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this post was submitted on 14 Dec 2023
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I had WD Greens in my first NAS (they were HDDs, though). This was ill-advised. Definitely better for power consumption, but they took forever to spin up for access to the point where it seemed like the NAS was always on the fritz.
Now I swear by WD Red. Much, much better (in my use case).
(I'm not sure how things pan out in SSD land though. Right now it's just too pricey for me to consider.)
I was using HDDs, and I believe it may have been a little less of an issue bc I had Unraid configured to keep the drives spun up (I’ve read the spin up is hard on the drive, not so much the time being spun up)
But I did occasionally have some IOWait issues. Reds plus a NVME cache has resolved all those issues.
My concern (back then) with keeping the greens spun up would be that I'd lose the energy savings potential of them without the benefits of a purpose built NAS drive.
In my current NAS, I just have a pair of WD Red+. I don't have a NVME cache or anything but it's never been an issue given my limited needs.
I am starting to plan out my next NAS though, as the current on (Synology DS716+) has been running for a long time. I figure I can get a couple more years out of it, but I want to have something in the wings planned just in case. (seriously looking at a switch to TrueNas but grappling with price for HW vs appliance...). My hope is that SSDs drop on price enough to make the leap when the time comes.