Data as of Aug 25, 2026 · Based on 278 AI responses from ChatGPT Search and Google AI Mode · See how Parse measures this
Best fit: 
RubrikBrands AI recommends here
Veeam — Best when you need hardened, on‑prem or cloud immutability: supports Hardened Linux repositories and cloud object‑locking (AWS, Azure, Wasabi). Tradeoff: still maintain isolated secondary copies and strict access controls.
Rubrik — Good when you prefer appliance or SaaS that enforces immutability and fast recovery: cited as a recommended immutable backup option. Caveat: consider total cost and appliance vs cloud tradeoffs for your environment.
Wasabi — Best when you want cost‑effective cloud object‑lock (S3 Object Lock) for immutable retention; pairs with backup software to prevent deletions. Caveat: proper object‑lock configuration and isolated copies remain essential.
VeeamSource | Citation share |
|---|---|
Immutable Backups & Their Role in Cyber Resilience - Veeamhttps://www.veeam.com/blog/immutable-backup.html | 5.2% |
 Top 10 Immutable Backup Solutions for 2023 - Airiamhttps://airiam.com/blog/top-immutable-backup-solutions/ | 4.3% |
 Ransomware recovery in minutes: How AirGap delivers immutable backups | ConnectWisehttps://www.connectwise.com/blog/how-airgap-delivers-immutable-backups | 2.4% |
 What is Immutable Backup? - Complete Guide for 2026https://www.acronis.com/en/blog/posts/immutable-backup/ | 2.2% |
 Ransomware Recovery Versus Immutability - VergeIOhttps://www.verge.io/blog/ransomware/ransomware-recovery-versus-immutability/ | 1.9% |
Best Ransomware-Proof Cloud Backup: Versioning, Immutability, and the 3-2-1 Rule - WebsiteRatinghttps://www.websiterating.com/storage/best-ransomware-proof-cloud-backup/ | 1.9% |
What is immutable backup? The guide to ransomware-proof data protection | ConnectWisehttps://www.connectwise.com/blog/what-is-immutable-backup | 1.7% |
 Immutable backup: Why it's important for data resilience | Dattohttps://www.datto.com/blog/immutable-backup/ | 1.7% |
 Ransomware Protection: Immutable Backups and Instant Recoveryhttps://www.backblaze.com/cloud-storage/solutions/ransomware-readiness-and-recovery | 1.5% |
 Best Immutable Storage for Enterprise: Top 5 Solutions in 2026https://cloudian.com/guides/data-backup/best-immutable-storage-for-enterprise-top-5-solutions-in-2026/ | 1.4% |
To protect your data from ransomware, you need a backup target or software utilizing WORM (Write Once, Read Many) object storage, S3 Object Lock , or an offline/air-gapped system that cannot be altered or deleted until a set time expires.
Top Anti-Ransomware Backup Solutions
Key Features to Look For
If you can share whether you need an on-premises, cloud-based, or hybrid setup, and approximate data size , I can recommend the exact configuration or product tier for your environment.
Yes. What you want is ransomware-resistant backup storage with enforced immutability, not simply a backup system with snapshots.
For a typical Windows/VMware/Hyper-V environment, I would strongly consider Veeam Backup & Replication + a hardened Linux repository.
I'd design it roughly like this:
Production → Veeam → Local immutable repository → Off-site immutable repository
For the off-site copy, object storage with WORM/Object Lock is particularly attractive. For example, Amazon S3 Object Lock prevents objects from being deleted or overwritten during their retention period, including using a WORM model.
You could therefore have:
| Layer | Purpose |
|---|---|
| Local Veeam repository | Very fast restores |
| Local immutable repository | Protection against ransomware/admin deletion |
| Off-site immutable object storage | Protection against ransomware + site disaster |
| Periodic offline/air-gapped copy | Additional defense against catastrophic compromise |
The important distinction is that RAID, snapshots, and ordinary backups aren't sufficient by themselves. If ransomware gains administrative access to the storage system, it may be able to delete snapshots or backups. The backup copy needs a storage-level retention mechanism that the attacker cannot simply turn off.
If you're already heavily invested in a cloud platform:
If you tell me what you're backing up (e.g. Windows PCs, Microsoft 365, VMware/Hyper-V VMs, NAS/file servers, SQL Server) and approximately how many TB, I can recommend a specific architecture and hardware/storage configuration, including an inexpensive option and a more robust enterprise option.
