Manual

Hardware Considerations 109

MD3000 Cluster Configuration Guidelines for

Standalone Host Servers

If one of the standalone host servers you are planning to configure into a

cluster environment is running MD Storage Manager and has a virtual disk

mapped to the array, use that host to create the Host Group and quorum

virtual disk mapping.

NOTE: Failure to follow this mapping protocol can cause the host server to lose

communication with the array if the server is using only in-band management and

only one of the servers has a virtual disk mapped to the array. If communication is

lost, restore in-band management to the other host server and complete the cluster

setup using the following procedure.

Using MD Storage Manager from either the host server with restored in-

band management or from a management station, select

Configure

→

Create Host-to-Virtual Disk Mappings

Select the host server name that does not have a virtual disk mapped.

Click

Access

to access the virtual disk.

Assign a logical unit number (LUN) of 31.

Click

Finish