GITNUXSOFTWARE ADVICE
Storage Moving RelocationTop 10 Best File Server Migration Software of 2026
Ranked roundup of top file server migration software tools, covering Carbonite Migrate, Cloudsfer, and MigrationWiz for IT teams comparing fit and tradeoffs.
How we ranked these tools
Vendors set the topic, but our editors set the inclusion criteria and the evaluation framework before research starts.
Agents extract product evidence with provenance, then collect written reviews and transcribe video reviews and podcasts.
Framework: Features 40% · Ease 30% · Value 30%
Gitnux may earn a commission through links on this page — this does not influence rankings. Editorial policy
Carbonite Migrate is the best fit if you need controlled SMB file share migrations with repeatable sync and permission mapping across physical, virtual, and cloud environments, whereas Cloudsfer works well for share-level job control and consistent permissions mapping during staged cutovers.
Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
Carbonite Migrate
Security principal mapping and permission translation controls target NTFS access continuity during staged cutover.
Best for: Fits when teams need controlled SMB file share migrations with repeated sync and permission mapping.
Cloudsfer
Editor pickCentralized migration job orchestration that keeps permissions mapping and execution status tied to each share.
Best for: Fits when migration teams need share-level job control and consistent permissions mapping across staged cutovers.
MigrationWiz
Editor pickSecurity principal mapping ties migrated access to the target identity set during permission translation.
Best for: Fits when migration teams need controlled ACL mapping and resumable staged transfers.
Comparison Table
Carbonite Migrate
enterpriseCarbonite Migrate transfers server workloads and data between physical, virtual, and cloud environments.
Security principal mapping and permission translation controls target NTFS access continuity during staged cutover.
Carbonite Migrate is designed for on-premises file share migration where share content, metadata, and security context must carry over into the target environment. It supports staged movement and repeated sync cycles to reduce downtime during final cutover. Migration runs are managed as jobs with logging and status views that help administrators identify skipped objects and permission translation failures.
A key tradeoff is that agent-based collection requires planning host connectivity and lifecycle management for the migration endpoints. Carbonite Migrate fits organizations running multiple file shares across Windows-based storage where security principal remapping, inheritance behavior, and locked-file edge cases must be handled during migration.
- +Job-based migration runs with clear status and per-object failure visibility
- +Repeatable staged sync cycles to reduce downtime at cutover
- +Security principal mapping controls aimed at NTFS permission continuity
- +Migration planning that supports parallel share handling
- –Agent-based deployment adds endpoint connectivity and maintenance overhead
- –Permission translation outcomes can require iterative mapping refinement
- –Higher operational overhead than agentless options for small share moves
Enterprise IT migration teams
Large SMB share moves with staged sync
Reduced downtime window
Identity and access administrators
NTFS permissions and principal remapping
Fewer access regressions
Show 1 more scenario
Data center consolidation project managers
Parallel migration across many shares
Repeatable migration operations
Coordinates multiple share jobs with monitored progress and failure diagnostics.
Best for: Fits when teams need controlled SMB file share migrations with repeated sync and permission mapping.
Cloudsfer
SMBCloudsfer transfers files between local storage, file servers, cloud drives, and cloud platforms.
Centralized migration job orchestration that keeps permissions mapping and execution status tied to each share.
Cloudsfer provides an execution workflow for file share migration that organizes discovery inputs into migration jobs and tracks progress at the share level. Migration configuration supports selecting source shares and destinations, then applying consistent permissions mapping so users and groups remain aligned after move. Operations teams get fewer moving pieces because connectivity, orchestration steps, and status visibility sit in the same migration workflow.
A key tradeoff is that deeper custom automation depends on the available integration surface, so complex app-specific rerouting often requires external scripting around the migration workflow. Cloudsfer fits staged migrations where teams run batches, validate outcomes, then repeat with tightened scope before a final cutover window.
