Best 12-bay NAS -Comparison results
CPU | ||||
CPU Model | Intel Atom C3538 | Intel Xeon D-1527 | Intel Xeon D-1531 | AMD Ryzen V1500B |
CPU Quantity | 1 | 1 | 1 | 1 |
CPU Architecture | 64-bit | 64-bit | 64-bit | 64-bit |
CPU Frequency | 4-core 2.1 GHz | 4-core 2.2 (base) / 2.7 (turbo) GHz | 6-core 2.2 (base) / 2.7 (turbo) GHz | 4-core 2.2 GHz |
Hardware Encryption Engine (AES-NI) | ||||
Memory | ||||
System Memory | 4 GB DDR4 non-ECC SODIMM | 16 GB DDR4 ECC SODIMM | 16 GB DDR4 ECC SODIMM | 4 GB DDR4 ECC SODIMM |
Memory Module Pre-installed | 4 GB (4 GB x 1) | 16 GB (8 GB x 2) | 16 GB (8 GB x 2) | 4 GB (4 GB x 1) |
Total Memory Slots | 2 | 4 | 4 | 2 |
Maximum Memory Capacity | 32 GB (16 GB x 2) | 48 GB (16 GB + 16 GB x 2) | 48 GB (8 GB x 2 + 16 GB x 2) | 32 GB (16 GB x 2) |
Notes |
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Storage | ||||
Drive Bays | 12 | 12 | 12 | 12 |
Maximum Drive Bays with Expansion Unit | 24 (DX1215/DX1215II x 1) | 36 (DX1215/DX1215II x 2) | 36 (DX1222 x 2) | 24 (DX1222 x 1) |
Compatible Drive Type* (See all supported drives) |
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Maximum Single Volume Size* | 108 TB |
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108 TB |
Hot Swappable Drive | ||||
Notes |
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External Ports | ||||
RJ-45 1GbE LAN Port | 4 (with Link Aggregation / Failover support) | 4 (with Link Aggregation / Failover support) | ||
RJ-45 1GbE LAN Port* | 2 (with Link Aggregation / Failover support) | 4 (with Link Aggregation / Failover support) | ||
RJ-45 10GbE LAN Port | 2 (with Link Aggregation / Failover support) | |||
Management LAN Port | 1 | |||
USB 3.2 Gen 1 Port* | 2 | 2 | 2 | 2 |
Expansion Port | 1 | 2 | 2 | 1 |
Notes | The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019. | The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019. |
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PCIe | ||||
PCIe Expansion | 1 x Gen3 x8 slot (black, x4 link) | 1 x Gen3 x8 slot (x8 link) | 1 x Gen3 x8 slot (x8 link) | 1 x Gen3 x8 slot (x4 link) |
File System | ||||
Internal Drives |
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External Drives |
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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. | 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. | 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. | 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 | ||||
Size (Height x Width x Depth) | 270 mm x 300 mm x 340 mm | 270 mm x 300 mm x 340 mm | 270 mm x 300 mm x 340 mm | 270 mm x 300 mm x 340 mm |
Weight | 9.5 kg | 9.8 kg | 9.8 kg | 9.5 kg |
Others | ||||
System Fan | 120 mm x 120 mm x 2 pcs | 120 mm x 120 mm x 2 pcs | 120 mm x 120 mm x 2 pcs | 120 mm x 120 mm x 2 pcs |
Fan Speed Mode |
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Easy Replacement System Fan | ||||
Power Recovery | ||||
Noise Level* | 22.3 dB(A) | 22.3 dB(A) | 25 dB(A) | 25 dB(A) |
Scheduled Power On / Off | ||||
Wake on LAN / WAN | ||||
Power Supply Unit / Adapter | 550 W | 550 W | 550 W | 550 W |
AC Input Power Voltage | 100 V to 240 V AC | 100 V to 240 V AC | 100 V to 240 V AC | 100 V to 240 V AC |
Power Frequency | 50/60 Hz, Single Phase | 50/60 Hz, Single Phase | 50/60 Hz, Single Phase | 50/60 Hz, Single Phase |
Power Consumption* | 101.6 W (Access) 43.96 W (HDD Hibernation) |
108.2 W (Access) 53.4 W (HDD Hibernation) |
94.42 W (Access) 54.33 W (HDD Hibernation) |
73.11 W (Access) 32.12 W (HDD Hibernation) |
British Thermal Unit | 346.9 BTU/hr (Access) 149.90 BTU/hr (HDD Hibernation) |
368.96 BTU/hr (Access) 182.09 BTU/hr (HDD Hibernation) |
322.39 BTU/hr (Access) 185.51 BTU/hr (HDD Hibernation) |
249.63 BTU/hr (Access) 109.67 BTU/hr (HDD Hibernation) |
Notes |
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Temperature | ||||
Operating Temperature | 0°C to 40°C (32°F to 104°F) | 5°C to 40°C (40°F to 104°F) | 0°C to 40°C (32°F to 104°F) | 0°C to 40°C (32°F to 104°F) |
Storage Temperature | -20°C to 60°C (-5°F to 140°F) | -20°C to 60°C (-5°F to 140°F) | -20°C to 60°C (-5°F to 140°F) | -20°C to 60°C (-5°F to 140°F) |
Relative Humidity | 5% to 95% RH | 5% to 95% RH | 5% to 95% RH | 5% to 95% RH |
Certification |
