| Operating system | DiskStation Manager (DSM) — widely regarded as intuitive and consistent | QTS (most units); QuTS hero (ZFS) on higher-end models |
| Interface complexity | Polished desktop-style UI; logical app layout; low learning curve for non-IT staff | Feature-rich; more configuration options exposed by default; steeper initial learning curve |
| File sharing protocols | SMB, NFS, AFP, FTP, WebDAV, iSCSI; full Active Directory and LDAP integration | SMB, NFS, AFP, FTP, WebDAV, iSCSI; Active Directory and LDAP integration |
| Backup software (PC & server) | Active Backup for Business — agentless, incremental, no per-device licence fee; covers PCs, servers, VMs, Microsoft 365 | Hybrid Backup Sync (HBS 3) — supports local, remote, and cloud backup; per-device licensing model varies by task type |
| File sync & collaboration | Synology Drive Server with desktop and mobile clients, version history, team folders | Qsync Central for file synchronisation; Qfile for mobile access |
| Surveillance / CCTV storage | Surveillance Station — up to 2 free IP camera licences; additional licences purchased separately | QVR Pro (the current QNAP surveillance app; the older Surveillance Station app offers fewer free channels) — 8 free camera channels, with client playback limited to the last 14 days on the free tier; additional licences purchased separately |
| Cloud backup support | Hyper Backup to AWS S3, Azure, Backblaze B2, and Synology C2; versioned backups with integrity check | Hybrid Backup Sync to AWS S3, Azure, Dropbox, Google Drive, and more; flexible job scheduling |
| Virtualisation on NAS | Virtual Machine Manager supports Windows and Linux VMs on mid-range and above units | Virtualisation Station on compatible units; Container Station for Docker and LXC containers |
| ZFS / data integrity | Btrfs file system on most units — supports snapshots and data scrubbing; no ZFS option currently | QuTS hero uses OpenZFS — inline deduplication, compression, and end-to-end checksums |
| Hardware range (tower SMB) | DS224+, DS423+, DS923+, DS1522+, and similar; consistent build quality; fewer entry-level options | TS-233, TS-464, TS-873A, TVS-h874, and many others; broader range at comparable bay counts |
| RAM upgradability | User-upgradable on most mid-range DiskStation units; Synology-branded RAM required on some newer models | Generally user-upgradable with standard DDR4 SO-DIMMs on most SMB units |
| 10 GbE networking | Available on select mid-range and above models (DS923+, DS1522+ with expansion card) | Available on more models, including some mid-range units with built-in 10 GbE ports |
| App ecosystem | Smaller but tightly integrated and maintained first-party suite; selective third-party packages | Large catalogue of first-party and third-party packages; broader but less uniform quality |
| Warranty (standard) | 3-year limited warranty on most DiskStation units | 2- or 3-year warranty depending on model series; verify at time of purchase |
| Typical best fit | Offices prioritising ease of management, Microsoft 365 backup, and file collaboration | Technically confident teams wanting performance, ZFS integrity, advanced VMs, or more surveillance licences |