Scalable high-density storage server for multi-petabyte applications
With 60 bays in a 4U rackmount enclosure and support for up to 300 drives after expansion, the Synology HD6500 is the ideal high-density storage solution for large-scale warm and cold storage applications such as full system backups, video post-production, and large surveillance deployments.
2 x 10-core Intel Xeon Silver
Over 6,688/6,662MB/s sequential read/write1
64 GB DDR4 ECC, expandable to 512 GB
Expand to 300 drives with four RX6022sas expansion units
The HD6500 is designed to scale up to 5 times in capacity with four additional RX6022sas expansion units. SAS multipath-enabled connectivity provides up to double the typical performance together and increased redundancy.
The HD6500 supports a large variety of networking interfaces, protocols, and configurations, whether you need fast sequential transfer, support for simultaneous connections, or high network redundancy.
Three Gigabit Ethernet and two 10GbE RJ-45 ports allow for rapid transfer speeds right out of the box.
Add extra 10GbE SFP+/RJ-45, 25GbE SFP28, or Fibre Channel ports in varying configurations by leveraging the four expansion slots.2
Bond multiple network interfaces with Link Aggregation to enable automatic network failover and load balancing.
Back up your backup solutions, bring all your files together in one place, or bring distributed surveillance deployments under central control.
Host and retrieve massive files from extensive archives whenever needed. Provide user friendly access and set up powerful cross-site syncing.
Synology Drive is a private cloud management and access solution that enables remote data access, synchronization, on-demand file restoration, and backup via desktop and mobile applications. Sync data between different platforms and devices, and access your organization’s files through mobile apps, desktop clients, and a browser-based interface. Set granular file and folder access and sharing permissions. Maintain a full overview of file activities and track file share settings changes with detailed records in the advanced Synology Drive Admin Console. Learn more
Leverage SMB or NFS shares to provide efficient access to company files over the local network or VPN. Manage data access privileges with access control lists (ACL) though Active Directory/LDAP integration and protect files against tampering or removal with built-in snapshot technology.
Make sure branches or teams always have up-to-date copies of crucial documents and data available locally by syncing folders one or two-way using Synology Drive ShareSync. Let your Synology systems update files across locations each time there is a change to efficiently keep all stakeholders on the same page. Learn more
Securely synchronize files and data from the HD6500 to Synology systems across different sites or offices, and back, by leveraging hybrid cloud technology with Synology Hybrid Share.3 Synchronize large sets of data to the cloud, and leverage the powerful bandwidth of our data centers to stream requested files to local NAS deployed at branch offices, no matter their size. Frequently used files are kept stored on local NAS to provide users access at LAN speeds and can also be pinned manually to prevent them from being removed from the cache. Learn more
Protect large numbers of PCs, servers, Synology systems, and hypervisors, or back up your backup servers with a central storage solution.
Use Hyper Backup to back up files, LUNs, installed applications, and system configurations from tens or hundreds of Synology servers to your HD6500. Set and forget backup tasks with regular schedules, enhance security with fine-grained user permissions and encryption, reduce backup sizes with built-in deduplication, and restore data flexibly with multi-versioning. Learn more
Snapshot Replication enables configurable point-in-time snapshots of shared folders and LUNs with an RPO as low as 5 minutes and recovery within seconds. Learn more
Centrally manage bare-metal backups of all your Synology servers from a single centralized console on your HD6500. Leverage built-in deduplication technology to reduce backup sizes and multi-versioning to allow flexible restoration.
Securely back up Windows clients and servers, Linux endpoints, Synology servers, and VMware® and Hyper-V® virtual machines to the HD6500 with Active Backup for Business. Coordinate all data protection from the centralized management console and choose between bare-metal or file-level restoration, while leveraging built-in deduplication technology to reduce backup sizes. Learn more
Protect full Microsoft 365 and Google Workspace accounts by maintaining complete offline copies of your crucial information and configurations with Active Backup for Microsoft 365 and Active Backup for Google Workspace.
Manage distributed deployments of hundreds of local recording servers and thousands of IP cameras centrally. Learn more
Connect up to 150 IP cameras4 from a selection of over 8,300 validated models to the HD6500 itself, or connect hundreds more by adding recording servers at the edge. Easily add storage as deployments grow.
