How FolderSizes Facilitates Windows File System Migrations
Whether you're consolidating file servers, moving to new storage hardware, or restructuring network shares, a file system migration succeeds or fails on what you know before you start moving data. FolderSizes gives migration projects the visibility, cleanup tools, and verification evidence they need at every phase.
Why Migrations Go Wrong
Most migration pain traces back to a handful of unknowns: how much data there really is, who owns it, which file types dominate it, and how much of it is junk. Moving unexamined storage means paying network bandwidth, migration windows, and destination capacity for duplicate files, temporary content, and data owned by accounts that no longer exist.
Planning: Know What You're Moving
- Measure the source - scan local drives, network shares, and entire directory structures to get exact folder-by-folder size data, and use folder search by cumulative size to flag migration candidates that would exceed destination capacity limits.
- Profile the content - the File Types report shows which formats consume the space, informing dedup, compression, and archiving decisions.
- Map ownership - the file owners report reveals which users consume the most storage and flags orphaned files whose owners appear as raw SID strings (departed employees, deleted service accounts).
Pre-Migration Cleanup
Every gigabyte you clean up is a gigabyte you don't migrate. Use the duplicate file finder, temporary files report, and oldest files report to remove or archive offline the data that shouldn't make the trip. Smaller payloads mean shorter migration windows and less bandwidth contention.
Snapshot Before, Snapshot After
File system snapshots capture the complete metadata state of any drive, folder, or share into a portable file. Take one before migration as the authoritative record of the source; take another after cutover and use snapshot comparison to see precisely what changed - the fastest way to prove nothing was lost in transit.
Executing and Documenting the Move
FolderSizes' built-in file operations move, copy, or archive files and folders directly from analysis results - creating destination folders automatically, retaining folder structure, and deleting through the Windows Recycle Bin. Every report along the way can be exported to Excel, PDF, HTML, CSV, or XML for stakeholder communication, and the scheduler can automate recurring pre- and post-migration reporting.
Don't Forget Permissions
FolderSizes tells you what exists and who owns it; NTFS permissions deserve their own audit. Our companion product Permissions Reporter documents the source's access-control structure before migration so you can verify permissions survived the move intact.