- +Share-scoped migration jobs make run tracking and batch cutovers easier
- +Centralized permissions mapping reduces manual ACL rework
- +Configuration reuse supports repeatable staged migration waves
- +Operational status visibility supports validation during execution
- –Complex edge cases may require manual remediation after mapping
- –Automation depth is limited for bespoke workflows beyond job configuration
- –Execution tuning for throughput relies on operational discipline
- –Open-file and lock-heavy workloads need extra planning
IT migration teams
Run staged batches of SMB shares
Reduced cutover downtime risk
Identity and access administrators
Preserve NTFS access continuity
Fewer permission-related tickets
Show 1 more scenario
Infrastructure operations
Consolidate file servers into fewer targets
Lower operational overhead
Multiple shares move through repeatable job configuration instead of one-off scripts.
Best for: Fits when migration teams need share-level job control and consistent permissions mapping across staged cutovers.
MigrationWiz
cloud migrationMigrationWiz moves file shares and user data to Microsoft 365 and other hosted destinations.
Security principal mapping ties migrated access to the target identity set during permission translation.
MigrationWiz targets migrations where Windows identity continuity and permission fidelity matter. It provides share and permission mapping that includes ACL handling and security principal remapping to align migrated access with the original environment. The workflow supports incremental stages so content transferred in earlier passes can be updated before final cutover. Centralized project management helps teams keep multiple share migrations under one plan.
A key tradeoff is that agent-based collection requires deployment and maintenance on source systems to achieve consistent throughput and file-level handling. MigrationWiz fits best when migrations need controlled scheduling, repeatable permission mapping, and resumable transfers for large file shares rather than one-time ad hoc copies. It is less ideal for environments that require strictly agentless execution or where source server access cannot support agent installation.
- +Permission mapping covers ACL translation and security principal remapping workflows
- +Checkpointing supports resumable transfers across long-running share migrations
- +Staged execution supports incremental updates before final cutover
- +Configuration reuse helps manage many source shares under one migration plan
- –Agent-based operation requires source system installation and upkeep
- –High-fidelity permission mapping needs careful identity source mapping planning
- –Large migrations depend on capacity planning for connector throughput
- –Some edge cases require manual validation during cutover
Enterprise migration teams
Windows file shares to Microsoft 365
Fewer permission and cutover issues
IT operations at mid-market firms
Multi-server file share consolidation
Consistent results across servers
Show 1 more scenario
Security and compliance owners
Controlled access preservation during moves
Access continuity for users
Validate and translate ACLs to align migrated access with existing security models.
Best for: Fits when migration teams need controlled ACL mapping and resumable staged transfers.
ShareGate
SMBShareGate migrates file shares and content into SharePoint and Microsoft 365.
Prebuilt migration workflows for SharePoint destination provisioning and permission handling, so mapping and site placement stay consistent across runs.
ShareGate focuses on SharePoint and Microsoft 365 migrations, with file server migration support centered on SMB copy and permission mapping workflows. Its migration engine pairs file content moves with SharePoint destination provisioning so teams can control where data lands in sites, document libraries, and folders.
- +Permission mapping built for Microsoft 365 destinations, including NTFS to SharePoint alignment
- +Migration project configuration supports staged runs that reduce repeat work during cutover
- +Detailed migration reports show item counts and failures at the task level
- +Admin workflow supports delegation and centralized oversight of migration tasks
- –Requires careful governance of destination site structure and library naming to avoid reroutes
- –Locked or frequently changing files can increase the need for incremental passes and verification
- –Large estate migrations demand disciplined scoping to keep throughput from becoming the bottleneck
- –SMB source coverage depends on environment compatibility and storage behavior across file shares
Best for: Fits when Microsoft 365 sites and governance drive the destination plan, and file migrations must include repeatable permission handling.
Resilio Connect
enterpriseResilio Connect transfers and synchronizes large file sets across servers, offices, and cloud locations.
Delta-based re-synchronization lets teams pause and resume migration runs without re-copying unchanged data.
Resilio Connect performs agent-based file share migration and ongoing synchronization between source and destination endpoints. It supports staged transfers with delta updates so large datasets can move incrementally and re-sync before cutover.
