Engine (AES-NI)
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)
Notes
  • Synology reserves the right to replace memory modules with the same or higher frequency based on supplier’s product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
  • For more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.
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
Hot Swappable Drive*
Notes
  • Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability.
  • “Compatible drive type” indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
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
Notes The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.
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
Notes exFAT Access can be installed for free from Package Center in DSM 7.0. In DSM 6.2 or earlier versions, exFAT Access needs to be purchased in Package Center.
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)
Notes The rail kit is sold separately
Others
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
550 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)
Notes
  • Power supply specifications may differ based on the hardware revision of the device. For more information, refer to the Product Change Notice.
  • Power consumption is measured when it is fully loaded with Synology 8TB HAT5300-8T hard drive(s).
  • Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
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
Warranty
5 Years
Notes The warranty period starts from the purchase date as stated on your purchase receipt.
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: SAT5210
  • M.2 SSD & 10GbE Combo Adapter Card: E10M20-T1
  • M.2 SSD Adapter Card: M2D20
  • 25GbE Network Interface Card: E25G21-F2
  • 10GbE Network Interface Card: E10G21-F2/E10G18-T2/E10G18-T1
  • Rail Kit Sliding: RKS-02
  • VisualStation: VS360HD
  • Surveillance Device License Pack
Notes All memory modules will operate at the maximum frequency specified by the CPU manufacturer.

 

 

DSM Specifications
Storage Management

Maximum Single Volume Size*

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

Maximum Internal Volume Number256 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

Notes

  • Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored.
  • On Peta Volume enabled volumes, Snapshot Replication, SSD caching, shared folder encryption, and compression will not be available.
  • Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration.
  • Each internal volume (may consist of multiple drives) is expandable up to 108 TB (with memory less than 32 GB) or 200 TB (with memory equal to or greater than 32 GB).
File Services

File ProtocolSMB/AFP/NFS/FTP/WebDAV Maximum Concurrent SMB/AFP/FTP Connections4,000 Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion)10,000 Windows Access Control List (ACL) Integration  NFS Kerberos Authentication  Notes

  • Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
  • During testing, the maximum number of SSDs supported by this model is installed in a RAID 5 configuration.
  • The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed.
Account & Shared Folder

Maximum Local User Accounts16,000 Maximum Local Groups512 Maximum Shared Folder512 Maximum Shared Folder Sync Tasks32

Hybrid Share

Maximum Hybrid Share Folders15 Notes.

High Availability

Synology High Availability

Log Center

Syslog Events per Second3,000

Virtualization

VMware vSphere with VAAI  Windows Server 2016  Windows Server 2019  Citrix Ready  OpenStack

General Specifications

Networking ProtocolsSMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, Fibre Channel, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV Supported Browsers

  • Google Chrome
  • Firefox
  • Microsoft Edge
  • Safari

Supported LanguageEnglish, 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 NotesFor an updated list of supported browser versions, check the DSM Technical Specifications.

Add-on Packages view the complete package list
Antivirus by McAfee (Trial)

 

Central Management System

 

Synology Chat

Maximum Users6,000 Maximum Number of Concurrent Users500 NotesWhen applicable, systems are tested configured with maximum memory and set to allow the maximum number of connections.

Document Viewer

 

Download Station

Maximum Concurrent Download Tasks80

SAN Manager

Maximum iSCSI Target Number256 Maximum LUN512 LUN Clone/Snapshot, Windows ODX  NotesiSCSI Manager has been renamed to SAN Manager in DSM 7.0.

Synology MailPlus / MailPlus Server

Free Email Accounts5 (Licenses required for additional accounts) Maximum Number of Concurrent Users1,100 Maximum Server Performance4,312,000 emails per day, approx. 131GB Notes

  • Models with more than 4 bays were installed with two SSDs for SSD cache.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • The performance of the mail system will slightly decrease in high-availability mode due to data synchronization between the two servers.
  • Functions that were enabled in all of the tests above: anti-spam, anti-virus, DNSBL, greylist, content scan, full-text search (English only).
Media Server

DLNA Compliance

Synology Photos

Facial Recognition

Snapshot Replication

Maximum Snapshots per Shared Folder1,024 Maximum of System Snapshots65,536

Surveillance Station

Maximum IP cam (Licenses required)90 (including 2 Free License) (see all supported IP cameras) Total FPS (H.264)2700 FPS @ 720p (1280×720)
2250 FPS @ 1080p (1920×1080)
1500 FPS @ 3M (2048×1536)
900 FPS @ 5M (2591×1944)
550 FPS @ 4K (3840×2160) Total FPS (H.265)2700 FPS @ 720p (1280×720)
2700 FPS @ 1080p (1920×1080)
2250 FPS @ 3M (2048×1536)
1500 FPS @ 5M (2591×1944)
1080 FPS @ 4K (3840×2160) Notes

  • Maximum IP cameras and FPS figures are tested with the device fully populated with drives and under a continuous recording setup.
  • Actual system capabilities may differ depending on system configuration, drive performance, number of features enabled, and if additional workloads are present.
Synology Drive

Recommended Number of Concurrent Sync Clients2,000 (the number of connections that can be maintained when the recommended number of hosted files was reached) Recommended Number of Hosted Files50,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) Notes

  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • Utilizing SSD cache can significantly improve performance.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office

Maximum Users3,000 Notes

  • Multiple files were opened for testing and each file was edited by 30 users simultaneously.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
Video Station

 

Virtual Machine Manager

Recommended Virtual Machine Instances16. Recommended Virtual DSM Number (Licenses required)16 (including 1 Free License) NotesThe specifications vary depending on system configuration and memory size.

VPN Server

Maximum Connections 60

 

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