You could therefore have:
| Layer | Purpose |
|---|---|
| Local Veeam repository | Very fast restores |
| Local immutable repository | Protection against ransomware/admin deletion |
| Off-site immutable object storage | Protection against ransomware + site disaster |
| Periodic offline/air-gapped copy | Additional defense against catastrophic compromise |
To truly stop ransomware from deleting or encrypting your backups, you need WORM (Write Once, Read Many) or Object Locking technology . When configured correctly, not even an administrator with root access or a fully compromised local machine can delete or alter the backups until the retention period expires.
Here are the top options and architectures to achieve true backup immutability:
immutable flags enabled. Even if an attacker compromises your active directory or root credentials on the backup server, they cannot issue a delete command to the blocks.Core Rules for Implementation
To help narrow down the best specific product, let me know:
Yes. The key is to not rely on ordinary snapshots alone. You want backups stored with a WORM/immutable retention lock, ideally outside the credentials and security boundary of your production environment.
For ransomware resistance, I'd aim for:
Production → local backup → immutable off-site backup
For example:
Servers/NAS → Veeam → local repository → S3 Object Lock (Compliance)
And ideally keep the off-site backup account/bucket under a separate administrative/security boundary, with MFA and minimal permissions. Veeam recommends this kind of separation as part of a 3-2-1 strategy.
The important distinction is:
Snapshot ≠ immutable backup. A ransomware operator who obtains administrative access to your storage system may be able to delete conventional snapshots. An actual WORM/Object Lock retention policy prevents deletion or modification until the lock expires.
If you tell me what you're backing up (Windows servers, VMware/Hyper-V, NAS, Microsoft 365, databases, etc.), how much data, and roughly how much you want to spend per month, I can narrow this down to a specific architecture and products.
Yes. If your requirement is “ransomware must not be able to encrypt or delete the backup”, I’d focus on true immutable/WORM storage, ideally with an isolated copy rather than merely a backup server with restricted permissions.
| Solution | Immutability | Protection against compromised admin | Best fit |
|---|---|---|---|
| Rubrik | Native immutable filesystem + retention locks | Strong zero-trust/isolated architecture | Easiest enterprise solution |
| Veeam + Hardened Repository | WORM/immutable Linux repository | Single-use credentials + immutable storage | Flexible, cost-conscious environments |
| Veeam + S3 Object Lock | Object-level WORM retention | Can be separated from production credentials | Off-site/cloud copy |
Rubrik is particularly compelling if you want the backup platform itself designed around ransomware recovery: its backups are stored in an immutable format and are designed so ransomware cannot encrypt or delete them. Its Secure Vault additionally provides air-gapped, immutable, access-controlled backups.
Veeam is a very strong alternative if you already use Veeam or want more control. Its Hardened Repository can make backup files immutable for a defined retention period; during that period they cannot be modified, moved, or deleted. Veeam also supports immutable object-storage repositories, including S3 Object Lock.
For most organizations, I'd build it like this:
Production → local immutable backup → separate/off-site immutable backup
For example:
Veeam → Linux Hardened Repository → S3/Object Lock
or, if you want a more turnkey architecture:
Production → Rubrik → Rubrik Secure Vault
The important part is that immutability is enforced by the storage layer, not simply by Windows permissions or an administrator promising not to delete files. Veeam explicitly describes its Hardened Repository as WORM storage, and immutable files cannot be deleted until their configured expiration.
If you tell me what you're backing up (VMware, Hyper-V, physical Windows servers, Microsoft 365, NAS, databases, etc.), roughly how many TB, and whether you want cloud or on-prem, I can narrow this down to 2–3 specific architectures and estimate the likely cost.
Yes. If your main requirement is “ransomware must not be able to delete the backups,” I’d avoid relying on ordinary VM/storage snapshots alone. Use a backup system that writes to immutable object storage with WORM/Object Lock, ideally in a separate account/security boundary.
Veeam Backup & Replication supports immutable repositories using object-storage-native immutability. Once data is immutable, it cannot be manually deleted, removed by the retention policy, or deleted using the cloud provider's normal management tools.
A good architecture would be:
Production → Veeam → immutable S3/Object Lock storage → separate account
For example:
Wasabi provides S3-compatible Object Lock, and its documentation explicitly states that Compliance-mode immutable objects cannot be altered or deleted during their retention period, including by Wasabi personnel.
Veeam also explicitly supports Wasabi as an immutable object-storage target.
