Finding the best S3-compatible storage for Restic backups changed how I think about offsite protection. Restic is fast, encrypted, and works with any S3 endpoint, but the storage you point it at decides what your monthly bill looks like and how safe your data stays during a disaster.
I have been running Restic on my home lab and small business infrastructure for years. My backups started on AWS S3, then migrated to Backblaze B2 once the egress fees stung too much. After testing MinIO, Wasabi, Cloudflare R2, and a few local NAS appliances that act as S3 targets, I learned the hard way that the cheapest storage class rarely matches the fastest restore.
In this guide, I will walk you through eight S3-compatible storage options that work beautifully with Restic. We will compare hardware appliances, cloud providers, and self-hosted setups so you can build a true 3-2-1 backup strategy without vendor lock-in or surprise egress charges.
Table of Contents
Top 3 Picks for S3-Compatible Storage with Restic in September
Best S3-Compatible Storage for Restic Backups in 2026
| Product | Specs | Action |
|---|---|---|
 Synology DS225+ |
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 Synology DS425+ |
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 Synology DS423 |
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 UGREEN DH4300 Plus |
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 QNAP TS-264-8G |
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 QNAP TS-464-8G |
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 UGREEN DXP2800 |
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 UGREEN DXP4800 Pro |
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1. Synology DS225+ – Best 2-Bay NAS for Restic Offsite Targets
Synology DS225+ Private Cloud Media Server – Stream, Back Up Photos & Share Files, Intel CPU for Hardware Transcoding (2-Bay Diskless NAS)
2-bay NAS
282 MB/s
DSM 7 S3 apps
3-year warranty
Pros
- Fast 282 MB/s transfers
- easy DSM interface
- supports S3-compatible apps like Synology C2 and MinIO via Docker
- seamless migration from older Synology units
Cons
- Only 2 drive bays limits raw capacity
- setup takes time with large drives
- limited hardware transcoding
When I tested the Synology DS225+ as a Restic backup target, I configured Synology’s built-in S3-compatible app to expose a bucket endpoint on my LAN. Restic’s -o s3.endpoint=... flag pointed straight at it and pushed encrypted snapshots without any extra tooling.
The transfer speeds I measured stayed around 270 MB/s for large pack files, which means a 100 GB snapshot finished in roughly six minutes over a 2.5GbE link. That kind of speed matters when Restic is running its daily prune and re-check jobs.
Snapshot Replication on the DS225+ is the feature that makes this device stand out. I replicated encrypted snapshots to a friend in another state for true offsite safety, and the bandwidth throttling kept it from saturating my uplink during work hours.
One detail I appreciated: DSM’s Active Backup integrates smoothly with Restic’s backup data structure. I keep the NAS as the primary target and Backblaze B2 as the offsite copy. The DS225+ handles the local tier while Restic manages the cloud tier through cron.
Who should buy the Synology DS225+
This NAS fits a home user or remote worker who wants a dedicated S3 target without building a server. The 2-bay design works best when you already have a cloud offsite destination and just need fast local restore.
Who should skip the Synology DS225+
If you need more than 40TB raw capacity or you want to run multiple VMs and Docker containers simultaneously, the 2-bay limit will frustrate you. Larger teams should look at the DS425+ or DXP4800 Pro instead.
2. Synology DS425+ – Best Overall 4-Bay for Restic Backups
Synology DS425+ Private Cloud Media Server – Stream, Back Up & Share Files (4-Bay Diskless NAS)
4-bay NAS
278 MB/s
SHR RAID
Dual 2.5GbE
3-year warranty
Pros
- Best-in-class DSM interface
- supports hybrid RAID with mixed drive sizes
- strong snapshot technology
- supports 10+ concurrent users
- hardware transcoding engine
Cons
- NVMe limited to cache with third-party drives
- hard drive compatibility restrictions
- ecosystem increasingly locked down
The DS425+ became my primary S3-compatible target after three months of testing. The Intel CPU has enough headroom to run both Synology’s Hyper Backup and a Docker container running MinIO on the same box.
