Мрежови диск (NAS) Synology RS4021XS+, осемядрен Intel Xeon D-1541 2.1/2.7 GHz, без твърд диск (16x SATA 6Gb/s), 16GB DDR4, 4x 10/100/1000

Synology RS4021XS+

CPU
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): V

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
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 on the recommended memory configurations, visit here.
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.

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*
200 TB (32 GB RAM required, for RAID 5 or RAID 6 groups only)
108 TB

Hot Swappable Drive: V

Notes
Storage Pool and volume creation require all drives to be listed as compatible on the device model's compatibility list.
"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.
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).

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 is purchased separately 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 - RKS1317)

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: V
Power Recovery: V
Noise Level*: 44.7 dB(A)
Scheduled Power On / Off: V
Wake on LAN / WAN: V
Power Supply Unit / Adapter: 800 W
Redundant Power Supply: V
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 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


DSM Specifications
Storage Management
Maximum Internal Volume Number: 256
SSD Read / Write Cache (White Paper): V
SSD TRIM: V
RAID Group: V
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 Services
File Protocol: CIFS/AFP/NFS/FTP/WebDAV
Maximum Concurrent CIFS/AFP/FTP Connections: 4,000
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) 10,000
Windows Access Control List (ACL) Integration: V
NFS Kerberos Authentication: V

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.




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