TS-435XeU
Short depth rackmount 4-bay NAS, supporting 2.5GbE/10GbE connectivity and M.2 NVMe SSD caching
TS-435XeU-4G
| CPU | Marvell OCTEON TX2™ CN9130 / CN9131 ARMv8 Cortex-A72 4-core 2.2GHz processor |
| CPU Architecture | 64-bit ARM |
| Floating Point Unit | ✓ |
| Encryption Engine | ✓ |
| System Memory | 4 GB SODIMM DDR4 (1 x 4GB) |
| Maximum Memory | 32 GB (1 x 32 GB) |
| Memory Slot | 1 x SO-DIMM DDR4 |
| Flash Memory | 4GB (Dual boot OS protection) |
| Drive Bay | 4 x 3.5-inch SATA 6Gb/s, 3Gb/s |
| Drive Compatibility | 3.5-inch bays: 3.5-inch SATA hard disk drives 2.5-inch SATA hard disk drives 2.5-inch SATA solid state drives |
| Hot-swappable | ✓ |
| M.2 Slot | 2 x M.2 2280 PCIe Gen 3 x1 slots |
| SSD Cache Acceleration Support | ✓ |
| 2.5 Gigabit Ethernet Port (2.5G/1G/100M) | 2 |
| 10 Gigabit Ethernet Port | 2 x 10GbE SFP+ |
| Wake on LAN (WOL) | ✓ |
| Jumbo Frame | ✓ |
| USB 2.0 port | 2 |
| USB 3.2 Gen 1 port | 2 |
| Form Factor | 1U Rackmount |
| LED Indicators | HDD 1-4, Status, LAN, USB, M.2 SSD 1-2 |
| Buttons | Power, Reset |
| Dimensions (HxWxD) | 43.3 × 430 × 292.12 mm |
| Weight (Net) | 4.17 kg |
| Operating temperature | 0 – 40 °C (32°F – 104°F) |
| Storage Temperature | -20 – 70°C (-4°F – 158°F) |
| Relative Humidity | 5-95% RH non-condensing, wet bulb: 27˚C (80.6˚F) |
| Power Supply Unit | 100W PSU, 100-240V |
| Power Consumption: HDD Sleep Mode | 17.367 W |
| Power Consumption: Operating Mode, Typical | 30.878 W |
| Fan | 3 x 40mm, 12VDC |
| System Warning | Buzzer |
| Kensington Security Slot | ✓ |
| Max. Number of Concurrent Connections (CIFS) – with Max. Memory | 1500 |
Note: Use only QNAP memory modules to maintain system performance and stability. For NAS devices with more than one memory slot, use QNAP modules with identical specifications.
Warning: Using unsupported modules may degrade performance, cause errors, or prevent the operating system from starting.
* Sound Level Test
Environment: Refer to ISO 7779; Maximum HDD loaded; Bystander Position; Average data from 1 meter in front of operating NAS.
Product images are for illustrative purposes only and may differ from the actual product. Due to differences in monitors, colors of products may also appear different to those shown on the site.
Designs and specifications are subject to change without notice.
