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iSCSI Storage (Disk Resource) remaining offline after iSCSI network failure

Alexandros Kanakaris 36 Reputation points
2020-08-05T06:18:19.647+00:00

Hello, I have a question about the typical behavior of a Disk Resouce in an FC.

Setup:
2-node failover cluster
1 file server resource
1 shared disk (via iSCSI initiator)

All failover/failback actions work fine, verification of cluster is also fine.
I wanted to simulate a failure of the iSCSI storage (hard disconnect of 10G networking).

Once unplugged, node-1 will retry as per policy and then failover to node-2 which will also do its retries.
Then, the Disk shows as Status = Offline.

After some time, I reconnect the 10G cabling but the Disk remains in Offline state.
If I click Bring Online within FC, it works fine.

So my question is, is this normal behavior for an FC? Shouldn't the disk come back online when network is connected again?

Thanks for any insight on this.

Alex

Windows Server Clustering
Windows Server Clustering
Windows Server: A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.Clustering: The grouping of multiple servers in a way that allows them to appear to be a single unit to client computers on a network. Clustering is a means of increasing network capacity, providing live backup in case one of the servers fails, and improving data security.
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  1. Xiaowei He 9,906 Reputation points
    2020-08-05T09:32:41.437+00:00

    Hi,

    I did a test in my lab, however, since we using VMs to create the lab, I can't simulate a network adapter disconnection, so I just disconnect the virtual disk in the ISCSI server. After disconnecting the virtual disk on the ISCSI server, the CSV offline, while when I re-enable the virtual disk, the CSVs is online automatically:

    15780-iscsi-1.png

    15831-iscsi-2.png

    For a test, please try to disable the virtual disk on the ISCSI server on your side, check if the CSV can't online automatically too? This can help to check if the cluster has some issues to bring back the CSV.

    --------------------------------------------

    If the reply could be of help, please help to accept it as an answer, thanks for your cooperation!
    Thanks for your time!
    Best Regards,
    Anne

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  2. Xiaowei He 9,906 Reputation points
    2020-08-14T03:17:22.647+00:00

    Hi,

    I would like to check if the above reply could be of help? If yes, please help accept it as an answer, so that others meet a similar issue can find useful information quickly. If you have any other concerns or questions, please feel free to feedback.

    Besides, I would like to check if you could receive the Email notification when we reply to your post? We appreciate your feedback.

    If the reply could be of help, please help to accept it as an answer, thanks for your cooperation!
    Thanks for your time!
    Best Regards,
    Anne

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