Multi-node clusters on a fibre channel SAN with the SAN SSO

In this configuration, one or more clusters are attached to a fibre channel storage area
network (SAN), with cluster-aware Backup Exec and the SAN Shared Storage Option
(SAN SSO) installed on the controlling node in each cluster. Shared secondary storage
devices are attached to the fibre channel, although a single storage device can be shared
between one or more clusters. Failover occurs (in alphabetical order of the machine
name) to other designated nodes in the cluster.
Note: When using multiple clusters in a SAN SSO environment, it is strongly
recommended that the cluster nodes be connected to the storage devices using a
fibre switch. If you use a hub rather than a fibre switch, the hub will receive a reset
command during a failover event that causes all other components attached to the
hub to be disconnected.
You can designate any server on the fibre channel SAN as the Shared Storage
Option Database server.
You should create a failover device pool for the cluster. For details about creating a
failover device pool, This configuration offers increased performance since backups are performed locally
instead of over a network. Additionally, centralized media catalogs are available. Because
the SAN SSO uses a shared catalog database, a tape that has already been cataloged can
be physically moved from one device to another and not have to be recataloged.
Tip The SAN SSO option must be installed on each failover node, with the same
settings that were used on the primary node. Either all nodes should be database
servers or all nodes should be secondary member servers.
Following are examples of multi-node clusters:

Two 2-node Clusters on a Fibre Channel SAN with the SAN SSO
LAN





Four-node Cluster on Fibre Channel SAN with the SAN SSO

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