How do I collect host logs related to EMC storage or EMC Grab?

Solution:

Many of the problems encountered by users using EMC storage are host-related, such as the inability of the host to access back-end disks, a large number of LUN transitions (lun trespass), sudden slow performance of access storage, and so on. By running a software tool on the host, EMC report or EMC grab generates a file at the end of Tar that collects information about the host's storage configuration, HBA cards, PowerPath, and so on, this host log, storage log (spcollects) and switch logs will effectively help EMC's technical support positioning issues, thereby increasing the efficiency of problem solving.