Two disks have been found on node "" that cannot be distinguished from one another

Question

Hello,

When doing the validation BEFORE configuration on the cluster I have an error: (Windows Server 2019 Standard)

When doing the Cluster validation there is an error with the disk: Two disks have been found on node SIPPSCRIBESQL1.ad that cannot be distinguished from one another. The disks involved have disk signature {1fd9ab18-6b04-4458-8056-117e7a1e379b}, SCSI page 83h VPD descriptor 600507680C8085134800000000000855, SCSI page 80h VPD Serial Number 0203202144d2XX01. Please verify the storage configuration. You must either mask (unpresent, detach) one of these LUNs at this node, or, run validation and specify a disk list that includes only one of these disks, for example by using the Test-Cluster cmdlet in Windows PowerShell.

I tried to access the View report and got an error:"2023-06-15_18-06-25 SIPPSCRIBESQL1 - View Cluster Validation Report Failed.jpg

Failover Clustering feature installed

Multipath I/O feature installed

2023-06-16_7-37-12 Failover Clustering - Multipath IO.jpg

What should I checked? As I have two nodes I did the same Cluster Validation on both sides and I got the same error....

Any log or misconfiguration?

Thanks,

Dom

Answer 1

Hey,

You should add support for iSCSI or SAS devices in MPIO, so your server can work with drives, which have multiple paths. Might help: https://petri.com/using-mpio-windows-server-iscsi-initiator/

https://www.dell.com/support/manuals/el-gr/dell-sas-hba-12gbps/dell_hba_ug_publication/dell-emc-hba-multipathing-using-windows?guid=guid-97ba6e1e-f4bc-451c-a417-f1cf6aa11ed3&lang=en-us

You will need shared storage to create Failover Cluster. It can be either a SAN or some kind of VSAN. S2D or StarWind VSAN can be considered as an options.
https://learn.microsoft.com/en-us/azure-stack/hci/concepts/storage-spaces-direct-overview

https://www.starwindsoftware.com/starwind-virtual-san

Cheers,  
Alex Bykovskyi  
StarWind Software  
Note: Posts are provided “AS IS” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.

Answer 2

Hello,

I found the issue with the MPIO not fixing the multiple paths...

2023-06-16_7-37-12 Failover Clustering - Multipath IO.jpg

So I re-run the Discovery Multi-Paths

2023-06-16_7-56-06 Discover MPIO.jpg

and now this error is gone...

Thanks,

Dom