- +Incremental synchronization supports re-running transfers before cutover
- +Transfer automation via API enables scheduled and programmatic job control
- +Agent-based design reduces dependency on source SMB tooling
- +Granular permissions limit who can administer sync and view status
- –Cutover workflows require careful planning for permission and identity mapping
- –High file counts can create overhead during initial scans and indexing
Best for: Fits when large file shares need repeatable incremental moves with automation controls.
Treesize File Server Migration
SMBFile server migration module from JAM Software with NTFS permission and ACL transfer.
Permission and attribute aware migration jobs that pair inventory reporting with NTFS ACL translation to reduce cutover guesswork.
TreeSize File Server Migration targets administrators who need controlled file share migration with attention to permissions and folder structure. The tool focuses on pre-migration analysis and migration execution workflows that map NTFS permissions and preserve file attributes during transfer.
- +Permission mapping workflows target NTFS ACL translation during migration runs
- +Pre-migration inventory reporting helps validate source scope before copy jobs
- +Job-based execution supports staged migrations across multiple shares
- +Configurable migration settings cover common metadata preservation needs
- –More work is required to align security principal mapping for complex identity layouts
- –Large estates can increase scan and planning time before execution begins
- –Automation depth beyond the core console and reports is limited for advanced orchestration
- –Handling for open files and locked files depends on operational readiness planning
Best for: Fits when teams need staged file share migration with permission-focused reporting and repeatable job runs.
Quest Migration Manager for File System
enterpriseQuest Migration Manager for File System moves files, shares, permissions, and security data between servers.
Security principal mapping integrated into NTFS permission translation to reduce post-migration ACL repair work.
Quest Migration Manager for File System focuses on Windows file server migration workflows that move SMB shares while preserving NTFS security settings. It includes a staged migration approach with prechecks, mapping of users and groups to the destination security principals, and job orchestration for controlled cutover.
- +Project-based migration jobs with staged execution controls
- +Built-in security principal mapping for NTFS permission translation
- +Prechecks for common migration blockers before cutover
- +Granular job monitoring for share and folder processing progress
- –Windows-centric workflow can add friction for mixed-platform share estates
- –Correct security mapping requires careful directory identity alignment
- –Large estates may demand significant pre-staging to keep run times predictable
- –Automation surface is largely job-driven rather than scriptable for every step
Best for: Fits when Windows file servers need controlled SMB share migrations with NTFS ACL translation and principal mapping.
Cirrus Data Migration Server
enterpriseCirrus Data Migration Server performs online block-level migrations between storage systems.
Resumable migration jobs track progress so interrupted transfers can resume without redoing completed segments.
Cirrus Data Migration Server targets file server migration with an agent-based workflow for copying and cutover stages. It focuses on handling share-level data movement and permission preservation so NTFS access control lists stay consistent through the transfer.
- +Job-based execution supports restart after failed migration runs
- +Configurable throughput controls help manage network and disk pressure
- +Share-scoped migration keeps source scope aligned to target shares
- +Permission preservation supports ACL transfer during migration
- –Incremental synchronization depth depends on job configuration
- –Agent rollout and endpoint hardening add operational overhead
Best for: Fits when teams need controlled, job-based file share replacement with permission preservation and staged cutover.
PeerGFS
enterprisePeerGFS replicates and synchronizes files across distributed Windows and NAS environments.
Job-level orchestration for SMB share migrations that supports reruns to progress large migrations without restarting from scratch.
PeerGFS performs file server migrations by orchestrating SMB share copy workflows that preserve folder structure and contents during cutover planning. The product centers on mapping source paths and targets so migrated data lands in the intended namespace, including configuration for which shares move and how they progress.
