Cost pressure
Avoid another expensive appliance refresh by deploying backup storage on virtual or physical infrastructure that fits your performance and budget goals.
DPX vStor
Immutable storage for backups
Immutable storage for backups, without appliance lock-in. Catalogic DPX vStor gives backup teams a software-defined repository with WORM-style deletion locks that protect recovery points and restore them quickly, on-premise or virtual.
Storage outcomes
- Lower cost: use software-defined storage instead of committing to another hardware capacity increment.
- Protected data: apply immutable snapshot and deletion protection controls to recovery points.
- Efficient capacity: reduce backup storage pressure with ZFS compression and deduplication.
- Fast recovery: keep backup images close to DPX restore workflows for rapid operational recovery.
Why immutable backup storage is a buying priority
Backup storage decisions now sit at the intersection of ransomware recovery, infrastructure cost, and platform flexibility. DPX vStor addresses all three by combining software-defined deployment, immutable snapshots, efficient storage services, and DPX-integrated recovery.
Ransomware resilience
Use immutable snapshots and deletion protection to reduce the risk that recovery points are modified or removed during an incident.
Platform freedom
Keep backup storage independent of any single hypervisor or hardware appliance family as infrastructure changes.
vStor software-defined immutable backup storage
vStor is the DPX backup repository designed to lower appliance dependency while strengthening recovery-point protection. It can serve as a DPX primary backup destination and supports common backup and restore workflows for block and agentless protection.
- Deploy vStor as a virtual appliance or on a physical server, without committing capacity growth to a hardware vendor's increments.
- Use existing storage investments where appropriate, while still giving DPX a managed backup destination.
- Apply immutable snapshot controls and deletion protection to preserve recovery points.
- Reduce storage growth with ZFS compression and deduplication where workload characteristics allow.
- Replicate backup data to another vStor target for site resilience, remote office protection, and recovery planning.
- Integrate with DPX recovery workflows across supported physical, virtual, and application workloads.
From appliance purchasing to software-defined storage
The appliance lock-in problem
Purpose-built backup appliances can be convenient at first, but many organizations discover the lock-in later. Capacity is purchased in appliance-sized steps. Performance upgrades often require another hardware quote. Storage refreshes become tied to a vendor roadmap rather than the organization’s infrastructure plan. When data grows faster than expected, the backup team may be forced into an unplanned expansion just to keep retention targets intact.
That model is especially difficult when IT teams must improve ransomware recoverability, expand virtualization coverage, support edge sites, and control costs at the same time. A storage platform that only scales through proprietary appliance purchases can turn backup into a capital planning problem instead of an operational resilience strategy.
How vStor changes the storage model
Catalogic DPX vStor takes a software-defined approach. Instead of forcing the backup architecture around a specific appliance, vStor lets DPX use a flexible backup repository that can be deployed on a physical machine or in a virtual environment. That gives infrastructure teams more control over where backup storage lives, how it scales, and how it maps to existing server, disk, and virtualization investments.
vStor combines cost control with backup-aware storage for DPX. It is built to hold backup images, expose snapshots for verification and recovery, support replication, and apply protection controls that make recovery points harder to delete or modify. The repository supports financial flexibility and cyber resilience at the same time.
Two deployment patterns
Primary vStor repository
The simplest deployment pattern is to use vStor as the primary DPX backup destination. In this model, DPX jobs write protected backup data to vStor volumes, and vStor provides the repository services needed for efficient retention and restore. This pattern is useful for organizations replacing a legacy backup target, avoiding a new appliance purchase, or consolidating backup storage around a DPX-managed repository.
A primary vStor repository can be sized for the workloads it protects. The sizing discussion should include front-end protected data, change rate, retention period, expected deduplication or compression behavior, restore concurrency, and the performance profile of the underlying storage. A database-heavy environment will behave differently from a set of repeated VM images, and a remote office repository will have different ingest and restore demands than a data center repository. vStor retains the need for sizing discipline while giving the team a more flexible platform for applying it.
This pattern is often the best fit when the main problem is appliance replacement or backup storage modernization. The team gets a DPX-aware repository, immutable snapshot options, and capacity efficiency features without committing every future storage decision to a proprietary backup appliance lifecycle.
Protected replication target
A second pattern is to use vStor as a replication target for protected backup data. This is valuable when the organization needs another recoverable copy at a separate site, in a central data center, or in a location with stronger operational controls. Replication can support disaster recovery, ransomware response, and regional resilience planning, but only if the target copy is protected from the same deletion or corruption risks that threaten the source environment.
vStor supports deletion protection for replicated snapshots. Teams can configure replication relationships so that uploaded snapshots receive protection on the target. This turns the target repository into more than a passive copy. It becomes a controlled recovery location where snapshots can be preserved according to the organization’s protection policy.
This pattern is useful for remote office protection, secondary site resilience, and ransomware recovery planning. For example, a branch office can keep local recovery points for common operational restores while replicating protected snapshots to a central vStor target. If the branch is unavailable, or if local backups are suspect, DPX can use the replicated copy as part of the recovery plan.
Immutable storage planning checklist
Use this checklist when comparing DPX vStor with fixed-capacity hardware appliances or unmanaged storage targets. The goal is to evaluate storage as part of the full recovery workflow.
| Planning area | Question to answer | How vStor helps |
|---|---|---|
| Cost model | Can backup storage grow without forcing large appliance refreshes? | vStor uses a software-defined deployment model that can run on virtual or physical infrastructure. |
| Ransomware protection | Can protected snapshots resist accidental or unauthorized deletion? | vStor supports immutable snapshots, deletion protection, and MFA-backed protection controls. |
| Capacity efficiency | Can the repository reduce storage pressure as data grows? | ZFS compression and deduplication reduce capacity needs by an amount that depends on the workload's data patterns. |
| Recovery speed | Can the team restore from the repository without unnecessary copy or staging delays? | vStor is integrated with DPX backup and restore workflows for operational recovery. |
| Site resilience | Can a second copy be replicated and protected? | vStor replication can protect replicated snapshots on the target repository. |
| Platform change | Can the storage architecture stay useful as virtualization platforms change? | vStor keeps backup storage software-defined while DPX protects supported workloads. |
The right storage design depends on protected data, change rate, retention, restore targets, and infrastructure constraints. A DPX demo or sizing conversation should validate these assumptions before deployment.
How vStor resolves the buying objections
Immutable backup storage has to satisfy both technical administrators and budget owners. vStor gives each group a concrete answer.
For backup admins
A DPX-aware repository for block and agentless backups, snapshot-based recovery workflows, and protected recovery points.
For infrastructure teams
Software-defined deployment on physical or virtual infrastructure instead of a fixed appliance-only model.
For security teams
Immutable snapshot controls, deletion protection, MFA-backed protection management, and stronger ransomware recovery design.
For finance teams
A path to reduce appliance lock-in, reuse appropriate infrastructure, and manage capacity with compression and deduplication.
Immutable storage, explained
Background reading on how immutability works, what it costs, and how to design around it.
Backup Storage & Infrastructure
Immutable Storage for Backups Without Appliance Lock-In
Fixed-capacity hardware appliances buy immutability in vendor-sized increments. What that costs over a refresh cycle, and what changes when the storage layer is software-defined.
Backup Strategy & Best Practices
Planning Immutable Storage: What to Keep Local, What to Replicate, and How to Prove It Works
Two questions decide an immutable storage design: which recovery points need to be where, and how the team will prove a restore works. Plus three worked scenarios.
Backup Storage & Infrastructure
What Is Immutable Storage? WORM, Deletion Locks, and What They Actually Protect
Immutable storage keeps data from being changed or deleted for a set period. How it differs from WORM, how deletion locks actually work, and what it does and does not protect against.
Related DPX and vStor resources
Use these pages to continue building an internal linking path around DPX storage, cyber resilience, workload coverage, and recovery planning.
DPX vStor product overview
Learn how vStor provides software-defined immutable backup storage for DPX.
Catalogic DPX overview
Explore the DPX backup and recovery platform that uses vStor as a primary backup destination.
WORM vs. immutability
The distinction behind every immutability requirement, and which mechanism delivers which guarantee.
Cyber-resilient recovery
See how GuardMode, backup verification, immutable snapshots, and clean restore points support ransomware recovery.
GuardMode ransomware detection
Understand the DPX ransomware detection layer that complements immutable storage.
Immutable backup storage FAQ
What does immutable backup storage mean?
Immutable backup storage protects recovery points from modification or deletion for a defined period or under defined protection controls. In vStor, immutable snapshots and deletion protection preserve backup data against accidental deletion, unauthorized deletion, and ransomware-driven attempts to remove recovery points. [WORM vs. immutability](/blog/worm-vs-immutability-essential-insights-into-data-protection-differences/) covers how the two differ, and [secure immutable backup on-prem](/blog/secure-immutable-backup-onprem/) walks through it without a cloud dependency.
How does vStor reduce appliance lock-in?
vStor is software-defined backup storage for DPX. It can be deployed as a virtual appliance or on physical infrastructure, letting organizations design backup repositories around their own performance, capacity, and budget needs instead of being limited to a hardware vendor's expansion increments.
Does vStor support deduplication and compression?
Yes. vStor uses ZFS storage services, including compression and deduplication. Actual space savings depend on workload type and data patterns, but repeated backup data, VM images, logs, and databases are common candidates for meaningful reduction.
How does vStor help ransomware recovery?
vStor protects snapshots with deletion locks and immutability controls, extends that protection to replicated snapshots on the target, and keeps backup data inside DPX recovery workflows. Pair it with GuardMode and the DPX cyber-resilient recovery workflow to find a clean recovery point rather than merely a surviving one.
Where can I read the product documentation?
See the official vStor documentation and DPX documentation for detailed product configuration, storage, backup, and recovery guidance.
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Immutable backup storage without appliance lock-in
See how DPX vStor cuts storage cost and protects recovery points as your infrastructure changes.
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