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The discrepancy between the reported used space on the Snowball Edge device and the size of the data synced from S3 could be due to several factors:
- Metadata Overhead: The Snowball Edge device might allocate additional space for metadata, filesystem overhead, and other system-related files, which might not be included in the reported used space.
- Data Compression: If your data is compressed before syncing to the Snowball Edge device, the actual size of the data on th device might be smaller than the original size.
- Deduplication: If there are duplicate files or data blocks in your S3 bucket, they might only be stored once on the Snowball Edge device, leading to a smaller actual used space compared to the size of the data synced.
- File System Block Size: The file system block size on the Snowball Edge device might result in some unused space due to partial block allocations.
- Temporary Files: During the syncing process, temporary files or metadata might be temporarily stored on the Snowball Edge device, consuming additional space.
To further investigate and reconcile the discrepancy, you can:
- Check the Snowball Edge documentation or contact AWS Support for information on the expected overhead and allocation of space on the device.
- Review the sync process and any compression or deduplication mechanisms applied to the data.
- Monitor the Snowball Edge device's storage usage during the sync process to identify any temporary or intermediate files that might contribute to the discrepancy.
- Consider using tools such as du or df on the Snowball Edge device to get a more detailed breakdown of the used space.
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