If by “immutable snapshots” you mean cloud snapshots such as AWS EBS snapshots, Azure snapshots, VMware snapshots, etc., I wouldn't make those your sole ransomware protection. Snapshots are useful for fast recovery, but they can share security/control planes with the production environment and therefore can be compromised alongside it. Veeam itself recommends having snapshots and separate backups, following a 3-2-1 strategy.
A particularly robust design is:
Local snapshots → fast recovery
Veeam backups → immutable offsite object storage → ransomware recovery
Optional offline/tape copy → protection against catastrophic account compromise
If you tell me what you're backing up (Windows PCs, VMware/Hyper-V, NAS, Microsoft 365, AWS/Azure, SQL, etc.) and roughly how much data you have, I can recommend the most appropriate immutable setup and give you a concrete architecture.
To truly protect your backups from ransomware, you need a solution built on the WORM (Write Once, Read Many) principle and object lock technology . Once an immutable snapshot is written, it cannot be modified, deleted, or encrypted by anyone—even an administrator with root access—until the retention period expires.
Here are the top backup solutions offering true immutable and ransomware-proof capabilities:
If you'd like, let me know:
I can help you select and design the right implementation plan.
No sources cited
To protect against ransomware that tries to delete or modify your recovery points , you need storage implementing WORM (Write Once, Read Many) or Object Lock policies . True immutability locks data at the storage layer for a defined retention period, meaning not even an administrator or root user can delete or encrypt the snapshots until the retention timer expires.
Top solutions providing immutable snapshots and ransomware-proof backups range from local hardware to cloud infrastructure:
Key Requirements for True Immutability
If you can tell me whether you need an on-premises (local NAS/server) or cloud-based solution, and your approximate data size , I can recommend the most cost-effective setup for your budget.
Yes. The key is not merely “snapshots”—you want backups whose retention is enforced outside the control of the production system and backup administrator, so ransomware cannot simply use stolen credentials to delete them.
| Solution | Immutability | Ransomware resistance | Best fit |
|---|---|---|---|
| Rubrik | Native immutable filesystem + logical air gap | Excellent | Best turnkey enterprise option |
| Veeam + Wasabi Object Lock | S3 Object Lock / compliance retention | Excellent when configured correctly | Flexible, cost-conscious |
| Veeam Hardened Repository | Linux hardened repository with immutability | Excellent | On-prem / hybrid |
| Wasabi Object Lock | Compliance-mode object immutability | Excellent as backup target | Cloud/off-site copy |
For a business that wants the simplest strong solution:
Rubrik is worth looking at. Its backup filesystem is designed to be immutable, and Rubrik says backups cannot be encrypted or deleted by ransomware. It also provides ransomware investigation and identification of clean recovery points.
For a more economical/flexible architecture:
Use Veeam + Wasabi Object Lock in Compliance mode. Veeam supports immutable object-storage repositories, and specifically prevents immutable data from being removed through the cloud provider's tools or even by the provider's support staff.
Wasabi's Compliance mode prevents objects from being changed or deleted until their retention period expires.
Production servers / VMs
│
▼
Veeam Backup
│
┌────┴─────┐
▼ ▼
Local Cloud
backup immutable
repository object storage
│ │
│ └── Wasabi Object Lock
│ Compliance mode
│ 30–90+ day retention
│
└── Hardened Linux Repository
immutable retention
That gives you multiple recovery copies, including one that ransomware operating with compromised domain/admin credentials should not be able to erase.
Veeam's hardened repository is specifically designed to prevent backup files from being deleted or modified even if an attacker compromises components involved in backup operations.
Don't rely on a normal NAS snapshot and call it ransomware-proof. If the attacker gains administrative access to the storage array, they may be able to delete the snapshots too.
You want:
For example, a 90-day immutable copy means that even if ransomware gets your backup server and administrator credentials today, it cannot simply issue a delete command against those recovery points.
If you tell me what you're backing up (VMware, Hyper-V, physical Windows/Linux, Microsoft 365, NAS, databases, etc.), rough data size, and whether you want cloud, on-prem, or both, I can narrow this down to a specific architecture and approximate cost.
To truly protect your backups from being deleted, encrypted, or modified by ransomware (even if an attacker compromises your highest-level administrator credentials), you need storage implementing hardware-level or API-enforced immutability (WORM - Write Once, Read Many).
True immutability means the storage system physically or logically rejects deletion commands from any source—including root accounts and local system admins—until a pre-set retention timer expires.
Top-tier solutions that offer immutable snapshots and un-deletable ransomware protection depend on your scale and environment:
To help narrow down the exact product or architecture you need, tell me:
