Data as of Sep 18, 2026 · Based on 296 AI responses from ChatGPT Search and Google AI Mode · See how Parse measures this
Best fit: 
RubrikBrands AI recommends here
Named in 71% of answers
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.
Named in 47% of answers
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.
Named in 47% of answers
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.
Named in 46% of answers
Source | 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/ | 2.1% |
 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% |
Immutable backup: What it is, why it matters, and how to get it in 2026 | ConnectWisehttps://www.connectwise.com/blog/what-is-immutable-backup | 1.8% |
 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 completely protect your backups from being encrypted, modified, or deleted by ransomware, you need a solution built on **WORM (Write Once, Read Many)** technology . Even if an attacker gains root or administrative access to your network, true immutability ensures that deletion or alteration commands are rejected by…
To completely protect your backups from being encrypted, modified, or deleted by ransomware, you need a solution built on WORM (Write Once, Read Many) technology . Even if an attacker gains root or administrative access to your network, true immutability ensures that deletion or alteration commands are rejected by the storage layer until the retention period expires.
Top enterprise and SMB solutions providing immutable, ransomware-proof backups fit into distinct architectural categories:
To help narrow down the best fit, tell me:
If you need backups that ransomware **cannot delete or encrypt**, look for **true immutability** rather than just “snapshots.” The key features are: - **Immutable snapshots / recovery points**: once created, they cannot be modified or deleted for a defined retention period. - **WORM storage (Write Once, Read Many)**:…
If you need backups that ransomware cannot delete or encrypt, look for true immutability rather than just “snapshots.” The key features are:
Backblaze Veeam Software## Common solutions that support immutable backups
| Solution | Best fit | Immutable mechanism |
|---|---|---|
| Veeam | Small/medium business to enterprise virtualization and servers | Hardened Linux repositories, S3 Object Lock, immutable backup copies Veeam Software |
| Rubrik | Enterprise environments needing ransomware recovery workflows | Immutable backup architecture and cyber recovery features |
| Commvault | Large enterprises with many workloads | Immutable storage integrations and security controls |
| Druva | SaaS-based backup with less infrastructure management | Cloud-native immutable protection |
| Backblaze backblaze.com | Lower-cost cloud repository | S3-compatible Object Lock with WORM retention Backblaze |
| Wasabi Technologies | Cloud object storage backup targets | Object Lock-based immutable storage |
| Nakivo | Smaller environments and virtualization | Immutable recovery points with supported repositories NAKIVO Help and Support Center |
Example:
Production servers → Backup software → S3 Object Lock storage
Pros:
Examples:
Example:
Servers → Immutable NAS/appliance → Immutable cloud copy
Pros:
Examples:
This remains one of the strongest defenses because the backup is physically unreachable during an attack.
A common mistake is using “snapshots” on the same storage system as production. If ransomware gets administrator access to that storage, it may be able to delete snapshots unless they are specifically locked. Immutable storage features such as Object Lock enforce retention at the storage layer.
If you tell me your environment (Windows servers, VMware/Hyper-V, NAS, Microsoft 365, databases, size in TB, and budget), I can narrow this to a few architectures.
Yes. What you want is **immutable backup storage**, ideally combined with **air-gapping**. The key is that ransomware—or an attacker who compromises your backup server—must not be able to delete or overwrite the backup copies. ### My recommended architecture **Production → Backup server → Immutable object storage**
Yes. What you want is immutable backup storage, ideally combined with air-gapping. The key is that ransomware—or an attacker who compromises your backup server—must not be able to delete or overwrite the backup copies.
Production → Backup server → Immutable object storage
For example:
Veeam supports immutable repositories using S3 Object Lock, Azure version-level WORM, and several S3-compatible providers. During the immutability period, Veeam cannot delete the protected backup, and the storage provider prevents deletion as well.
I would not rely solely on storage snapshots for ransomware protection. A snapshot that remains under the same administrative account/control plane as production can potentially be deleted by an attacker who compromises that environment.
Instead, use snapshots/backups that are copied into immutable WORM storage. For example, Amazon S3 Object Lock prevents protected objects from being overwritten or permanently deleted during their retention period.
| Approach | Ransomware protection | Complexity | Best for |
|---|---|---|---|
| Veeam + hardened Linux repository | Excellent | Medium | On-prem |
| Veeam + S3 Object Lock | Excellent | Low–Medium | Most organizations |
| Veeam Data Cloud Vault | Excellent | Low | Want managed backup/storage |
Veeam's hardened Linux repository provides immutable storage on-premises, while object-storage repositories can use Object Lock/WORM.
If you want the least operational burden, Veeam Data Cloud Vault is worth considering; its immutable storage uses Object Lock/time-based retention and compliance controls designed so administrators cannot modify or delete protected data before the retention period expires.
For a typical small/midsize business, I'd use:
Servers/NAS → Veeam → local backup → immutable S3 repository
with something like:
That gives you a much stronger 3-2-1-1-0 style architecture: multiple copies, different media, off-site, at least one immutable/offline copy, and verified recoverability. Veeam specifically recommends immutable object storage as part of this strategy.
If you tell me what you're backing up (Windows PCs/servers, VMware, Hyper-V, NAS, Microsoft 365, SQL, AWS/Azure, etc.) and approximately how much data you have, I can recommend a specific solution and estimate the storage/cost.
| Approach | Ransomware protection | Complexity | Best for |
|---|---|---|---|
| Veeam + hardened Linux repository | Excellent | Medium | On-prem |
| Veeam + S3 Object Lock | Excellent | Low–Medium | Most organizations |
| Veeam Data Cloud Vault | Excellent | Low | Want managed backup/storage |
Veeam's hardened Linux repository provides immutable storage on-premises, while object-storage repositories can use Object Lock/WORM.
If you want the least operational burden, Veeam Data Cloud Vault is worth considering; its immutable storage uses Object Lock/time-based retention and compliance controls designed so administrators cannot modify or delete protected data before the retention period expires.
For a typical small/midsize business, I'd use:
Servers/NAS → Veeam → local backup → immutable S3 repository
with something like:
To truly protect against ransomware that attempts to delete or encrypt your backups, you need a solution built on **strict immutability** (often enforced via S3 Object Lock in Compliance Mode or hardware-enforced air-gapping). Even if an attacker compromises your primary administrator credentials, they cannot alter or…
To truly protect against ransomware that attempts to delete or encrypt your backups, you need a solution built on strict immutability (often enforced via S3 Object Lock in Compliance Mode or hardware-enforced air-gapping). Even if an attacker compromises your primary administrator credentials, they cannot alter or delete the data until the designated retention period expires.
Here are the top-tier immutable backup solutions categorized by your infrastructure needs:
To help me recommend the exact right fit , tell me:
If your goal is **a backup system with immutable snapshots that ransomware cannot delete**, look for **true immutability**, not just “read-only” permissions. The strongest designs use **WORM (Write Once, Read Many), Object Lock, hardened repositories, or isolated vaults** so that even a compromised administrator…
If your goal is a backup system with immutable snapshots that ransomware cannot delete, look for true immutability, not just “read-only” permissions. The strongest designs use WORM (Write Once, Read Many), Object Lock, hardened repositories, or isolated vaults so that even a compromised administrator account cannot remove recovery points during the retention period.
Good options to evaluate:
| Solution | Best fit | Immutable protection |
|---|---|---|
| Veeam Software | SMB to enterprise, VMware/Hyper-V, Microsoft 365, mixed environments | Hardened Linux repositories with immutability, plus integrations with object storage immutability. www.rediacc.com |
| Rubrik | Enterprise environments needing ransomware recovery workflows | Immutable backup architecture and security-focused recovery controls. www.rubrik.com |
| Commvault | Large enterprises and complex hybrid environments | Supports immutable storage approaches including WORM/object-lock style protections. www.rediacc.com |
| Druva | SaaS-first backup without managing appliances | Cloud architecture with immutable backup storage options. expertinsights.com |
| Backblaze Backblaze B2 Cloud Storage | Low-cost immutable cloud backup target | S3-compatible Object Lock prevents modification/deletion until retention expires. www.retrospect.comwww.backblaze.com |
| Wasabi Technologies | Affordable immutable offsite storage | Supports Object Lock retention for ransomware-resistant backups. www.retrospect.comwww.sep.de |
For most organizations:
If you tell me your environment (Windows servers, VMware, Hyper-V, NAS, Microsoft 365, AWS/Azure, number of TB, and budget), I can narrow this to a few specific architectures.
To truly protect your backups from being deleted, encrypted, or modified by ransomware, you need **storage-level immutability** (often backed by **WORM** —Write Once, Read Many, or **Object Lock** ). This means that even if ransomware compromises your administrator credentials or local network, the storage layer…
To truly protect your backups from being deleted, encrypted, or modified by ransomware, you need storage-level immutability (often backed by WORM —Write Once, Read Many, or Object Lock ). This means that even if ransomware compromises your administrator credentials or local network, the storage layer itself will reject any command to delete or alter the backups until a predefined retention period expires.
The top categories and solutions to achieve this depend on your setup scale:
To help narrow down the exact setup you need, tell me:
Yes. What you want is **immutable/WORM backup storage**—not merely a backup product with snapshots. The key is that the backup copy must be protected at the **storage layer**, so compromising the backup server or admin credentials doesn't let ransomware delete the recovery points. ## My top recommendation **Veeam…
Yes. What you want is immutable/WORM backup storage—not merely a backup product with snapshots. The key is that the backup copy must be protected at the storage layer, so compromising the backup server or admin credentials doesn't let ransomware delete the recovery points.
Veeam Backup & Replication + an immutable repository
Veeam currently supports two particularly strong architectures:
Veeam's current documentation specifically describes immutable repositories as protection against malware and other attacks, and its current platform supports hardened repositories and immutable object storage.
I'd build it roughly like this:
Production servers / VMs
│
▼
Veeam Backup Server
│
├──────────► Immutable local repository
│ (Linux Hardened Repository)
│
└──────────► Off-site immutable repository
(S3 Object Lock)
For example:
The important part is that the ransomware attacker should not have credentials capable of deleting the immutable storage. Veeam's hardened repository supports mechanisms such as single-use credentials and is specifically designed to prevent an attacker who compromises the backup infrastructure from simply deleting the repository contents.
You can also use a managed/cloud approach based on immutable object storage. Veeam supports immutable backup storage across Amazon S3 and S3-compatible providers, as well as Azure Blob, Google Cloud Storage, Wasabi and others.
For particularly strong protection, S3 Object Lock in Compliance mode is attractive: AWS states that protected objects cannot be overwritten or deleted by users, including the root user, until the retention period expires.
| Requirement | Recommendation |
|---|---|
| Best overall | Veeam + Linux Hardened Repository + immutable cloud copy |
| Small business / simpler | Veeam + immutable cloud object storage |
| Maximum ransomware resilience | 3-2-1-1-0 with two independent immutable copies |
| Need very fast local restores | Hardened Repository on-prem |
| Need disaster recovery/off-site protection | S3 Object Lock / equivalent immutable object storage |
One important distinction: snapshots alone aren't necessarily ransomware-proof. If ransomware gains administrative access to the storage array, it may be able to delete ordinary snapshots. You specifically want immutable snapshots/backups whose retention lock is enforced below the backup application's administrative layer.
If you tell me what you're backing up (VMware, Hyper-V, physical Windows/Linux, Microsoft 365, NAS, etc.), approximate data size, and whether you want on-prem, cloud, or both, I can recommend a concrete architecture and estimate the storage/cost.
To truly protect your backups from being deleted or encrypted by ransomware—even if an attacker gains full administrative control over your network—you need an architecture built on **immutability** and **isolation**.[](https://www.sentinelone.com/cybersecurity-101/cybersecurity/immutable-backups/)…
To truly protect your backups from being deleted or encrypted by ransomware—even if an attacker gains full administrative control over your network—you need an architecture built on immutability and isolation.
An effective immutable backup solution relies on the 3-2-1-1 rule : 3 copies of data, 2 different media types, 1 offsite copy, and 1 immutable/offline (air-gapped) copy.
Top Solutions for Immutable & Ransomware-Proof Backups
Key Requirements for True Protection
To help narrow down the best setup, tell me:
Yes. The key is to make the **backup storage itself immutable**, not merely rely on snapshots or a backup server that ransomware could compromise. ### What I’d recommend **Veeam Backup & Replication + an immutable repository** is a strong general-purpose design.
Yes. The key is to make the backup storage itself immutable, not merely rely on snapshots or a backup server that ransomware could compromise.
Veeam Backup & Replication + an immutable repository is a strong general-purpose design.
A sensible architecture is:
Production servers / VMs
│
▼
Veeam Backup Server
│ │
▼ ▼
Immutable Immutable
Linux Repo Object Storage
(local) (off-site)
│ │
└────┬─────┘
▼
Recovery
If by "snapshots" you mean NAS/storage snapshots, don't assume snapshots alone are ransomware-proof. An attacker who gains administrative access to the storage system may be able to delete them.
Instead, look for WORM/immutability or retention-lock functionality where even an administrator or compromised backup server cannot remove the protected data until its retention period expires. Veeam explicitly supports immutable repositories, while S3 Object Lock provides this at the object-storage layer.
I'd target:
If you tell me what you're backing up (Windows PCs, VMware/Hyper-V, Microsoft 365, NAS, SQL Server, etc.), how much data you have, and whether you want on-prem, cloud, or both, I can recommend a specific setup and approximate hardware/storage requirements.
If by "snapshots" you mean NAS/storage snapshots, don't assume snapshots alone are ransomware-proof. An attacker who gains administrative access to the storage system may be able to delete them.
Instead, look for WORM/immutability or retention-lock functionality where even an administrator or compromised backup server cannot remove the protected data until its retention period expires. Veeam explicitly supports immutable repositories, while S3 Object Lock provides this at the object-storage layer.
I'd target:
To truly stop ransomware from deleting or encrypting your backups, you need **WORM (Write Once, Read Many)** or **Object Locking** technology . Even if an attacker compromises your primary admin credentials, the system level clock or storage lock physically or logically rejects any deletion/modification command until…
To truly stop ransomware from deleting or encrypting your backups, you need WORM (Write Once, Read Many) or Object Locking technology . Even if an attacker compromises your primary admin credentials, the system level clock or storage lock physically or logically rejects any deletion/modification command until the retention period expires.
The most effective, industry-standard immutable backup solutions are structured across different layers:
To implement a bulletproof strategy, adhere to the 3-2-1-1 Rule:
To help narrow down the right option, tell me:
