Hi
@Nicolai
Saw your thread over at the Unraid forums. Based on your use case above and the info you got in that thread (thanks for asking the question over there), I really think the WD SSDs ought to work fine for you. Some notes that may help:
-- No matter what happens with TRIM the availability of TRIM support, now or in the future, these SSDs will be MUCH faster than the spinning HDD you were also considering. No question there.
-- Over on the Unraid forum I know some people talked about SSD slowdown with out TRIM. There will be some compared to if TRIM were supported, but they will still be faster than your system can push the data over the network, so you probably won't even notice the difference if you aren't obsessively benchmarking.
-- No moving parts is a plus in terms of wear and tear over a mechanical HDD, as other folks stated. This is the main plus in my mind for my particular use case.
-- With no TRIM support, the primary issue is that writes to the array disks will increase in normal use. Specifically, when dealing with deleted files. With TRIM when you delete. the SSD only deletes the selected files. Without TRIM, the deletion process actually includes a relocation of the impacted blocks in their entriety and a rewrite of the block where it was originally, but without the deleted file(s). This two step write process is where the "slowdown" people mention comes. But again, still faster than a HDD and a 1GB network connection.
-- But, the extra writes will also have an obvious adverse impact on the lifespan (endurance) of your SSD. That's why you see folks recommending an "Enterprise" drive, with more Endurance (usually via more Overprovisioning) when you can't enable TRIM. The WD RED SSDs you are considering have a 600TB endurance for the 1TB model. This is 50% more endurance than the WD Blue 1TB SSDs. So, definitely more lifespan in the RED! There's some drives out there with much greater endurance, but they also cost a lot more. And honestly, it will probably take a long time to amass 600TB of writes in your sole proprietor business situation where the server is just for you.
I'd be interested to know how it turns out. I'm usually the only user of my own Unraid system, so I'd probably be OK with an SSD array too I guess, but I tend to be a lot more timid