I am trying to update the firmware storage and when I do the prechecks I find this error. "volume not on preferred path" what does it mean? What do i have to do to solve this problem?
Volume(s) not on preferred path: Details
Preferred owner: Controller in slot B
Current owner: Controller in slot A
Affected volume gruou: volume
Volume(s): vol1, vol2, vol3 ...
I can give you more data, the storage has 2 controllers and distributes the volumes by ISCSI, currently it has a single cable connected from controller A, which has an associated IP, and controller B has nothing connected, no cable or anything configured , Is this the problem?
I do not manage this storage, I have had to review it from now on and I do not understand this behavior ...
I have seen a kb of netapp that does not recommend updating without solving this problem, I am aware that if I update I will lose production during this process, but I am afraid that I will not solve this problem and that later after updating some added problem will arise.
If Controller B has no connections to the hosts, then the volumes that belong to Controller B will fail over to Controller A. This will cause the "Volume(s) not on preferred path".
During the upgrade, each controller reboots one at a time so your hosts will lose access to all volumes if you are only using a connection to Controller A.
I recommend connecting Controller B to your hosts so that you have redundant paths.
See this guide (Page 6) for instructions on the physical cabling. You can refer to the Documentation Center for host-specific configuration changes that might be needed after connecting the extra path.
in my case, if I want to add another iscsi initiator of controller B that currently has no other path, is there a manual on how to connect another initiator to a Windows server?
That is, if I connect another initiator to have redundancy, in the windows server I will see the duplicate disk, I will need to install the mpio (multipath), but now that I have installed it, when executing it it asks me for a hardware id to recognize the storage , I don't know what to put there .. I can't find that hardware id anywhere, and I don't know how I should configure the iscsi initiator to see the disk without being duplicated, is there a manual?
Here is the link to the E2700 documentation, Introduction to NetApp E-Series E2700 with SANtricity 11.25. Note that you do not need the management port connected on the second controller, but you must have a connection from the B-controller host ports to the host HBA for a volume to be seen by the B-controller. If there are no cables from the B-controller at all, then it is not being used and that is your problem.