- +Share-by-share migration workflow with clear source-to-target mapping
- +Iterative copy behavior supports staged reruns for large migrations
- +Operational job outputs make it easier to pinpoint failed paths
- +Namespace placement keeps migrated folders aligned to target structure
- –Limited visibility into permission translation edge cases versus ACL-aware tools
- –Requires careful planning of cutover timing to avoid access conflicts
- –Less automation depth for enterprise governance than tools with policy engines
- –Workflow coverage depends on the SMB-focused migration path
Best for: Fits when SMB file share migrations need controlled staging, predictable namespace placement, and rerunnable copy jobs.
Komprise Elastic Data Migration
enterpriseAgentless file migration with parallel transfer, metadata preservation, and incremental sync.
Elastic discovery and policy-driven migration planning that turns file estate telemetry into controlled migration actions.
Komprise Elastic Data Migration targets file server migration and data movement with an agent-based discovery and migration workflow that focuses on file-by-file control. It builds migration plans from observed storage usage, then applies policies for what to copy or skip, which helps reduce unnecessary transfer during large migrations.
- +Policy-driven migration planning reduces transferred data volume in large estates
- +API and automation support repeatable orchestration for migration waves
- +Governance-oriented discovery data supports staged cutovers with oversight
- +Operational visibility helps track migration progress across many paths
- –Setup and governance discipline are needed to keep plans aligned with intent
- –Complex environments can require careful tuning for throughput and schedules
Best for: Fits when large file estates need governed planning and repeatable automation for multi-wave migrations.
Conclusion
After evaluating 10 file server migration software, Carbonite Migrate stands out as our overall top pick — it scored highest across our combined criteria of features, ease of use, and value, which is why it sits at #1 in the rankings above.
Use the comparison table and detailed reviews above to validate the fit against your own requirements before committing to a tool.
How to Choose the Right File Server Migration Software
File server migration software is used to move SMB and NTFS-secured file shares through controlled cutover cycles while keeping permissions continuity and reducing manual ACL repair work. This guide covers Carbonite Migrate, Cloudsfer, MigrationWiz, ShareGate, Resilio Connect, TreeSize File Server Migration, Quest Migration Manager for File System, Cirrus Data Migration Server, PeerGFS, and Komprise Elastic Data Migration.
Each tool card centers on migration execution mechanics like job orchestration, resumable runs, permission mapping workflows, and automation or API surface that affects how repeatable cutovers stay across multiple waves.
Pick migration execution mechanics that match cutover risk and identity mapping scope
A file server migration program needs two separate capabilities: correct access translation and repeatable execution behavior under operational disruption. The tools in this list diverge sharply on how they structure jobs, how they map identities, and how they handle re-runs around cutover windows.
The decision should follow the organization’s migration pattern. Teams doing repeated staged cutovers typically need share-scoped orchestration and permission mapping controls, while teams managing very large estates benefit from delta resynchronization or elastic planning to keep wave execution governed.
Match staged cutover behavior to the re-run model that operations can support
If the plan expects repeated sync cycles before cutover, Carbonite Migrate’s repeatable staged sync cycles and per-object failure visibility support controlled SMB moves. If the plan expects frequent pause and resume without recopying unchanged data, Resilio Connect’s delta-based re-synchronization reduces transfer churn during iterative cutover preparation.
Select a permission translation approach aligned to identity remapping complexity
If identity sets must be remapped during access translation, MigrationWiz ties migrated access to the target identity set and uses checkpointing to keep staged transfers recoverable. If the estate is Windows-centric and requires integrated security principal mapping into NTFS permission translation, Quest Migration Manager for File System targets post-migration ACL repair reduction through built-in principal mapping.
Choose job orchestration scope that matches how the team assigns ownership
If migration teams run batch cutovers per share with consistent permissions mapping and execution status, Cloudsfer’s share-scoped migration jobs keep tracking aligned to operational ownership. If the workflow needs share-by-share reruns with predictable namespace placement, PeerGFS provides iterative copy behavior that progresses large migrations without starting over.