| Operating System | QTS 5.0.0 |
| Supported Client Operating Systems |
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| Supported Browsers |
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| Supported Languages | Chinese (Traditional & Simplified), Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese (Brazil), Romanian, Russian, Spanish, Swedish, Thai, and Turkish |
| Storage Pool | ✓ |
| SED Storage Pool | ✓ |
| Maximum Pool size | 308 TB |
| Maximum number of storage pool | 128 |
| Volume Type | Thick, Thin, Static |
| Maximum volume size | 250 TB Note: At least 4 GB RAM is required. |
| Maximum number of volume | 128 |
| Maximum shared folder size | 250 TB |
| Maximum number of shared folder | 512 |
| JBOD Expansion | ✓ |
| VJBOD / VJBOD Cloud | ✓ |
| iSCSI Service | ✓ |
| Fibre Channel Service | ✓ |
| LUN Type | Thick, Thin |
| File-based iSCSI LUN | ✓ |
| Block-based iSCSI LUN | ✓ |
| Maximum LUN size | 250 TB Note: At least 4 GB RAM is required. |
| Maximum number of targets LUN | 256 |
| LUN feature |
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| Auto Tiering | ✓ |
| RAID Type |
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| RAID Group | ✓ To ensure data security, system stability, and storage performance, the maximum number of drives for a single RAID group is now 16 (applicable to RAID 5, RAID 6, RAID TP, and subgroups of RAID 50 and RAID 60). Nevertheless, users can combine multiple RAID groups into a large storage pool that contains more than 16 drives, using RAID 50, RAID 60, or RAID 10 as the RAID configuration. This enhancement will only be applied to new RAID groups. All existing RAID groups and storage systems will not be affected. |
| RAID Level Migration | ✓ |
| RAID Expansion (by adding Disk) | ✓ |
| RAID Expansion (by replacing bigger Disks) | ✓ |
| Storage Pool Expansion (by adding RAID Group) | ✓ |
| RAID Hot Spare | Global, Local |
| RAID Sync/Rebuild/Scrubbing | ✓ |
| Internal drive | EXT4 |
| External drive | EXT3, EXT4, NTFS, FAT32, HFS+, and exFAT (optional for ARM model) Note: To use exFat in certain models you must purchase an exFAT driver license from License Center. |
| Disk, Enclosure Locate | ✓ |
| Disk S.M.A.R.T. Scan | ✓ |
| Disk S.M.A.R.T. Data Migration | ✓ |
| Ironwolf Health Management | ✓ |
| Secure Erase | ✓ |
| SSD Trim | ✓ |
| SSD Life Estimation | ✓ |
| Disk Roaming | ✓ |
| Disk Standby | ✓ |
| Volume Snapshot | ✓ |
| LUN Snapshot | ✓ |
| Maximum Snapshot (Per System) | Check maximum number of snapshots of your NAS |
| Maximum Snapshot (Per Volume / LUN) | Check maximum number of snapshots of your NAS |
| Minimum Snapshot Interval | 5 minutes |
| Snapshot Retention Policy | ✓ |
| Self-serve Snapshot Recovery | ✓ |
| Application Consisted Snapshot | ✓ |
| Snapshot Full Clone | ✓ |
| Snapshot Replica / Vault | ✓ |
| SSD read-only Cache | ✓ |
| SSD read-write cache | ✓ |
| SSD write-only cache | ✓ |
| SSD Cache Maximum Size | Check your QNAP NAS cache capacity and RAM requirements |
| SSD Cache RAID | 0, 1, 5, 6, 10 |
| SSD profiling tool | ✓ |
| External Device Management | ✓ |
| Mount Smart Phone (MTP) | ✓ |
| External RAID Device (QNAP so on) Management (External Device Mode) | ✓ |
| External RAID Device (QNAP so on) Management (NAS Mode) | ✓ |
| File Server |
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| FTP Server |
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| Maximum FTP connection | 1024 |
| File Station (Web) | ✓ |
| Object Storage | ✓ |
| Local user account | 4,096 |
| Local group account | 512 |
| Domain user/group account | 200,000 |
