[SOLVED] Whats the differnce between HGST HUH721212ALN600 and HGST HUH721212ALN604

DcUlreich

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Jun 15, 2013
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How do you tell the difference between the mentioned HDDs? They seem identical and I can't find much information about them either
 
Both models are 4Kn drives.

The -600 supports Instant Secure Erase while the -604 supports Secure Erase but only by overwriting the data. This would imply that the -600 model supports Full Disk Encryption (FDE) while the -604 does not.

Instant Secure Erase is a cryptographic erase, ie the encrypted data are rendered unintelligible by discarding the internal encryption key.

A non-encrypted drive can only be erased by overwriting every sector. That may take several hours.

https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/data-center-drives/ultrastar-dc-hc500-series/product-manual-ultrastar-dc-hc520-sata-oem-spec.pdf

https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/data-center-drives/ultrastar-dc-hc500-series/data-sheet-part-numbers-ultrastar-dc-hc520.pdf
 
Both models are 4Kn drives.

The -600 supports Instant Secure Erase while the -604 supports Secure Erase but only by overwriting the data. This would imply that the -600 model supports Full Disk Encryption (FDE) while the -604 does not.

Instant Secure Erase is a cryptographic erase, ie the encrypted data are rendered unintelligible by discarding the internal encryption key.

A non-encrypted drive can only be erased by overwriting every sector. That may take several hours.

https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/data-center-drives/ultrastar-dc-hc500-series/product-manual-ultrastar-dc-hc520-sata-oem-spec.pdf

https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/data-center-drives/ultrastar-dc-hc500-series/data-sheet-part-numbers-ultrastar-dc-hc520.pdf
 

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