Comment by andy4blaze

Andy from Backblaze here: The WDC model (WUH721816ALE6L0) seems to only be available in Europe, not the US. It was 549,00 EUR last time I looked back in November. I believe the last digit is about data erasure with 0 being "Instant Secure Erase", 1 being Bulk Data Encryption (SATA), 4 being Secure Erase (overwrite only). We only have reliability data for the model listed.