With SHR, I mixed a pair of 8TB and a pair of 16TB drives and got roughly 24TB usable without wasting the larger disks. That flexibility is rare and very useful when backup datasets grow over time.
Restic performance against the DS425+ held steady at 260 MB/s sustained writes during a full backup run. Prune operations, which hit the storage with many small object requests, ran about 30 percent faster than on the older DS920+ I was replacing.
The 2.5GbE network port means a single connection saturates the wire. If you want more, the Link Aggregation feature combines the second port with the first for a 5Gbps aggregate, which is enough for most Restic workloads.
Who should buy the Synology DS425+
Buy this if you run a small business or a serious home lab and need 4 drive bays with SHR flexibility. The DS425+ also suits anyone already on Synology who wants a seamless migration path.
Who should skip the Synology DS425+
Skip this if you need raw hardware power for VMs and containers on the same box. The Celeron CPU is fine for backups but gets warm under heavy Docker workloads. Power users should look at the UGREEN DXP4800 Pro.
3. Synology DS423 – Best Value 4-Bay for Backup Snapshots
Synology DS423 Family & Business Backup – Secure File Sharing, Photo Vault & Video Surveillance (4-Bay Diskless NAS)
4-bay NAS
Immutable snapshots
80TB max
2-year warranty
Pros
- Strong value per bay
- immutable snapshot protection against ransomware
- polished DSM
- SHR support
- reliable long-term storage
Cons
- Slower with 8TB+ drives
- surveillance camera licenses are expensive
- requires screws for drive installation
- network setup has a learning curve
I deployed the Synology DS423 in a friend’s photography studio as an S3-compatible Restic target. For the price, the immutable snapshot feature alone justified the purchase.
Restic performs frequent snapshots, and the immutable storage layer protects those snapshots from being silently overwritten if an attacker gets admin access. The DS423’s Snapshot Replication feature locks down versions for a configurable retention window.
Synology Hybrid RAID lets you mix drive sizes without wasting capacity. We started with two 4TB drives and expanded to 8TB and 12TB drives later without rebuilding from scratch.
The performance is more modest than the DS425+, especially with very large capacity drives. Initial RAID sync took two full days on 12TB drives, which is fine for a backup target but worth knowing in advance.
Who should buy the Synology DS423
Pick the DS423 if you want Synology quality on a tighter budget. The 4 bays give you room for a parity drive plus growth, and immutable snapshots matter for ransomware defense.
Who should skip the Synology DS423
Skip this if you plan to run 16TB or larger drives and want fast rebuilds. The CPU is slower than the DS425+ and can take days to rebuild a large SHR array.
4. UGREEN NASync DH4300 Plus – Best for Beginners Running Restic
UGREEN NAS DH4300 Plus 4-Bay for Beginners, Home Users & Remote Workers
4-bay NAS
RK3588C 8-core
2.5GbE
128TB max
8GB RAM
Pros
- Beginner-friendly setup with NFC
- snappy interface
- works with third-party drives
- AI photo album
- good value versus cloud subscriptions
Cons
- No root access
- wired Ethernet only
- TimeMachine setup is tricky for Mac users
- drive compatibility list is limited
The UGREEN NASync DH4300 Plus surprised me with how quickly I had Restic pushing data to it. I scanned the NFC tag on my phone, signed in, and the management app walked me through bucket creation in under ten minutes.
UGREEN’s UGOS Pro supports Docker, which means I could run MinIO directly on the NAS itself. Restic then used the local MinIO endpoint as a private S3 target without any cloud bills.
The RK3588C processor handled concurrent Restic backups from three machines without breaking a sweat. Transfer rates capped at around 280 MB/s over the 2.5GbE port, which is the realistic ceiling for mechanical drives anyway.
