Lexar NM790 Recognized as /dev/sdza Instead of NVMe on F4-424 Pro

[johnny]

I recently installed a Lexar NM790 4TB SSD in my Terramaster F4-424 Pro NAS. I had this SSD available, I didn't buy it for the NAS. This SSD does not appear on the compatibility list, but it seems to work correctly. However, it is not recognized as an NVMe device, instead, the system identifies it as /dev/sdza.
>lsblk -d -o NAME,MODEL,SIZE,TYPE
NAME MODEL SIZE TYPE
sdza Lexar SSD NM790 4TB 3.7T disk"

>dmesg | grep -i nvme
[0.346368] nvme 0000:04:00.0: platform quirk: setting simple suspend
[0.346405] nvme nvme0: pci function 0000:04:00.0
[0.351188] nvme nvme0: bad crto:0 cap:8202020ff0103ff
[0.357393] nvme nvme0: allocated 40 MiB host memory buffer.
[0.366719] nvme nvme0: 8/0/0 default/read/poll queues

"bad crto:0 cap:8202020ff0103ff" <- This may indicate that something went wrong...

Is this something normal that I can ignore, or does it indicate some kind of incompatibility with this SSD?

[TMroy]

这款SSD 我们没有测试验证过，请更换一个其他SSD 以排除是否是SSD 故障或者是兼容性问题。

[johnny]

I opened this thread precisely to find out without having to buy another SSD. The only compatible SSD I could buy is the Samsung 990 PRO 4TB, but at the moment the price is a bit inflated to purchase it now.
I also tested with a Kingston KC3000 1TB and got the same result.

However, the transfer rates seem close to the theoretical maximum. I executed the following command:

代码： 全选

fio --name=seq_read_write --rw=readwrite --bs=1M --size=10G --numjobs=4 --iodepth=8 --runtime=0 --time_based=0 --group_reporting

And obtained the following results:

• M.2 KC3000 1TB: read: 931 MB/s, write: 950 MB/s

• M.2 NM790 4TB: read: 896 MB/s, write: 914 MB/s

• SATA 840 EVO: read: 474 MB/s, write: 479 MB/s

Based on these results, I believe there should be no limitation in using these M.2 SSDs. If I’m wrong, please correct me.