Series refreshes, metadata processing and file analysis can temporarily increase CPU and storage activity. If Sonarr itself remains CPU-bound during these jobs after storage latency is ruled out, a faster processor provides more responsive maintenance tasks.
For very large TV libraries or users performing frequent rescans and imports.Sonarrs hårdvarukrav: CPU, RAM, lagring och mediestack
Lär dig Sonarrs hårdvarukrav för CPU, RAM, lagring, SQLite, Docker, nedladdningsklienter, mediebibliotek och ZimaOS-hårdvara.
Sonarr hardware requirements at a glance
Sonarr itself is a lightweight TV-series automation and library-management service. It does not transcode video and it is not the BitTorrent or Usenet downloader, so the hardware required by Plex/Jellyfin and qBittorrent/SABnzbd must be sized separately.
- CPU
- Sonarr publishes no universal official minimum CPU model or core count. A modern low-power x86 CPU is ample for normal RSS monitoring, searches, imports and renaming; CPU load rises during large library scans, refreshes and file analysis.
- RAM
- There is no current official universal RAM minimum. OneUptime's 2026 Ubuntu tutorial recommends at least 2 GB RAM and 4 GB preferred for its Sonarr/Radarr host, while older community reports show Sonarr running on Raspberry Pi-class hardware. Treat those as deployment examples, not upstream minima.
- Storage
- Sonarr's application/database footprint is small compared with the TV library. Keep Sonarr's config/database on local storage—preferably SSD—while media capacity should be sized from the actual series library, download workflow and retention policy.
- Database
- Sonarr can use SQLite and also supports PostgreSQL. Servarr documentation warns that SQLite databases should not live on network drives because network filesystems can eventually cause a malformed database.
- GPU
- Sonarr itself does not require a GPU because it does not transcode or play video. GPU/iGPU requirements belong to Plex, Jellyfin, Emby or another media server if that service performs hardware transcoding.
- Best Zima starting point
- ZimaBoard 2 832 is already more than sufficient for Sonarr itself and a light *arr stack. Add SSD/HDD storage for config, downloads and media. Move to 1664 or ZimaCube 2 when the download client, media server, larger container stack or multi-drive library—not Sonarr alone—needs more resources.
From official requirements to the right setup
Sonarr sizing starts by separating Sonarr from the downloader and media server, then checks library scale, database placement, storage paths and the rest of the *arr stack.
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Official requirements
Identify Sonarr's role correctly: it monitors series and indexers, sends jobs to a torrent/Usenet client, then imports and organizes completed files. Do not size the server as though Sonarr performs downloading or video transcoding itself.
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Confirm your needs
Place Sonarr's configuration/database on local persistent storage. If SQLite is used, avoid SMB/NFS/network-mounted database storage; keep network or bulk disks for the media library instead.
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Leave room to grow
Size RAM and CPU for the complete stack: Sonarr, Radarr/Lidarr/Prowlarr, qBittorrent/SABnzbd, reverse proxy and Plex/Jellyfin can collectively need far more resources than Sonarr alone.
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Run it on ZimaOS
Test a real library refresh, search and completed-download import while monitoring Sonarr RAM, CPU and disk I/O. Monitor the downloader and media server separately so their resource use is not misattributed to Sonarr.
Check every playback client
- Sonarr only versus complete *arr/download/media stack
- Number of series, seasons and episode files
- SQLite versus PostgreSQL database choice
- Local SSD path for Sonarr config/database
- qBittorrent, SABnzbd or other download-client workload
- Plex, Jellyfin or Emby transcoding workload
- Media-library capacity and filesystem layout
- Other ZimaOS containers and always-on services
Official minimum requirements
The current Sonarr website and project do not publish a universal minimum CPU, RAM or disk-capacity table. Current Sonarr v4 is a .NET-based application, and real hardware demand depends heavily on library scale and the other services in the media-automation stack.