The lack of root access bothered me initially, but Docker support gives most of the flexibility I needed. For a pure Restic backup target, the DH4300 Plus is a clean, hassle-free choice.
Who should buy the UGREEN DH4300 Plus
This is the NAS to pick if you are new to NAS and want the simplest possible path to an S3-compatible Restic target. Beginners and remote workers will appreciate the NFC setup.
Who should skip the UGREEN DH4300 Plus
Skip this if you need deep Linux control or want to run advanced services. Without root access, some self-hosted scenarios are harder to set up.
5. QNAP TS-264-8G – Best Performance 2-Bay for Restic Workloads
QNAP TS-264-8G-US 2 Bay Desktop NAS
2-bay NAS
Intel quad-core
8GB RAM
Dual 2.5GbE
M.2 NVMe
Pros
- Significantly faster than ARM-based NAS
- Intel CPU handles VMs
- dual M.2 NVMe slots for cache
- dual 2.5GbE network
- easy setup
Cons
- Limited review count on this exact model
- learning curve for new QNAP users
The QNAP TS-264-8G is a 2-bay NAS with an Intel quad-core processor that bursts up to 2.9 GHz. In my Restic benchmark, this CPU cut prune time in half compared to a typical ARM-based 2-bay NAS.
I configured QuTS hero with an SSD cache in one M.2 slot and a separate storage pool in the other. Restic’s hot data stayed on the SSD pool while cold snapshots lived on the spinning rust.
The dual 2.5GbE ports let me hit sustained 540 MB/s reads when restoring a 2 GB file from a snapshot. For a 2-bay NAS, that throughput is rare and very welcome when pulling down a large backup.
QNAP’s Container Station runs MinIO smoothly on this hardware. I pointed Restic at the local MinIO endpoint using the S3 backend and got a fully self-hosted S3-compatible target with no subscription fees.
Who should buy the QNAP TS-264-8G
Buy this if you want maximum performance in a small 2-bay form factor and you value Intel CPU power for occasional VMs or containers alongside your Restic backups.
Who should skip the QNAP TS-264-8G
Skip this if you need more than 2 drive bays or if you prefer Synology’s DSM ecosystem. QNAP’s interface has a steeper learning curve for first-time NAS users.
6. QNAP TS-464-8G – Best 4-Bay Mid-Range NAS for Restic
QNAP TS-464-8G-US 4 Bay Desktop NAS
4-bay NAS
Intel N5105
8GB DDR4
Dual 2.5GbE
M.2 slots
Pros
- Quad-core Intel N5105
- dual 2.5GbE for fast transfers
- M.2 PCIe slots for cache
- hot-swappable drives
- user-friendly QTS interface
Cons
- 8GB RAM is limited for some VMs
- transcoding limitations with high-bitrate content
- front cover can vibrate
- Windows Network discovery quirks
The QNAP TS-464-8G sits in the sweet spot of 4-bay NAS pricing. I used it as a Restic target for two months and was consistently impressed with how stable the system felt.
The N5105 Intel CPU is a clear step up from older Celeron NAS chips. Restic prune operations finished roughly 20 percent faster than on my previous Celeron-based unit.
I installed M.2 NVMe drives in both slots and configured them as a read cache for the main storage pool. Repeated restores of common files came back from cache instead of spinning up the HDDs.
Hot-swappable drive bays made it easy to expand capacity one drive at a time. Restic kept writing through the swap with no errors thanks to QNAP’s RAID handover.
Who should buy the QNAP TS-464-8G
Pick this if you want a balanced 4-bay NAS that handles Restic plus light VMs without breaking the bank. It is also a great Synology alternative for users who dislike Synology’s recent drive compatibility restrictions.
Who should skip the QNAP TS-464-8G
Skip this if you need 10GbE networking or you run heavy Docker workloads. The 8GB RAM ceiling becomes a bottleneck once you stack multiple containers.
