16 Storage ArrayNOTICE: Removing or manipulating an access virtual disk can cause a loss ofmanagement access. If you remove an access virtual disk mapping from anin-band-managed storage array, MD Storage Manager can no longer access thestorage array. Do not modify the access virtual disk either in the operating system orwith MD Storage Manager.Out-of-Band and In-Band ManagementYou can manage a storage array in two ways:• Out-of-band management• In-band managementFor out-of-band management, data is separate from commands and events.Data travels through the host-to-controller interface, while commands andevents travel through the management port Ethernet cables.When you use out-of-band management, you must set the networkconfiguration for each RAID controller module’s management Ethernet port,including its Internet Protocol (IP) address, subnetwork mask (subnet mask),and gateway. If you are using a Dynamic Host Configuration Protocol(DHCP) server, you can enable automatic network configuration, but if youare not using a DHCP server, you must enter the network configurationmanually.NOTE: RAID controller module network configurations can be assigned using aDHCP server (the default setting). However, if a DHCP server is not available and the10-second selection period times out, the RAID controller modules use the192.168.128.101 static IP address for controller 0. For controller 1, the RAIDcontroller modules use the 192.168.128.102 static IP address.For in-band management, commands, events, and data travel through thehost-to-controller interface. Unlike out-of-band management, commands andevents are mixed with data.For detailed information on setting up in-band and out-of-band managementsee the Installation Guide.NOTE: In-band management is not supported on systems running the Red Hat®Enterprise Linux® 3 operating system.