Decide whether the destination placement model is governed or configured per project
If Microsoft 365 governance and destination structure drive the migration plan, ShareGate’s prebuilt workflows handle SharePoint destination provisioning and permission handling so runs stay repeatable. If the destination is not Microsoft 365 driven and the requirement is planning and action orchestration across waves, Komprise Elastic Data Migration uses elastic discovery and policy-driven migration planning to convert file estate telemetry into governed migration actions.
Assess how throughput controls and operational recovery behave under large inventories
If constrained network or disk pressure requires throughput controls while keeping resumable execution, Cirrus Data Migration Server offers configurable throughput controls and restart-after-failure job execution. If planning and scan time are a major constraint, TreeSize File Server Migration’s pre-migration inventory reporting supports scope validation but large estates increase scan and planning time before execution begins.
Teams that will get measurable cutover control from these migration mechanics
File server migration software is most valuable when cutover risk is dominated by permission continuity and repeatable re-runs. The strongest fit cases are teams that run staged cutovers, manage identity mapping complexity, and need auditable execution status at the right scope.
The tools here also separate along operational model lines. Some products focus on job execution and permission mapping for controlled SMB share migrations, while others focus on governed planning and destination provisioning workflows.
Windows file server teams migrating SMB shares with NTFS permission continuity requirements
Carbonite Migrate and Quest Migration Manager for File System integrate security principal mapping into NTFS permission translation to target access continuity during staged cutover.
Migration teams running multiple waves and requiring share-scoped job orchestration
Cloudsfer keeps permissions mapping and execution status tied to each share so migration operations can manage batch cutovers with clear run tracking and fewer manual ACL rework cycles.
Organizations executing large share migrations where interruptions must not restart work
Cirrus Data Migration Server supports restart after failed runs with progress tracking, while MigrationWiz uses checkpointing so long-running share migrations can resume across failures.
Microsoft 365 governance-driven migrations that must keep destination provisioning repeatable
ShareGate includes prebuilt workflows for SharePoint destination provisioning and permission handling so destination placement and permission alignment stay consistent across runs.
Enterprises needing governed migration planning across multi-wave file estates
Komprise Elastic Data Migration provides elastic discovery and policy-driven migration planning with API and automation support for repeatable orchestration of migration waves.
How We Selected and Ranked These Tools
We evaluated each file server migration product on integration depth for permissions mapping, execution mechanics for staged cutover, and the automation and API surface that supports repeatable migration runs. Features accounted for 40% of the scoring because permission translation controls, resumable behavior, and share-scoped orchestration change cutover outcomes more than packaging.
Ease and value accounted for 30% each because operational overhead from agent deployment and identity mapping planning affects real migration timelines. Carbonite Migrate earned the top rank because security principal mapping and permission translation controls target NTFS access continuity during staged cutover and because its job-based runs provide clear per-object failure visibility with repeatable staged sync cycles.
Frequently Asked Questions About File Server Migration Software
How do Carbonite Migrate and Resilio Connect handle incremental synchronization before cutover?
What breaks if permission mapping does not preserve NTFS ACLs during a Windows file server replacement?
Which tool provides security principal mapping controls that target access continuity during staged cutover?
When does staged migration job orchestration matter more than one-off file copying for multiple shares?
How do Komprise Elastic Data Migration and Treesize File Server Migration differ in how they plan what to copy?
What is the tradeoff between resumable execution and tight governance in agent-based migration workflows?
Which tools provide an API or automation surface for coordinating migration runs across infrastructure?
How does ShareGate connect SMB file migration to Microsoft 365 destination provisioning?
How do migration tools handle file states during reruns, such as already-copied content?
Tools reviewed
Primary sources checked during evaluation.
Referenced in the comparison table and product reviews above.
Funding and competing interests
This study was co-funded by several of the vendors assessed in it. No single vendor funded it. Funders could propose the market studied.
They had no role in selecting vendors, setting or weighting criteria, analysing data or drawing conclusions, and they received the same factual-accuracy check as every other vendor assessed.
Market definition, inclusion rules and criteria weights were fixed by an editor before research began and did not change afterwards. Editorial process →
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