What is CAB?

Cabinet (CAB) is Microsoft's native compression archive format, used primarily for Windows software installation packages.

What is VMDK?

VMware Virtual Disk (VMDK) is the virtual hard disk format for VMware virtual machines, used for guest OS storage.

When Should You Use CAB vs VMDK?

Use CAB When...

Reach for CAB when your priority is windows software installation, drivers — its efficient compression makes sharing fast and storage minimal.

Use VMDK When...

Reach for VMDK when your priority is vmware virtual machines, virtual disk storage — its uncompromising quality ensures every detail is preserved.

CAB vs VMDK: Key Differences

•CAB and VMDK diverge on compression: lossy compression for the source, lossless compression for the target.
•The switch from lossy compression to lossless compression means you preserve full quality at the expense of larger file sizes.
•Alpha channel support: VMDK lacks transparency support.
•File sizes: CAB files typically range Comparable to ZIP and VMDK files Up to 2TB per virtual disk, uses sparse allocation.
•Use case fit: CAB targets windows software installation, drivers and VMDK targets vmware virtual machines, virtual disk storage — your choice depends on which workflow stage you are serving.

Advantages of CAB

✓The lossy nature of CAB means file sizes stay reasonable while handling Windows software installation, drivers efficiently.
✓From mobile devices to enterprise servers, CAB is recognized and supported everywhere.
✓Storage and bandwidth costs drop significantly when using CAB thanks to its efficient compression.
✓CAB is a first-class citizen in all major software ecosystems, from creative suites to development environments.

Advantages of VMDK

✓At its core, VMDK relies on lossless encoding — a design choice that makes it perfect for VMware virtual machines, virtual disk storage.
✓You won't run into compatibility issues with VMDK — it's a universal standard across platforms.
✓File size management with VMDK: larger files guaranteed to match the original exactly.
✓Every major application in the VMware virtual machines, virtual disk storage space supports VMDK natively.

Common Use Cases for CAB to VMDK Conversion

Database dumps
Email archive export
Container image layers
Source code distribution
Multimedia asset packaging
Encrypted data transport

Industry Applications

Media PreservationDigital ForensicsEnterprise StorageSoftware DistributionDatabase AdministrationArtifact Management

Best Practices for CAB to VMDK Conversion

→For CAB to VMDK conversion: VMDK provides broad compatibility across operating systems
→Verify archive integrity after creation by testing extraction
→Consider splitting large archives into smaller volumes for easier transfer
→Always keep a backup of your original files before converting
→Choose the appropriate quality settings for your specific use case

Troubleshooting CAB to VMDK Conversion

!VMDK archive is corrupted after converting from CAB → try repairing with built-in archive tools
!Password not working on the converted VMDK archive → verify case sensitivity and special characters
!Extraction of VMDK fails → the archive may be incomplete; try downloading and converting again
!Converting large CAB archives to VMDK times out → split into smaller volumes or reduce compression level

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Convert CAB to VMDK Online - Free & Fast

Convert CAB files to VMDK online for free. High-quality conversion with no registration required.

Archive Converter

Upload or enter a URL to convert CAB to VMDK instantly

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.cab,.CAB (max 100MB)

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About CAB and VMDK

CAB

CAB (CAB archives) - Cabinet, Microsoft compressed archive format. Best for windows software installation, drivers.

VMDK

VMDK (VMDK disks) - VMware Virtual Disk, virtual machine hard disk format. Ideal for vmware virtual machines, virtual disk storage.

Format Comparison

CompressionLossy → Lossless

TransparencySupported

Use CaseConvert from windows software installation, drivers to vmware virtual machines, virtual disk storage

File Size~Up to 2TB per virtual disk, uses sparse allocation after conversion

FAQs

Is converting CAB to VMDK free?

Yes, GoConvertFile offers free conversion of CAB to VMDK for files up to 100MB. No registration required.

How long does it take to convert CAB to VMDK?

Most CAB to VMDK conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.

What is VMDK best used for?

VMDK is ideal for vmware virtual machines, virtual disk storage. VMware Virtual Disk, virtual machine hard disk format

Does converting CAB to VMDK lose quality?

No, converting CAB to VMDK does not cause additional quality loss â€” VMDK uses lossless compression. However, any artifacts already present in the original CAB file will persist in the VMDK output.

What file size should I expect after converting CAB to VMDK?

VMDK files are typically 2-5x larger than equivalent CAB files because VMDK preserves all pixel data. This is expected and necessary for lossless quality.

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