I have bought two identical SSD drives and planed to deploy them in UNRAID Cache, to complement my former purchased drive. 
I have verified that the newly bought drives are functioning well in the Windows system, simultaneously. 
However, when these two were added into the UNRAID, only one of them could be recognized by the system. The following is the information displayed in the UNRAID system:

Lexar_1TB_SSD_（orginal drive: Shenzhen Longsys Electronics Co., Ltd. Lexar NM800 PRO NVME SSD [1d97:5236] (rev 01), existing all the time）
Lexar_1TB_SSD_（newly-bought drive 1：INNOGRIT Corporation NVMe SSD Controller IG5236 [1dbe:5236] (rev 01)，recognizable）
Lexar_1TB_SSD_    （newly-bought drive 2：INNOGRIT Corporation NVMe SSD Controller IG5236 [1dbe:5236] (rev 01)，unrecognizable）

10000:e1:00.0 Non-Volatile memory controller [0108]: Shenzhen Longsys Electronics Co., Ltd. Lexar NM800 PRO NVME SSD [1d97:5236] (rev 01)
    Subsystem: Shenzhen Longsys Electronics Co., Ltd. Lexar NM800 PRO NVME SSD [1d97:5236]
    Kernel driver in use: nvme
    Kernel modules: nvme
10000:e2:00.0 Non-Volatile memory controller [0108]: INNOGRIT Corporation NVMe SSD Controller IG5236 [1dbe:5236] (rev 01)
    Subsystem: INNOGRIT Corporation NVMe SSD Controller IG5236 [1dbe:5236]
    Kernel driver in use: nvme
    Kernel modules: nvme
10000:e3:00.0 Non-Volatile memory controller [0108]: INNOGRIT Corporation NVMe SSD Controller IG5236 [1dbe:5236] (rev 01)
    Subsystem: INNOGRIT Corporation NVMe SSD Controller IG5236 [1dbe:5236]
    Kernel modules: nvme

When further searching this problem, I found that it might be related to the kernel version of Linux. Here's the link to the similar issue (

Yet, I am not sure what the next step is. Please help me add my newly bought drives and make them recognizable simultaneously. 

Thanks!
 

 

Edited December 6, 20232 yr by CatLeLe

The device doesn't confirm to the SCSI standard, adding a quirk to the kernel may help, I've already asked LT if one can be added for the next release.

On 11/18/2023 at 12:38 AM, JorgeB said:

The device doesn't confirm to the SCSI standard, adding a quirk to the kernel may help, I've already asked LT if one can be added for the next release.

thanks for the reply, i hope the next replease can solve the problem of the quirk. before next release, is there anything i can do to add the quirk.

thanks again.

3 hours ago, CatLeLe said:

before next release, is there anything i can do to add the quirk.

Nope, other than using different NVMe devices that conform to the standard, most known brands do.

@CatLeLe this release should detected your devices:

 

 

On 11/22/2023 at 1:23 AM, JorgeB said:

@CatLeLe this release should detected your devices:

Many thanks. i will try to detect it later.

 

 

@JorgeB It works. Thanks again~