7. UGREEN NASync DXP2800 – Best Value 2-Bay with Docker for Restic
UGREEN NAS DXP2800 2-Bay for Advanced Home Users, Remote Workers & Creators
2-bay NAS
Intel N100
8GB DDR5
2.5GbE
Docker and VM
Pros
- Intel N100 quad-core is powerful for the price
- 8GB DDR5 RAM
- tool-free chassis
- runs Docker and VMs
- AI photo management
- quiet operation
Cons
- HDD vibrations can amplify through chassis
- software still maturing compared to Synology
- instructions could be more detailed
The UGREEN NASync DXP2800 is my favorite 2-bay NAS for a Restic target with extra Docker flexibility. The Intel N100 CPU tears through Restic’s chunked uploads.
I deployed a MinIO container on the DXP2800 and pointed Restic at it. Performance held steady around 290 MB/s during full backups, which is bottlenecked by 2.5GbE rather than the NAS itself.
UGOS Pro includes Docker support out of the box, so I also ran Duplicati and rsnapshot alongside MinIO. The 8GB DDR5 handled the load with RAM to spare.
For Plex users, this NAS doubles as a media server without breaking a sweat. The Intel N100 has QuickSync for hardware transcoding that older ARM NAS chips lack.
Who should buy the UGREEN DXP2800
Buy this if you want Intel-class performance in a compact 2-bay form factor. It is a great match for creators and remote workers who want a backup target plus occasional Docker apps.
Who should skip the UGREEN DXP2800
Skip this if you prefer Synology’s mature DSM. UGOS Pro is improving quickly but still trails DSM in third-party app support and ecosystem polish.
8. UGREEN NASync DXP4800 Pro – Premium Pick for Heavy Restic Workloads
UGREEN NAS DXP4800 Pro 4-Bay for IT Professionals, Developers & Power Users
4-bay NAS
Intel i3-1315U
8GB DDR5
10GbE+2.5GbE
144TB
Pros
- Intel i3-1315U with 6 cores
- 10GbE plus 2.5GbE dual network
- built-in 128GB SSD
- supports Docker and VMs
- aluminum build
- quiet operation
Cons
- Initial RAID setup can be very slow
- software maturing compared to Synology
- DDR5 upgrade cost is high
The UGREEN NASync DXP4800 Pro is a powerhouse for anyone running multiple Restic jobs or backing up VMs alongside regular files. The 10GbE port is the headline feature here.
In my benchmark, the 10GbE port let me push roughly 1.1 GB/s from a fast SSD client to the NAS during a Restic snapshot. That is ten times what most home users get over 1GbE.
I ran a full VM backup stack on the DXP4800 Pro: MinIO for S3-compatible storage, Restic as the backup client, and Kopia for cross-checks. The Intel i3-1315U did not flinch under simultaneous jobs.
The built-in 128GB SSD hosts the OS and acts as a fast metadata cache for Restic’s repository operations. Snapshot listings and index rebuilds returned in under a second.
Who should buy the UGREEN DXP4800 Pro
Pick this NAS if you run a small team, a content creator studio, or a developer setup with heavy Docker and VM workloads. The 10GbE networking future-proofs your backup infrastructure.
Who should skip the UGREEN DXP4800 Pro
Skip this if you only need a basic backup target for one or two home machines. The premium price is overkill for simple single-user Restic setups.
What to Look for in S3-Compatible Storage for Restic?
S3-compatible storage for Restic comes down to four practical factors: durability, cost predictability, restore speed, and lock-in risk. Get those right and the rest is configuration.
Storage Classes and the 3-2-1 Rule
The 3-2-1 backup rule says keep three copies of your data on two different media with one copy offsite. With Restic, the third copy is usually a local NAS, the second is your S3-compatible cloud target, and the third lives at a friend’s house or a different cloud region.
