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SPECIFICTION
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StoneFly Migrate

stonefly.com

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Spec score 7.4 #15 of 25 in Storage Migration Software

What it is

StoneFly Migrate transfers unstructured NFS and CIFS/SMB data volumes over LAN or WAN. It supports scheduled migration jobs and real-time replication for those volumes, with a centralized console for managing jobs and monitoring resource consumption. Files are divided into smaller data sets, transferred in parallel and recombined at the destination. Hash checks verify individual shards; if one is corrupted, that shard can be retransferred rather than sending the whole file again. The software also analyzes CPU, memory and network resources and dynamically assigns them to processes.

StoneFly presents it for moving NAS volumes to new appliances, maintenance moves, offloading infrequently accessed data to capacity tiers and syncing critical volumes. The software is free, with no data-transfer limit, but technical support and professional services are sold separately. It is delivered as an OVA virtual machine and is compatible with VMware; the FAQ also lists VMware, Hyper-V, KVM, Citrix and XenServer for virtual NAS deployments. For physical NAS to virtual NAS transfers, both appliances must be on the same subnet. File transfers can be encrypted.

Spec sheet

Purpose
StoneFly Migrate transfers unstructured NFS and CIFS/SMB data volumes over LAN or WAN.Read 8 Oct 2026 · stonefly.com
Deployment
StoneFly's setup guide says the software is delivered as an OVA virtual machine and is compatible with VMware.Read 8 Oct 2026 · stonefly.com
Trial
The product FAQ says the software is available free and explicitly says it is not a free trial.Read 8 Oct 2026 · stonefly.com
Support
The free software does not include technical support or professional services; StoneFly says those can be purchased separately.Read 8 Oct 2026 · stonefly.com
Headquarters
Castro Valley, Hayward, California, United StatesRead 28 Sep 2026 · stonefly.com
Founded
1996Read 28 Sep 2026 · stonefly.com
Capacity limit
The FAQ says there is no data transfer limit and users can migrate as many terabytes as needed for free.Read 8 Oct 2026 · stonefly.com
Hypervisors
The FAQ lists VMware, Hyper-V, KVM, Citrix, and XenServer for virtual NAS deployments.Read 8 Oct 2026 · stonefly.com
Integrity checks
Hash checks verify individual data shards, and a corrupted shard can be retransferred without sending the whole file again.Read 8 Oct 2026 · stonefly.com
Management
A centralized console manages migration jobs and monitors resource consumption in real time.Read 8 Oct 2026 · stonefly.com
Migration workflows
It supports scheduled migration jobs and real-time replication for CIFS or NFS volumes.Read 8 Oct 2026 · stonefly.com
Network constraint
For physical NAS to virtual NAS transfers, the FAQ says both NAS appliances must be on the same subnet.Read 8 Oct 2026 · stonefly.com
Resource management
The software analyzes CPU, memory, and network resources and dynamically allocates them to processes.Read 8 Oct 2026 · stonefly.com
Security and compliance
StoneFly's setup guide says users can encrypt file transfers to protect them from unauthorized access and support compliance with industry-standard regulations.Read 8 Oct 2026 · stonefly.com
Transfer method
Files are split into smaller data sets, transferred in parallel, and recombined at the destination.Read 8 Oct 2026 · stonefly.com
Use cases
The product is presented for moving NAS volumes to new appliances, moving data during maintenance, offloading infrequently accessed data to capacity tiers, and syncing critical volumes.Read 8 Oct 2026 · stonefly.com

Plans and prices

StoneFly Migrate Free Free software · no data transfer limit · technical support and professional services sold separately Read 8 Oct 2026 · stonefly.com

Every StoneFly Migrate plan and price →

Strong points and limits

Strong points

  • Supports scheduled jobs and real-time replication
  • Retransmits corrupted shards individually
  • No data-transfer limit
  • Central console monitors resource consumption
  • File transfers can be encrypted

Limits

  • Technical support is sold separately
  • Physical-to-virtual transfers require the same subnet
  • Delivered as an OVA virtual machine

Who it suits

It suits teams moving or replicating NFS or CIFS/SMB volumes between NAS environments. Teams using physical-to-virtual NAS transfers need both appliances on the same subnet.

Verdict

StoneFly Migrate offers free file-volume migration with scheduled and real-time workflows, shard-level integrity checks and no stated transfer cap. Support and professional services cost extra, and physical-to-virtual NAS moves have a subnet constraint.

Where Specifiction places it

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