| Domain Security | ✓ |
| Domain Controller | ✓ |
| Shared folder permission | ✓ |
| Advanced folder permission | , (AFP, CIFS/SMB, FTP, and File Station) |
| Windows ACL | , (CIFS/SMB) |
| User quota | ✓ |
| Group quota | ✓ |
| Folder quota | , (Snapshot shared folder) |
| Home folder | ✓ |
| Resource Monitor | ✓ |
| SNMP | V2, V3 |
| Network recycle bin |
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| System Log & Notification Center | Log recording: 3,000 event per hour |
| Smart Fan | ✓ |
| Schedule on/off | ✓ |
| Internet protocol | IPv4, IPv6 |
| Virtual Switch | ✓ |
| Port trunking | ✓, (7 modes) |
| VLAN | ✓ |
| DHCP Server | ✓ |
| DDNS (Dynamic Domain Name Service) | ✓ |
| Network access protection with auto-blocking | SSH, Telnet, HTTP(S), FTP, CIFS/SMB, and AFP |
| Security Counselor | ✓ |
| Malware Remover | ✓ |
| AES 256-bit Volume Encryption validated by FIPS 140-2 CAVP | ✓ |
| 2-step verification | ✓ |
| Allow/Deny List | ✓ |
| Access Protection | ✓ |
| Service binding | ✓ |
| Firewall | ✓ |
| vSphere Web Client Plug-in | ✓ |
| VMware vSphere VAAI for iSCSI | ✓ |
| VMware vSphere VAAI for NAS | ✓ |
| Windows ODX | ✓ |
| Windows/VMware Snapshot Agent | ✓ |
| HTTP/HTTPS Connections | TLS 1.0/1.1/1.2/1.3 |
| Supports WebDAV Connection | ✓ |
| Supports Virtual Hosts | 32 |
| Qsync | ✓ Note: At least 1 GB RAM is required. |
| [Qsync] Management Mode | User customization, Central |
| [Qsync] Qsync client supported platforms | Windows, macOS, Ubuntu, Android, and iOS |
| [Qsync] Maximum number of version control | 64 |
| HybridMount | ✓ Note: At least 1 GB RAM is required. |
| [HybridMount] File Cloud Gateway | Concurrent Connections = 20 Upload & 20 Download |
| [HybridMount] Network Drive Mount | ✓ |
| [HybridMount] Free cloud gateway sessions | 2 |
| HBS (Hybrid Backup Sync) | ✓ Note: At least 1 GB RAM is required. |
| [HBS (Hybrid Backup Sync)] NAS to NAS backup | ✓ |
| [HBS (Hybrid Backup Sync)] NAS to rsync backup | ✓ |
| [HBS (Hybrid Backup Sync)] NAS to FTP backup | ✓ |
| [HBS (Hybrid Backup Sync)] Cloud Backup | ✓ |
| [HBS (Hybrid Backup Sync)] Cloud Sync | ✓ |
| [HBS (Hybrid Backup Sync)] 2-way and Active Sync | ✓ |
| [HBS (Hybrid Backup Sync)] Backup Deduplication | ✓ |
| [HBS (Hybrid Backup Sync)] Real-time backup | ✓ |
| [HBS (Hybrid Backup Sync)] Apple Time Machine Backup | ✓ |
| [HBS (Hybrid Backup Sync)] External drive backup | ✓ |
| [HBS (Hybrid Backup Sync)] Maximum number of backup job | 400 |
| Hyper Data Protector | ✓ |
| Boxafe | ✓ Note: At least 1 GB RAM is required. |
| [Boxafe] Office 365 Backup | ✓ |
| [Boxafe] Google Workspace Backup | ✓ |
| [Boxafe] Full-text search | ✓ |
| Qsirch | ✓ Note: This feature is supported by all QNAP NAS devices with at least 2 GB of memory |
| [Qsirch] Previews | Photos, music, videos, PDFs, Gmail, and others |
| [Qsirch] Integrate Mac Finder | ✓ |
| [Qsirch] Advanced picture search | ✓ |
| [Qsirch] Search filters | ✓ |
| QuMagie | ✓ Note: At least 1 GB RAM is required. |
| [QuMagie] Browse photos | ✓ |
| [QuMagie] Virtual and smart albums | ✓ |
| [QuMagie] AI-assisted photo management | People, things, places, and others |
| Antivirus (free) | ✓ |
| McAfee (License) | ✓ |
| QVPN Service | ✓ Note: At least 1 GB RAM is required. |
| [QVPN Service] Remote Access | PPTP, L2TP/IPSec, OpenVPN, WireGuard, QBelt (QNAP proprietary) |
| [QVPN Service] Supportedd utility and mobile app | Windows, macOS, iOS, and Android |
| [QVPN Service] Supported maximum clients | 100 |
| HD Station | ✓ |
| LDAP Server | ✓ |
| RADIUS | ✓ |
| SQL server | ✓ |
| License Center | ✓ |
| Multimedia Console | ✓ |