Do not present 2 GB RAM as an official Sonarr minimum. OneUptime uses 2 GB/4 GB in its combined Ubuntu Sonarr/Radarr tutorial, while old community examples run Sonarr on Raspberry Pi hardware. For ZimaOS, use a modern x86 system, local SSD-backed config/database storage and size the rest of the hardware from the downloader, media server and library.
| Requirement | Official minimum | What this supports |
|---|---|---|
| CPU minimum | No universal official minimum published | The current Sonarr project does not define a required processor model or core count. |
| RAM minimum | No universal official minimum published | Current upstream Sonarr does not publish a fixed RAM floor. Third-party 2-GB or 4-GB figures should remain third-party guidance. |
| Disk minimum | No universal official capacity published | Sonarr application data is small relative to the media library. Practical disk planning is dominated by TV files, downloads and backups. |
| Default web port | 8989 | The current Sonarr website documents access through localhost:8989 for a standard local installation. |
| Database storage | Keep SQLite database/config on local storage | Servarr documentation warns that SQLite and network drives do not work reliably together and can eventually produce a malformed database. |
| GPU | Not required by Sonarr itself | Sonarr automates acquisition and file organization; media transcoding is performed by a separate media server such as Plex or Jellyfin. |
When to upgrade your hardware
Upgrade Sonarr hardware only after identifying whether Sonarr itself, the download client, the media server or storage is the actual bottleneck.
Large library refreshes and imports make Sonarr consistently CPU-bound
The complete *arr and downloader stack creates memory pressure
Media storage and I/O become the main constraint
Sonarr alone is light, but Radarr, Lidarr, Prowlarr, qBittorrent/SABnzbd, databases and other containers add up. Increase RAM when the combined server approaches its memory ceiling or starts swapping.
For all-in-one media-automation servers with many Docker applications.Imports, hardlinks/copies, torrent/Usenet writes, library scans and playback can compete for disks. More bays, SSD workspace or better filesystem layout can improve the whole pipeline more than adding CPU to Sonarr.
For large multi-terabyte libraries, high download rates and simultaneous media-server use.Plan hardware growth with confidence
Sonarr scales cleanly when config/database storage, download workspace and long-term media storage are treated as separate layers.
Keep Sonarr config and database on local SSD
Servarr explicitly warns against putting SQLite databases on network drives. Local SSD storage provides lower latency and avoids the database-corruption risk associated with SMB/NFS-style database placement.
Use SATA or NVMe SSD for ZimaOS app data and Sonarr /config, even when the TV library lives on larger HDDs.Use hardlinks when the download and media library filesystem allows it
A well-planned Docker path and filesystem layout can let Sonarr import completed torrents without duplicating full media files, reducing storage overhead and unnecessary I/O.
Keep downloader and media-library paths on compatible local storage/filesystems when hardlink workflows are part of the media stack.Separate active-download I/O from long-term media capacity
qBittorrent or Usenet extraction can generate heavier writes than Sonarr itself. Fast SSD workspace plus HDD media storage can keep automation responsive while preserving bulk capacity.
Use SSD/NVMe for active download/unpack workloads and larger SATA HDDs for completed TV libraries.Scale the media server independently from Sonarr
Plex/Jellyfin transcoding can require much more CPU or iGPU capability than Sonarr. Do not buy a GPU or higher media tier solely for Sonarr.
Choose ZimaBoard 2 or ZimaCube 2 media capabilities from the Plex/Jellyfin workload while treating Sonarr as a lightweight companion service.Can it run on ZimaOS?
Sonarr is currently listed in the ZimaOS App Store under Media. ZimaOS provides the packaged deployment while Sonarr remains only one component of a complete automated TV-library workflow.
Install Sonarr from the ZimaOS App Store
ZimaOS currently lists Sonarr as 'The PVR for Usenet and BitTorrent users' in the Media category.
Open Sonarr in the ZimaOS App StoreMount local persistent storage for Sonarr config
Keep the Sonarr database and configuration on local Zima storage rather than a network share when using SQLite. Media paths can point to the larger local NAS storage managed by the same system.
Read the Sonarr database guidanceConnect Sonarr to a separately sized download client and media server
Sonarr sends releases to qBittorrent/Usenet clients and organizes completed files; Plex/Jellyfin handles playback and transcoding. Each companion app should be sized from its own workload.
Read the Sonarr overviewChoose Zima hardware for your Sonarr workload
Sonarr itself is light enough that ZimaBoard 2 832 is already a strong fit. Hardware upgrades should follow the complete media pipeline—download clients, Plex/Jellyfin, storage capacity and the number of co-hosted apps—rather than Sonarr alone.
