Restarting One Cluster Node; Shutting Down One Cluster Node; Powering Down The Cluster - HP ProLiant 300 Series Administration Manual

Restarting one cluster node

CAUTION:
Restarting a cluster node should be done only after confirming that the other node(s) in the cluster
are functioning normally. Adequate warning should be given to users connected to resources of the
node being restarted. Attached connections can be viewed through the Management Console on the
storage server Desktop using Terminal Services. From the Management Console, select File Sharing >
Shared Folders > Sessions.
The physical process of restarting one of the nodes of a cluster is the same as restarting a storage server
in single node environment. However, additional caution is needed.
Restarting a cluster node causes all file shares served by that node to fail over to the another node(s)
in the cluster based on the failover policy in place. Until the failover process completes, any currently
executing read and write operations will fail. Other node(s) in the cluster will be placed under a heavier
load by the extra work until the restarted node comes up and the resources are moved back.

Shutting down one cluster node

CAUTION:
Shutting down a cluster node must be done only after confirming that the other node(s) in the cluster
are functioning normally. Adequate warning should be given to users connected to resources of the
node being shutdown.
Shutting down a cluster node causes file shares served by that node to fail over to the other node(s). This
causes any currently executing client read and write operations to fail until the cluster failover process
completes. The other node(s) are placed under a heavier load by the extra work until the second node
is powered up and rejoins the cluster.

Powering down the cluster

The power down process for the storage server cluster is similar to the process for a single node, but with
the cluster, extra care must be taken with the storage subsystem and the sequence of the shutdown.
The power down process is divided into two main steps:
1. Shutting down the cluster nodes
2. Removing power from the cluster nodes
The sequence of these steps is critical. The devices must be shut down before the storage subsystem.
Improperly shutting down the nodes and the storage subsystem causes corruption and loss of data.
CAUTION:
Before powering down the cluster nodes, follow the proper shutdown procedure as previously illustrated.
See "Shutting down one cluster node." Only one cluster node should be shut down at a time.
HP ProLiant Storage Server administration guide
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