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Warranty | 3-year hardware warranty, extendable to 5-year coverage – EW202 | 5 Years | 5 Years | 3-year hardware warranty, extendable to 5-year coverage – EW202 |
Notes | The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) | The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) | The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) | The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) |
Environment | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant |
Packaging Content |
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Optional Accessories |
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Notes |
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All memory modules will operate at the maximum frequency specified by the CPU manufacturer. | All memory modules will operate at the maximum frequency specified by the CPU manufacturer. | All memory modules will operate at the maximum frequency specified by the CPU manufacturer. |
Storage Management | ||||
Maximum Internal Volume Number | 64 | 128 | 256 | 64 |
SSD Read / Write Cache (White Paper) | ||||
SSD TRIM | ||||
RAID Group | ||||
Supported RAID Type |
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RAID Migration |
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Volume Expansion with Larger HDDs |
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Volume Expansion by Adding a HDD |
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Global Hot Spare Supported RAID Type |
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File Services | ||||
File Protocol | SMB/AFP/NFS/FTP/WebDAV | SMB/AFP/NFS/FTP/WebDAV | SMB/AFP/NFS/FTP/WebDAV | SMB/AFP/NFS/FTP/WebDAV |
Maximum Concurrent SMB/AFP/FTP Connections | 1,000 | 2,000 | 4,000 | 1,000 |
Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion) | 2,000 | 10,000 | 10,000 | 2,000 |
Windows Access Control List (ACL) Integration | ||||
NFS Kerberos Authentication | ||||
Notes |
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Account & Shared Folder | ||||
Maximum Local User Accounts | 2,048 | 16,000 | 16,000 | 2,048 |
Maximum Local Groups | 256 | 512 | 512 | 256 |
Maximum Shared Folder | 512 | 512 | 512 | 512 |
Maximum Shared Folder Sync Tasks | 16 | 32 | 32 | 16 |
Hybrid Share | ||||
Hybrid Share Folder Number | 4 | 8 | 8 | 4 |
Notes | For more supported details, please check this article. | For more supported details, please check this article. | For more supported details, please check this article. | For more supported details, please check this article. |
High Availability | ||||
Synology High Availability | ||||
Log Center | ||||
Syslog Events per Second | 1,000 | 3,000 | 3,000 | 1,000 |
Virtualization | ||||
VMware vSphere with VAAI | ||||
Windows Server 2016 | ||||
Windows Server 2019 | ||||
Citrix Ready | ||||
OpenStack | ||||
General Specifications | ||||
Networking Protocols | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, Fibre Channel, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, Fibre Channel, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV |
Supported Browsers |
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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 | 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 | 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 | 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 |
Notes | For an updated list of supported browser versions, check the DSM Technical Specifications. | For an updated list of supported browser versions, check the DSM Technical Specifications. | For an updated list of supported browser versions, check the DSM Technical Specifications. | For an updated list of supported browser versions, check the DSM Technical Specifications. |
Antivirus by McAfee (Trial) | ||||
Central Management System | ||||
Synology Chat | ||||
Maximum Users | 1,500 | 4,000 | 4,000 | 1,500 |
Notes |
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Document Viewer | ||||
Download Station | ||||
Maximum Concurrent Download Tasks | 80 | 80 | 80 | 80 |
SAN Manager | ||||
Maximum iSCSI Target Number | 128 | 256 | 256 | 128 |
Maximum LUN | 256 | 512 | 512 | 256 |
LUN Clone/Snapshot, Windows ODX | ||||
Notes | iSCSI Manager has been renamed to SAN Manager in DSM 7.0. | iSCSI Manager has been renamed to SAN Manager in DSM 7.0. | ||
Synology MailPlus / MailPlus Server | ||||