Is Sonarr part of a compact *arr stack or a larger multi-drive media server?
Compact *arr stack — Sonarr, downloader and light supporting apps
Start with ZimaBoard 2 832 and add SSD/HDD storage. Its Intel N150 and 8 GB RAM provide substantial headroom for Sonarr itself and a modest automation stack. Choose 1664 when more containers share the server.
- Sonarr plus light *arr/download automationZimaBoard 2 832
- Larger Docker/media-automation stackZimaBoard 2 1664
Large media library — multi-drive storage, downloads and media server
Choose ZimaCube 2 because of the broader NAS workload. Standard suits storage-first media automation; Pro is more appropriate when heavier multitasking, high-speed networking or Plex/Jellyfin workloads also demand more headroom. Creator Pack adds no Sonarr-specific benefit.
- Large multi-drive TV library and moderate servicesZimaCube 2 Standard
- Heavier all-in-one media/NAS serverZimaCube 2 Pro
- Only when separate GPU/AI work also requires itZimaCube 2 Creator Pack
This is a workload guide, not a guaranteed series-count, scan-time or concurrent-user benchmark. Results depend on Sonarr version, library size, database placement, filesystem, download clients, media server, storage latency and other ZimaOS services.
| Zima hardware | Best for | Example workload | Core configuration | Recommended boundary | Next step |
|---|---|---|---|---|---|
| ZimaBoard 2 832 | The best-value current Zima option for Sonarr, a modest *arr stack and normal home media automation. | Sonarr, Prowlarr, qBittorrent or another downloader, light automation and a small-to-medium TV library. |
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Do not use the 32 GB eMMC as the only long-term media/download disk. Plex/Jellyfin transcoding and qBittorrent/Usenet load must be sized separately. | Get Now |
| ZimaBoard 2 1664 | A compact Sonarr server with more memory for a larger *arr/download/container stack. | Sonarr, Radarr/Lidarr/Prowlarr, download clients, reverse proxy and more always-on Docker apps. |
|
Do not claim Sonarr needs 16 GB. Upgrade to 1664 because the total server workload needs memory headroom. | Get Now |
| ZimaCube 2 Standard | A storage-first Sonarr/media server with a large multi-drive TV library. | Sonarr automation, downloads, large TV collections, backups and moderate media-server use. |
|
Standard has the same 8 GB system-memory capacity as ZimaBoard 2 832. Choose it primarily for storage and NAS integration, not because Sonarr requires a stronger host. | Get Now |
| ZimaCube 2 Pro | A larger all-in-one media/NAS platform where Sonarr shares the machine with downloads, media serving and many containers. | Large TV library, *arr stack, qBittorrent/Usenet, Plex/Jellyfin, backups and high-speed NAS traffic. |
|
Do not attribute media-transcoding gains to Sonarr. Pro is justified by the broader NAS/media workload, not by Sonarr's own resource needs. | Get Now |
| ZimaCube 2 Creator Pack | A Sonarr-managed media library on a server already purchased for independent GPU, AI or creator workloads. | Large media automation stack plus separate local AI, creator or GPU applications. |
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Extreme overkill for Sonarr alone. Never recommend Creator Pack because the user has a large TV library or many Sonarr series; use storage/media-server requirements to justify the platform. | Get Now |
What the Press Says
Highlights from trusted reviewers worldwide.
“ZimaCube 2: Not just another NAS, tested with 25TB storage, local AI agents, 4K transcoding, and real homelab workflows.”Read full review
“The ZimaBoard 2 is a compact x86 server board that can be turned into a mini NAS, home server, media box, or self-hosting hub.”Read full review
“ZimaCube 2: A modern, high-performance NAS with plenty of room to grow—built for users who want more than basic storage.”Read full review
“Coverage focused on ZimaCube 2's open hardware foundation, no monthly fee, and self-hosting flexibility.”Read full review
Loved by the Community
Stories and reviews from people who build with Zima every day.
