HP B6960-90078 manual Shared Devices and MC/ServiceGuard, File on donat, Configuration Basics

Configuring and Using Backup Devices

Shared Devices in the SAN Environment

Example libtab Example of the libtab file on host donat.company.com (Solaris):
file on donat	donat.company.com /dev/rsst6 SAN_LIB_1_sample
	donat.company.com /dev/rsst6 SAN_LIB_2_sample
	donat.company.com /dev/rsst6 SAN_LIB_3_sample
	donat.company.com /dev/rsst6 SAN_LIB_4_sample
NOTE	If the host is part of a cluster, <FullyQualifiedHostname> must be the
	virtual host name, and <DeviceFile SCSIPath> must refer to the
	local node.

Shared Devices and MC/ServiceGuard

If you are using Data Protector with MC/ServiceGuard for clustering, you can implement the integration in a SAN environment. Since clustering is based on sharing resources such as network names, disks, and tapes among nodes, Fibre Channel and SAN are well suited as enabling technologies for storage device sharing. ATS (Advanced Tape Services) is an integrated part of HP MC/ServiceGuard 11.05 that manages tape resources and enables the use of Data Protector in a SAN environment.

This section explains how to create the necessary device files, how to configure the virtual host, how to configure static and floating drives, and how to use the Data Protector GUI to configure the integration for use in a SAN environment.

Configuration Basics

Nodes in a cluster can share SAN-connected devices in order to perform a "LAN-free" backup of an application running in a cluster. Cluster-aware applications can, at any time, run on any node in a cluster since they run on the virtual host. In order to perform a LAN-free local backup of such an application, you need to configure the logical device with a virtual hostname instead of a real node name.

You can configure as many logical devices for a single physical device as you need, but you have to use the same Lock Name for all devices.

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