Manage up hundreds of Synology NAS or NVR recording servers from one host, store copies of all or some recordings centrally, and monitor all streams from one interface with Surveillance Station Centralized Management System.
Admins can set detailed rules for who can check live streams or review recordings and footage can be protected against unauthorized access with industry-standard AES-256 encryption.
Watch and analyze live streams or recordings from web browsers, desktop clients, or mobile apps.
Automatically locate cameras within a set IP range or configure units in batch by importing spreadsheets and conveniently replicate settings to new cameras.
Preview footage directly on multi-floor, multi-location maps when events are detected to stay on top of your deployment, with Google Maps and OpenStreetMap integration to make geographically spread-out deployments easier to monitor.
Record each camera’s footage to two Synology servers simultaneously for added redundancy and instant access — for instance, to a smaller device at the edge and a larger central management server. Stream feeds directly to the cloud with C2 Surveillance for fast access and convenient sharing whenever you need evidence.3
Add support for deep learning-powered algorithms and detection profiles such as intrusion detection, license plate recognition, congestion alerts, and face recognition by joining Deep Learning NVR servers to your deployment.
Take advantage of a host of native productivity, management, and security solutions available in the web-based Synology DSM operating system.
Conveniently manage your fleet of Synology NAS from a centralized console.
Secure data with comprehensive built-in security tools to protect your devices against evolving threats.
Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.
The HD6500 is backed by Synology's 5-year limited warranty,5 including technical support and hardware replacement services to maximize your return on investment and ensure continued high-quality performance. Learn more
Leverage high sustained performance and reliability with enterprise-grade drives with built-in data protection designed for Synology systems.
We're here to assist you with any questions or information you may require.
Performance figures are obtained through internal testing by Synology. Actual performance may vary depending on the testing environment, usage, and configuration. See performance charts for more information.
PCIe add-in cards, expansion units, and storage drives are sold separately. Refer to the compatibility list for compatible devices.
C2 Storage for Hyper Backup and Hybrid Share requires purchase of an eligible annual or monthly subscription. A free trial is available for each newly registered device.
Surveillance Station includes 2 free licenses. Connecting more cameras and devices requires additional licenses. Learn more
The warranty period starts from the date of purchase as stated on your purchase receipt. Visit https://www.synology.com/company/legal/warranty for more information.
Hardware Specifications |
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CPU |
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CPU
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CPU Model | Intel Xeon Silver 4210R |
| CPU Quantity | 2 | |
| CPU Architecture | 64-bit | |
| CPU Frequency | 10-core 2.4 (base) / 3.2 (turbo) GHz | |
| Hardware Encryption Engine (AES-NI) | ||
Memory |
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Memory
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System Memory | 64 GB DDR4 ECC RDIMM |
| Memory Module Pre-installed | 64 GB (32 GB x 2) | |
| Total Memory Slots | 16 | |
| Maximum Memory Capacity | 512 GB (32 GB x 16) | |
| Notes |
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Storage |
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Storage
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Drive Bays | 60 |
| Maximum Drive Bays with Expansion Unit | 300 (RX6022sas x 4) | |
| SAS multipathing | ||
| Compatible Drive Type* (See all supported drives) |
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| Hot Swappable Drive* | ||
| Notes |
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External Ports |
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External Ports
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RJ-45 1GbE LAN Port | 2 (with Link Aggregation / Failover support) |
| RJ-45 10GbE LAN Port | 2 (with Link Aggregation / Failover support) | |
| Out-of-Band Management LAN Port | 1 | |
| Max. number of LAN ports | 15 | |
| USB 3.2 Gen 1 Port* | 2 | |
| Expansion Port | 2 | |
| Notes |
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PCIe |
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PCIe
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PCIe Expansion |
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File System |
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File System
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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. | |
Appearance |
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Appearance
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Form Factor (RU) | 4U |
| Size (Height x Width x Depth) | 176 mm x 482 mm x 1020 mm | |
| Weight | 37.9 kg | |
| Rack Installation Support* | 4-post 19" rack (Synology Rail Kit - RKS-03) | |
Others |
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Others
