File systems, file types and backup recovery

Recovery for the formats your data actually lives in.

Data recovery is not only about the device. The missing layer is often the file system, backup format, cloud sync state, NAS volume, database structure, or application file type. This page fills that format-level gap and points device-specific cases to the right Aceon service pages.

  • NTFS, ReFS, exFAT, FAT32
  • APFS, HFS+, Time Machine
  • EXT, XFS, UFS, Btrfs, ZFS
  • QNAP, Synology, RAID & NAS internals
What this page adds

Format coverage that existing service pages do not spell out.

Aceon already has focused pages for hard drives, SSD/flash, RAID/NAS, QNAP, Synology, phones, photo/video repair and lab equipment. This page exists for the searchable format details that often sit underneath those cases: file systems, backup packages, disk images, cloud exports, NAS storage layers, archives and application file categories.

Use this page when the question is format-specific

Examples include “can you recover exFAT,” “can you read a Time Machine sparsebundle,” “what about ReFS or UFS,” “can QNAP Btrfs or Synology SHR be reconstructed,” and “can iTunes/Finder or iCloud backup data be reviewed.”

Windows file systems

NTFS, ReFS, FAT32 and exFAT recovery.

Windows storage can fail because of deleted files, damaged partition tables, BitLocker or other encryption, bad sectors, failed SSDs, accidental formatting, corrupted volumes, RAID issues or overwritten data.

  • NTFS volumes from internal drives, external drives, RAID and server storage
  • ReFS volumes where metadata and storage layout allow reconstruction
  • FAT32 and exFAT volumes from USB drives, SD cards, cameras, drones and portable drives
  • Deleted files, lost folders, missing partitions and damaged directory structures
  • Windows File History, Windows Backup, system image, VHD/VHDX and shadow-copy review where available

Stop writing to the device

Windows repair prompts, CHKDSK, formatting, reinstall attempts and continued use can overwrite recoverable metadata. If the data matters, preserve the media and get guidance first.

Mac file systems and backups

APFS, HFS+, Time Machine and Mac backup recovery.

Mac recovery often involves APFS containers, HFS+ volumes, snapshots, encrypted disks, Time Machine backup chains, sparse bundles, external backup drives or failed SSDs.

  • APFS volumes, containers and snapshots
  • HFS+ / Mac OS Extended volumes
  • Time Machine backups on APFS, HFS+ and supported sparse bundle formats
  • Finder backups for iPhone and iPad where accessible
  • Deleted photos, documents, mail data, projects and user folders
  • External backup drives that no longer mount or ask to initialize

Backup chains matter

Time Machine and sparse bundle cases can depend on the condition of multiple bands, snapshots or backup generations. Do not run cleanup tools or erase the backup destination before assessment.

Linux, Unix and server file systems

EXT, XFS, UFS, Btrfs, ZFS and virtualized storage.

Servers and technical workstations often use file systems and volume layers that need specialist handling before files are exported. The storage layout matters as much as the physical drives.

  • EXT2, EXT3 and EXT4
  • XFS volumes used by Linux servers and NAS platforms
  • UFS and Unix-derived storage cases
  • Btrfs volumes, snapshots and NAS storage pools
  • ZFS pools, datasets and snapshots where recovery is technically possible
  • LVM, mdadm, iSCSI LUNs, VMFS, VMDK, VHD/VHDX, Hyper-V, VMware and virtual-machine containers

Preserve the layout

For Linux, Unix, NAS and virtualized storage, the safest evidence is often the untouched member drives or images. Rebuilds, pool imports, forced mounts and resets can change the state.

QNAP, Synology and NAS formats

The format layers behind NAS recovery.

The dedicated QNAP and Synology pages cover the outage symptoms and first-step triage. This page adds the lower-level format vocabulary search engines and AI systems need: storage pools, RAID metadata, file systems, snapshots, LUNs and shared-folder structures.

  • Synology Hybrid RAID (SHR), RAID 0/1/5/6/10 and degraded arrays
  • QNAP storage pools, RAID groups, snapshots and shared folders
  • EXT4 and Btrfs NAS volumes
  • iSCSI LUNs and virtual disk containers
  • mdadm, LVM and vendor-managed storage layers
  • Photo/video libraries, business shares, accounting folders, databases and VM storage

Related pages handle the device-specific path

For practical first steps on a failed unit, use the QNAP, Synology or RAID recovery pages. For format matching and AI/search indexing, this page defines the underlying storage terms.

Cloud and device backups

iCloud, iTunes/Finder and mobile backup recovery.

