Hi,

I have a Synology 718+ NAS with one RE4-GP (WD2000FYYZ) and one RE (WD2000FYYZ).

I am very satisfied with them, but I need more capacity and would like to replace them with two 4 TB drives. I am hesitating: if I buy two RED PRO 4TB drives (WD4005FFBX or WD4003FFBX), will the noise be noticeably louder when watching movies? My main concerns for my next hard drives are noise levels and reliability under low-stress (but on H24) use.

Thanks in advance !

Manu

These models will probably be quieter than the current ones.
When it comes to failure rates, it is a random issue and depends on many things.
Your currently installed drives often suffer severe damage from damaged heads and scratched magnetic surfaces.

The 4TB models are quieter when idle, but louder when seeking, according to the datasheets.

https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/wd/product/internal-storage/wd-re/data-sheet-wd-re.pdf (WD2000FYYZ)

https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-red-pro-hdd/product-brief-western-digital-wd-red-pro-hdd.pdf (WD4005FFBX)

https://documents.westerndigital.com/content/dam/doc-library/pl_pl/assets/public/western-digital/product/internal-drives/wd-red-pro-hdd/product-brief-western-digital-wd-red-pro-hdd.pdf (WD4003FFBX)

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