| Photo Station | ✓ |
| Music Station | ✓ |
| Video Station | ✓ |
| Download Station | ✓ |
| Notes Station | ✓ |
| Qfiling | ✓ |
| Media Streaming add-on | ✓ |
| QmailAgent | ✓ |
| QuWAN | ✓ |
| DA Driver Analyzer | ✓ |
| Q’center | ✓ Note: The application is available in the App Center and in virtual appliance marketplaces (VMware vSphere ESXi and Microsoft Hyper-V). |
| Q’center Server | ✓ |
| Q’center Agent | ✓ |
| Connect to Q’center | ✓ |
| Virtualization Station | ✓ Note: At least 4 GB RAM is required. |
| [Virtualization Station] Supports Virtual machine instances | Windows, Linux, Unix, and Android |
| [Virtualization Station] VM importing, exporting, cloning, snapshot capturing, backup, and restoration | All function is Fine. |
| [Virtualization Station] Virtual switches | Can create a virtual switch |
| [Virtualization Station] GPU pass-through | Not support GPU |
| [Virtualization Station] Suggested number of virtual machine instances | 4 Note: the actual number of virtual machine instances supported may vary by the memory installed on NAS. |
| Container Station | ✓ Note: At least 1 GB RAM is required. |
| [Container Station] Supported type | LXC/LXD and Docker Note: LXD has been supported after Container Station 2.4 |
| [Container Station] Docker Hub Registry | ✓ |
| [Container Station] Container importing and exporting | ✓ |
| [Container Station] Console mode | ✓ |
| Linux Station | ✓ |
| Supports Linux Station versions | 16.04, 18.04, and 20.04 |
| Linux Station Center | ✓ |
| QVR Pro | ✓ Note: At least 4 GB RAM is required. The maximum number of channels supported varies by NAS model, network configuration, and camera settings. For more information, visit https://www.qnap.com/go/qvr-nas-selector. |
| [QVR Pro] Recording Technique | Index database based |
| [QVR Pro] License Type | Perpetual |
| [QVR Pro] User-defined trigger events | ✓ |
| [QVR Pro] Metadata | ✓ |
| [QVR Pro] QVR Pro Client (Desktop) | Windows, macOS, and QNAP HybridDesk Station |
| [QVR Pro] QVR Pro Client (Mobile) | Android and iOS |
| [QVR Pro] Recording camera streams | H.264 |
| [QVR Pro] Free built-in camera channels | 8 |
| QVR Elite | ✓ Note: At least 1 GB RAM is required. The maximum number of channels supported varies by NAS model, network configuration, and camera settings. For more information, visit https://www.qnap.com/go/qvr-nas-selector. |
| [QVR Elite] Recording Technique | Standard MP4 file based |
| [QVR Elite] License Type | Subscription-based |
| [QVR Elite] User-defined trigger events | ✓ |
| [QVR Elite] QVR Pro Client (Desktop) | Windows, macOS, and QNAP HybridDesk Station |
| [QVR Elite] QVR Pro Client (Mobile) | Android and iOS |
| [QVR Elite] Recording camera streams | H.264 |
| [QVR Elite] Free built-in camera channels | 2 |
| QVR Pro Client | ✓ |
| [QVR Pro Client] Dynamic View Layout | ✓ |
| [QVR Pro Client] Windows | ✓ |
| [QVR Pro Client] Mac | ✓ |
| [QVR Pro Client] HybridDesktop | ✓ |
| [QVR Pro Client] iOS | ✓ |
| [QVR Pro Client] Android | ✓ |
| QVR Center | ✓ Note: At least 4 GB RAM is required. |
| [QVR Center] Log management | ✓ |
| [QVR Center] Central monitoring across multiple servers | ✓ |
| QVR Guard | ✓ Note: At least 4 GB RAM is required. |
| [QVR Guard] Failover design | ✓ |
| [QVR Guard] Viewing task details | ✓ |
| [QVR Guard] Automatic switch between Standby and Takeover modes | ✓ |
| QVR Human | ✓ |
| QVR Face | ✓ The maximum number of channels supported varies by NAS model, network configuration, and camera settings. For more information, visit https://www.qnap.com/solution/qvr-face/en-us/ |
| QVR DoorAccess | ✓ |
