Configuring a Boot Device on an EMC Storage Array
–An alternative to masking the VCM DB is to map the Volume Logix database device so that it is the highest LUN presented to the host. Be aware that the LUN number should not be higher than 254 (FE).
Note: The
•VNX series or CLARiiON ghost LUN - If no LUN 0 exists in the storage group, a phantom device (LUNZ) will be presented by the array in its place. Additionally, a valid LUN 0 presented via an inactive path acts as a
◆When attaching the Linux host to an EMC storage array, use the adapter in the
◆The installer installs the boot block onto only the first disk it sees. This includes SCSI and IDE drives in the server. If only EMC storage array devices attached to the system, the boot BIOS should be set to the first LUN the adapter sees. If there are other local disks in the system and depending on how Linux discovers the controllers and drives, , it may be necessary to remove the local disks in order for the boot block to be properly located on the desired device.
Symmetrix-specific limitations
Consider the following
◆Prior to the installation on a Symmetrix LUN, the Linux host HBA must have successfully logged into the array. Using Solutions Enabler from another host, at least one LUN must be assigned to the host.
◆During the installation procedure, it is recommended that only one LUN be allocated to the host for ease of installation. Once the installation has completed, additional LUNs may be assigned to the host.
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EMC Host Connectivity with QLogic FC and iSCSI HBAs and FCoE CNAs for the Linux Environment