★★★★★
Zima Blade Little yet Powerful
Maybe I am not digital natives but I live with PCs since 12 years old in 1984 when IBM PC clone come to my home. Many years have passed and many operating system I've tried. For me Zima blade and CasaOS was a quantum leap for home PC enthusiast and server lab machine to make me stay curious and relevant for this era.
★★★★★
Very good!!
I use ZimaCube Pro as 5th Proxmox cluster node. It runs several VMs and containers, including a VM with GPU passthrough to run a self-hosted LLM. A specific LXC container runs a Samba server for NAS capabilities using four of six RAID 6 SATA HDDs with ZFS.
★★★★★
Great innovation for mini server!
It is very useful and makes a powerful mini server for many purposes, including university and college students in engineering and electronics. Thank you so much for making this server.
★★★★★
Avaliação ZimaBoard 2
Construí um servidor de uso pessoal. O desempenho está muito bom e funciona perfeitamente onde quer que eu esteja. A surpresa é não dependermos de grandes estruturas para termos nosso próprio servidor de dados. Como iniciante, estou gostando bastante do ZimaOS, pois ele é simples e eficiente.
Frequently asked questions
These answers distinguish Sonarr's lightweight automation role from the much larger resource requirements that can come from download clients, media servers and storage.
How much RAM does Sonarr need?
Current Sonarr does not publish one universal official RAM minimum. OneUptime's January 2026 Ubuntu tutorial uses at least 2 GB RAM and recommends 4 GB for its Sonarr/Radarr host, but that is third-party deployment guidance rather than an upstream Sonarr minimum.
Is 2 GB RAM enough for Sonarr?
It can be for a small Sonarr-focused system, but 2 GB should not be labeled an official minimum. The supplied 2019 Reddit thread includes users running Sonarr/Radarr/Lidarr on Raspberry Pi 3 hardware, while the same discussion warns that downloaders and Plex-style streaming can require much stronger hardware.
Does Sonarr need a powerful CPU?
Not for ordinary TV automation. Sonarr monitors feeds, searches indexers and organizes files; large library scans and imports can temporarily raise CPU use. A modern Intel N150-class CPU provides substantial headroom for Sonarr itself.
Does Sonarr need a GPU for 4K TV shows?
No. Sonarr does not decode or transcode the TV files it manages. If Plex, Jellyfin or Emby must transcode 4K video, size the GPU/iGPU from that media-server workload, not from Sonarr.
How much storage does Sonarr need?
Sonarr publishes no universal application-disk minimum because the TV library dominates capacity. Keep the application config/database on local SSD-backed storage, then size HDD/SSD capacity from downloads, episode quality, retention and the number of series.
Can Sonarr's database live on an SMB or NFS share?
Avoid this when using SQLite. Servarr documentation warns that SQLite and network drives do not work reliably together and can eventually produce a malformed database. Keep /config and the SQLite database on local storage even if the media library is on larger NAS volumes.
Can ZimaBoard 2 run Sonarr?
Yes. ZimaBoard 2 832 has an Intel N150, 8 GB RAM, dual SATA and dual 2.5GbE, making it more than sufficient for Sonarr and a modest *arr stack. Add local SSD/HDD storage instead of relying on 32 GB eMMC for the complete media workflow.
When should I choose ZimaCube 2 instead of ZimaBoard 2 for Sonarr?
Choose ZimaCube 2 when the overall media server needs six drive bays, larger storage pools, more simultaneous services or heavier Plex/Jellyfin/download workloads. Sonarr alone does not justify the larger system.
What sources and further reading informed this Sonarr hardware guide?
The supplied 2019 Reddit thread says the actual Sonarr/Radarr/Lidarr requirements are small and includes Raspberry Pi 3 examples, while stressing that download clients and Plex/Emby can dominate hardware needs. OneUptime's January 2026 Ubuntu tutorial specifies at least 2 GB RAM and recommends 4 GB, but this is a combined tutorial prerequisite rather than an official Sonarr minimum. Sonarr's official website is the primary product source and confirms its role as a PVR/automation tool rather than a media transcoder. RapidSeedbox's January 2026 guide likewise explains that Sonarr hands downloads to external BitTorrent/Usenet clients, organizes completed files, uses port 8989 and can run on NAS/Docker/Raspberry Pi-class systems; it does not establish a numeric official hardware minimum.
