I am getting a lot of messages about losing access to volumeand then restored access to volumes. and idea?
just discovered your post and seen that nobody provided feedback here. I suppose you might have discovered the root cause. For that what you shared it's difficult to really advice. Things I would look at:
And of course, if you haven't done, so - contact EMC support at http://support.emc.com
Let us know if and how you resolved the issue.
And discovered that there is a similar post some time ago, suggesting similar points as I did just with some more specifics where to look at for it https://community.emc.com/message/793297?et=watches.email.thread#793297
Care to post up any errors from that log (with customer's permission)
Try to check the fiber ports mapping on your "server's" SAN HBA, in some cases administrators forget to fix the port mapping probably and the connections might get lost if the connection fails over on a disconnected port.