Using CX-500 with MPXIO

Question

We normally use PowerPath, but I'm trying to see if we can just use mpxio and be done. However, the issue I'm running into is the following.
1. I dont have any way of determining which LUN is what -- in the CX500--I use the LUN Name to determine what the disk needs to be assigned to. I see only the WWN. With Oracle RAC, it's extremely important to make sure the disks are correct to each node.
2. When adding new disks to the host, the new LUN does not appear on the host even after luxadm probe, and repeated devfsadm. Am I missing anything else? Any help would be appreciated.

Answer 1

nvmk wrote:
We normally use PowerPath, but I'm trying to see if we can just use mpxio and be done. However, the issue I'm running into is the following.
1. I dont have any way of determining which LUN is what -- in the CX500--I use the LUN Name to determine what the disk needs to be assigned to. I see only the WWN. With Oracle RAC, it's extremely important to make sure the disks are correct to each node.
2. When adding new disks to the host, the new LUN does not appear on the host even after luxadm probe, and repeated devfsadm. Am I missing anything else? Any help would be appreciated.You posted your question to the Servers General Discussion forum.
I see no mention of any specific Sun/Oracle server model for your "host".
CX-500? Powerpath?
Is THIS what you are referring to? ( a link to an EMC data sheet in PDF format )
If so, that's a storage peripheral from some other company.
Perhaps you should ask EMC for guidance, because they will likely know the optimum method to use it.
Storage configuration questions should go to a forum hosted by the manufacturer of the device.