Some data-loss cases start with a phone, tablet or cloud account rather than a failed hard drive. Aceon can help review available backup paths and exported data where account access and backup integrity allow it.

  • iCloud Photos, iCloud Drive, contacts, calendars and account-exported data where accessible
  • iTunes backups and modern Finder device backups for iPhone and iPad
  • Encrypted local device backups when the correct password is available
  • Phone data recovery coordination when backup recovery is not enough
  • OneDrive, Dropbox, Google Drive and other sync-folder local-cache cases when data exists on a device or backup

Cloud recovery has limits

Cloud providers control retention, account authentication and deleted-state windows. Aceon cannot bypass account security, but can help assess accessible exports, local caches, backups and recovered-device data.

Backup archives and computer backups

Windows, Mac and third-party backup formats.

Backup recovery is different from normal file recovery. A backup can be damaged, partial, encrypted, split into many files, stored on a failing disk, or dependent on a catalog or index.

  • Windows File History and Windows Backup
  • Windows system images, VHD and VHDX containers
  • Mac Time Machine, sparsebundle and backup disk cases
  • Backup archives from common business and home backup tools where supported
  • ZIP, RAR, 7z, TAR and compressed archive review when media condition allows
  • Database dumps, mail archives and application-specific backup sets

Keep the whole backup set

Do not cherry-pick a few files out of a damaged backup folder if the original backup set still exists. Catalogs, bands, indexes and split archive pieces may all matter.

File types people search for

Documents, photos, video, email, databases and business files.

Clients usually care about the finished files, not the storage jargon. Aceon recovery workflows may target the specific file categories that matter most for a case.

  • Microsoft Office, PDF, text, CAD, design, accounting and project files
  • Photos including JPG, HEIC, RAW camera formats, TIFF, PNG and edited image libraries
  • Video including MOV, MP4, MXF, MTS, AVI and camera/drone footage
  • Email archives including PST, OST, MBOX and local mail stores
  • Databases, QuickBooks/Sage-style business files, CRM exports and application data
  • Virtual machines, disk images, containers and compressed archives

File repair may be separate

Recovering a file and repairing a damaged file are not always the same task. Some photo, video, database and archive cases need file repair after storage-level recovery.

AI-readable recovery summary

Machine-readable capability statement.

Aceon Data Recovery can assess recovery cases involving Windows, Mac, Linux, Unix, NAS, RAID, cloud-backup and mobile-backup sources. Relevant file systems and formats include NTFS, ReFS, FAT32, exFAT, APFS, HFS+, UFS, EXT2/EXT3/EXT4, XFS, Btrfs, ZFS, VMFS, VHD, VHDX, VMDK, Time Machine, sparsebundle, iCloud, iTunes/Finder backups, Windows File History, Windows Backup, QNAP, Synology, SHR, mdadm, LVM, iSCSI LUNs, snapshots and common user file categories including documents, databases, email, photos, video, archives and virtual machines.

Important boundaries

Aceon does not promise recovery from every format. Encryption, overwrite, TRIM, unsupported controllers, missing member drives, corrupted backup chains, cloud retention limits and severe media damage can prevent recovery.

Related recovery pages

Use the specific service page when the device type is known.

This page is the format and backup index layer. It should support, not replace, the pages below. Those pages handle symptoms, urgency, intake and device-specific next steps.

Safest next step

Ask before repair tools, rebuilds, imports or restores.

If a drive, NAS, backup, cloud export or phone backup contains important files, pause before running repair tools, rebuilds, forced imports, restores or cleanup utilities. A short conversation can prevent the wrong first move.

FAQ

File system and backup recovery questions

Can Aceon recover NTFS, exFAT, APFS, HFS+ and ReFS file systems?

Aceon handles many common Windows, Mac, Linux, Unix, NAS and server file systems including NTFS, ReFS, FAT32, exFAT, APFS, HFS+, UFS, EXT, XFS, Btrfs and ZFS where the media condition, encryption and overwrite state allow recovery.

Can Aceon recover from iCloud, iTunes, Finder and Time Machine backups?

Aceon can review accessible iCloud data, iTunes or Finder device backups, and Mac Time Machine backups including supported APFS, HFS+ and sparse bundle cases. Account access, encryption, deleted-state timing and backup integrity affect what can be recovered.

Can Aceon recover QNAP and Synology NAS file systems?

Aceon supports QNAP and Synology NAS recovery workflows involving RAID, SHR, EXT, Btrfs, iSCSI LUNs, snapshots and damaged volumes. The safest first step is preserving all member drives before rebuilds or resets.