For more details, please see ourCookie Policy.

Fibre Channel (SAN)

Posts: 0

Zoning and Clusters

Normal 0 21 false false false MicrosoftInternetExplorer4 ]]><!><!> ]]>

We are using SAN architecture

since several years and a lot of clusters (Solaris, Linux, Oracle RAC, etc..)

are connected without any trouble.

We recently

met a problem with 2 Clusters under Linux RH4.

When we

reboot one node, the other loses it paths to disks. The two nodes and the

storage are in the same Zone. If i create two separated zones instead of one,

this trouble does not occur anymore.

Does anybody

have met the same problem ? and/or is able to explain this phenomena (LIP reset?)

Posts: 0

Re: Zoning and Clusters

Although I have limited understanding, since no one has replied I give it my best shot.

By zoning the servers you are preventing a LIP reset caused by server reboot to reach the other server in the cluster. As a best practice you should always have single initiator single target in one zone. Maybe the RSCN's are causing the multipathing driver to bring down a path, and when u change the zoning scheme, the RSCN's no longer affect the hosts.

RSCN = request for state change notification.

Although this shd not be the case, some multipathing software behave crazy.



Posts: 0

Re: Zoning and Clusters

Thanks for your helpful answer. We think you are right.

Join the Broadcom Support Community

Get quick and easy access to valuable resources across the Broadcom Community Network.