EX900 Plus NVMe SSD

[evandwong]

I use an EX900 Plus 2TB as a secondary storage drive D : in my desktop PC.  The drive is about one year old, purchased March 2023.  While trying to copy files to another drive this week, I observed very slow transfer speeds, and I believe this SSD is failing.

- While copying files off my D : drive Windows Task Manager and Resource Monitor report that is has 100% utilization but only about 3-5MB/s Read speed.

- I've confirmed this occurs even for large files (e.g. .mp4 video) which should transfer much more quickly.

- I've confirmed that transferring between other disk drives on my computer occurs at normal speed, only D : drive is subject to this low speed.

- I've reseated the SSD in the M.2 slot, and also switched the M.2 slot in which the SSD is installed, but observed no improvement in speeds.

- I've confirmed that if I write *new* files to the SSD and then attempt to copy them, the transfer occurs at expected speeds.

User discussion in various forums online suggest that the problem of slow read speeds for older files is a common failure condition for certain SSDs, and I suspect this is what is occurring in my case.  Here is one example:
https://www.reddit.com/r/unRAID/comments/10bi4sc/ssds_that_dont_slow_down_reading_old_files/

Please confirm whether the EX900 firmware periodically "refreshes" files saved to the drive in order to mitigate the described issue.  If it does not out of the box, is there a firmware update I could install to add that functionality?

If such functionality isn't available, please advise other steps I may take or how I may begin an RMA process.

Thanks,

Evan