Recommended best M.2 NVMe SSD for cache on Synology DS920+

[Enquiries]

Hi, I have just purchased the Synology DS920+ NAS and have populated it with 4 x Seagate Ironwolf 14TB drives. I wish to add two M.2 NVMe SSD drives for read/write cache. Can you please recommend the best value SSD drives for this purpose. My budget for this purchase is around £300. My 4 x Seagate 14TB drives are set up with SHR configuration with the one drive redundancy. Thanks for your help in this matter. I would also like to mention that I love your YouTube videos (very helpful and informative).
Best Regards.

Geoff Woodham.

[ed]

When choosing NVMe for caching you need to look at reliability ratings such as DWPD/MTBF. Here are a few on the list
https://nascompares.com/answer/nvme-m-2-...dwpd-mtbf/
Caching means a lot of read and write operations, unlike regular storage situation.
You would need to look at models with 0.5DWPD and above

970 pro – 0.66DWPD

Synology SNV3400 – 0.68DWPD

Seagate FireCuda 510 – 0.7 DWPD
Seagate IronWolf 525 – 0.7 DWPD
Seagate Firecuda 530 – 0.7 DWPD
Seagate PS5 Game drive – 0.7 DWPD

Seagate FireCuda 520 -0.9 DWPD
WD Red SN700 – 1.0DWPD

I hope this helps.