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System Fan | 80 mm x 80 mm x 4 pcs |
| Fan Speed Mode |
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| Easy Replacement System Fan | ||
| Power Recovery | ||
| Noise Level* | 60.8 dB(A) | |
| Scheduled Power On / Off | ||
| Wake on LAN / WAN | ||
| Power Supply Unit / Adapter | 1600 W | |
| Redundant Power Supply | ||
| AC Input Power Voltage | 200V to 240V AC | |
| Power Frequency | 50/60 Hz, Single Phase | |
| Power Consumption |
1025.2 W (Access) 418 W (HDD Hibernation) |
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| British Thermal Unit |
3495.93 BTU/hr (Access) 1425.38 BTU/hr (HDD Hibernation) |
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| Notes |
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Temperature |
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Temperature
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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 |
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Certification
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Warranty |
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Warranty
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5 Years | |
| Notes | The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) | |
Environment |
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Environment
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RoHS Compliant | |
Packaging Content |
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Packaging Content
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Optional Accessories |
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Optional Accessories
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| Notes | To install 2.5" SATA SSDs, optional 2.5" drive trays (R5) must be purchased separately. Learn more | |
DSM Specifications |
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| Maximum Single Volume Size |
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| Maximum Internal Volume Number | 256 | |
| SSD Read / Write Cache (White Paper) | ||
| 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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| Notes |
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| File Protocol | SMB/AFP/NFS/FTP/WebDAV | |
| Maximum Concurrent SMB/AFP/FTP Connections | 10,000 | |
| Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion) | 10,000 | |
| Windows Access Control List (ACL) Integration | ||
| NFS Kerberos Authentication | ||
| Notes |
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| Maximum Local User Accounts | 16,000 | |
| Maximum Local Groups | 512 | |
| Maximum Shared Folder | 512 | |
| Maximum Shared Folder Sync Tasks | 32 | |
| Hybrid Share Folder Number | 30 | |
| Data & Folder Backup | ||
| Entire System Backup | ||
| Notes | Full-system backup requires DSM 7.2 or later. | |
| Synology High Availability | ||
| Syslog Events per Second | 6,000 | |
Virtualization |
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Virtualization
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VMware ESXi 7.0 and VAAI | |
| Windows Server 2016 | ||
| Windows Server 2019 | ||
| Windows Server 2022 | ||
| Citrix Ready | ||
| OpenStack | ||
| Networking Protocols | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, Fibre Channel, 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 | |
| Notes | For an updated list of supported browser versions, check the DSM Technical Specifications. | |
Add-on Packages (view the complete package list) |
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Antivirus by McAfee (Trial) |
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Antivirus by McAfee (Trial)
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| Suggested Concurrent Users | 500 | |
| Notes |
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Document Viewer |
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Document Viewer
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| Maximum iSCSI Target Number | 256 | |
| Maximum LUN | 512 | |
| LUN Clone/Snapshot, Windows ODX | ||
| Free Email Accounts | 5 (Additional accounts require purchase of licenses) | |
| Suggested Maximum Users | 20,000 | |
| Suggested Concurrent Users | 4,000 | |
| Maximum Server Performance | 3,523,133 emails per day, approx. 103.7 GB | |
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| Maximum Snapshots per Shared Folder | 1,024 | |
| Maximum of System Snapshots | 65,536 | |
| Default Licenses | 2 (Additional cameras require purchase of licenses) | |
| Maximum IP Cameras and Total FPS (H.264) |
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| Maximum IP Cameras and Total FPS (H.265) |
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| Notes |
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| 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) | |
| Recommended Number of Hosted Files | 100,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) | |
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| Suggested Maximum Users | 17,500 | |
| Suggested Concurrent Users | 7,000 | |
| Notes |
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| Recommended Virtual Machine Instances | 40 (Learn more) | |
| Recommended Virtual DSM Number (Licenses required) | 40 (including 1 Free License) | |
| Notes | The specifications vary depending on system configuration and memory size. | |
| Maximum Connections | 60 | |