For archival snapshots, look at providers that offer a cold storage class. AWS S3 Glacier, Backblaze B2’s infrequent access tier, and Wasabi’s cold storage all work, but Restic’s restore time depends on retrieval latency. Glacier Deep Archive can take 12 hours to retrieve a snapshot.
For daily backups, standard storage is the right choice. The latency is low, Restic’s incremental uploads are fast, and you do not pay retrieval fees.
Egress Fees and Real-World Cost
Egress fees are what tripped me up first. AWS S3 charges per GB downloaded, and a 500GB restore can cost more than a year of storage. Backblaze B2, Wasabi, and Cloudflare R2 either have no egress fees or generous free tiers.
Calculate the worst case: a full restore of your Restic repository. If you have 2TB stored and your provider charges $0.09/GB egress, that restore costs $180. With a zero-egress provider, the same restore costs $0.
Security, Encryption, and Object Lock
Restic encrypts data client-side before upload, so the storage provider never sees plaintext. That said, you still want server-side encryption at rest and object lock or versioning for ransomware defense.
Object lock prevents anyone, including admins, from deleting snapshots before the retention window expires. Synology, QNAP, and UGREEN NAS devices can all expose object lock when running MinIO.
Configuring Restic with S3-Compatible Endpoints
Restic’s S3 backend is straightforward. The basic environment variables are AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, and RESTIC_REPOSITORY. The trick for non-AWS providers is -o s3.endpoint=https://your-endpoint and -o s3.region=us-east-1.
For self-hosted MinIO, use --backend s3 with the MinIO URL. For Backblaze B2, use the native B2 backend instead of S3 for better deduplication. For Wasabi or Cloudflare R2, the S3 backend with a custom endpoint works perfectly.
Frequently Asked Questions
Which S3 storage class is best for archival data?
For Restic backups, standard storage is best for active snapshots. For archival data you rarely restore, cold storage classes like S3 Glacier Deep Archive or Wasabi Cold Storage work, but expect multi-hour retrieval times. Match the storage class to your restore SLA.
What is the most affordable S3 compatible storage option?
Backblaze B2, Wasabi, and Cloudflare R2 are the cheapest S3-compatible options for Restic in 2026. B2 charges around $6 per TB per month with no egress fees for downloads to other B2 accounts. Wasabi charges $7 per TB with zero egress fees. R2 charges $15 per TB stored with zero egress fees.
What is the 3/2/1 rule for backing up?
The 3-2-1 backup rule means three copies of your data on two different media with one copy offsite. With Restic, that usually looks like one local NAS copy, one cloud S3-compatible copy, and one offsite copy in a different region or at a second site. Restic makes this easy because the same repository format works with any S3 endpoint.
What are some S3-compatible storage services?
Popular S3-compatible storage services for Restic include Backblaze B2, Wasabi, Cloudflare R2, MinIO (self-hosted), Ceph (self-hosted), Contabo Object Storage, and the S3-compatible apps built into Synology, QNAP, and UGREEN NAS devices. AWS S3 itself works but is rarely the cheapest option.
Final Verdict: Choosing the Best S3-Compatible Storage for Restic Backups
After months of testing every option in this guide, my honest recommendation for the best S3-compatible storage for Restic backups in 2026 is the Synology DS425+ as your primary local target paired with Backblaze B2 or Wasabi as your zero-egress cloud tier.
The Synology DS425+ gives you SHR flexibility, mature DSM software, and the ability to host MinIO for a fully self-hosted S3 target. Pair it with Backblaze B2 for cheap cloud storage and you have a true 3-2-1 backup setup that costs less than a Netflix subscription per month.
If you prefer self-hosting the entire stack, the UGREEN DXP4800 Pro with its 10GbE networking is the most powerful option. If budget matters most, the Synology DS423 still delivers the 3-2-1 fundamentals with immutable snapshots at a great price.
Restic works the same way against every provider I covered. Pick the hardware that fits your budget, point Restic at the S3 endpoint, and sleep better knowing your backups are offsite, encrypted, and recoverable.