Free Email Accounts | 5 (Licenses required for additional accounts) | 5 (Licenses required for additional accounts) | 5 (Licenses required for additional accounts) | 5 (Licenses required for additional accounts) |
Maximum Number of Concurrent Users | 150 | 450 | 800 | 150 |
Maximum Server Performance | 1,484,000 emails per day, approx. 45 GB | 3,363,000 emails per day, approx. 102GB | 4,235,000 emails per day, approx. 129 GB | 1,484,000 emails per day, approx. 45 GB |
Notes |
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Media Server | ||||
DLNA Compliance | ||||
Synology Photos | ||||
Facial Recognition | ||||
Notes | Photo Station and Synology Moments are succeeded by Synology Photos in DSM 7.0. For a features comparison, check this article. | Photo Station and Synology Moments are succeeded by Synology Photos in DSM 7.0. For a features comparison, check this article. | ||
PetaSpace | ||||
Snapshot Replication | ||||
Maximum Snapshots per Shared Folder | 1,024 | 1,024 | 1,024 | 1,024 |
Maximum of System Snapshots | 65,536 | 65,536 | 65,536 | 65,536 |
Surveillance Station | ||||
Maximum IP cam (Licenses required) | 40 (including 2 Free License) (See All Supported IP Cameras) | 75 (including 2 Free License) (See All Supported IP Cameras) | 90 (including 2 Free License) (See All Supported IP Cameras) | 40 (including 2 Free License) (See All Supported IP Cameras) |
Total FPS (H.264) | 1200 FPS @ 720p (1280×720) 960 FPS @ 1080p (1920×1080) 520 FPS @ 3M (2048×1536) 320 FPS @ 5M (2591×1944) 240 FPS @ 4K (3840×2160) |
2250 FPS @ 720p (1280×720) 1050 FPS @ 1080p (1920×1080) 600 FPS @ 3M (2048×1536) 500 FPS @ 5M (2591×1944) 500 FPS @ 4K (3840×2160) |
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) |
1200 FPS @ 720p (1280×720) 1050 FPS @ 1080p (1920×1080) 600 FPS @ 3M (2048×1536) 440 FPS @ 5M (2591×1944) 320 FPS @ 4K (3840×2160) |
Total FPS (H.265) | 1200 FPS @ 720p (1280×720) 1200 FPS @ 1080p (1920×1080) 880 FPS @ 3M (2048×1536) 520 FPS @ 5M (2591×1944) 400 FPS @ 4K (3840×2160) |
2250 FPS @ 720p (1280×720) 2250 FPS @ 1080p (1920×1080) 2250 FPS @ 3M (2048×1536) 1875 FPS @ 5M (2591×1944) 975 FPS @ 4K (3840×2160) |
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) |
1200 FPS @ 720p (1280×720) 1200 FPS @ 1080p (1920×1080) 1120 FPS @ 3M (2048×1536) 600 FPS @ 5M (2591×1944) 480 FPS @ 4K (3840×2160) |
Total FPS (MJPEG) | 560 FPS @ 720p (1280×720) 270 FPS @ 1080p (1920×1080) 190 FPS @ 3M (2048×1536) 110 FPS @ 5M (2591×1944) |
900 FPS @ 720p (1280×720) 450 FPS @ 1080p (1920×1080) 280 FPS @ 3M (2048×1536) 200 FPS @ 5M (2591×1944) |
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Synology Drive | ||||
Recommended Number of Hosted Files | 50,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) | 50,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) | 50,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) | 50,000,000 (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 | 550 (the number of connections that can be maintained when the recommended number of hosted files was reached) | 1,800 (the number of connections that can be maintained when the recommended number of hosted files was reached) | 1,800 (the number of connections that can be maintained when the recommended number of hosted files was reached) | 550 (the number of connections that can be maintained when the recommended number of hosted files was reached) |
Notes |
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Synology Office | ||||
Maximum Users | 1,800 | 2,900 | 2,900 | 1,800 |
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Video Station | ||||
Virtual Machine Manager | ||||
Recommended Virtual Machine Instances | 4 (Learn more) | 8 (Learn more) | 12 (Learn more) | 8 (Learn more) |
Recommended Virtual DSM Number (Licenses required) | 4 (including 1 Free License) | 8 (including 1 Free License) | 12 (including 1 Free License) | 8 (including 1 Free License) |
Notes | The specifications vary depending on system configuration and memory size. | The specifications vary depending on system configuration and memory size. | The specifications vary depending on system configuration and memory size. | The specifications vary depending on system configuration and memory size. |
VPN Server | ||||
Maximum Connections | 40 | 60 | 60 | 40 |
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