HP ProLiant Storage Server User Guide (440584-003, September 2007)

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 t
he cluster
The power down p
rocessforthestorageserverclusterissimilartotheprocessforasinglenode,butwith
the cluster, e
xtra care must be taken with the storage subsystem and the sequ ence of the shutdown.
The power down process is divided into two main steps:
1. Shut ting d own the cluster no des
2. Removing power from the cluster nodes
Thesequenceofthesestepsiscritical.Thedevicesmustbeshutdownbeforethestoragesubsystem.
Improperly shutting down the nodes and the storage subsystem causes corruption and loss of data.
CAUTION:
Before powe
ring 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.
Powering up the cluster
The power up process for the storage server cluster is more complex than it is for a single node because
extra care must be taken with the storage subsystem.
The sequence of the power up steps is critical. Improper power up procedures can cause corruption
and loss of data.
CAUTION:
Do not power up the cluster nodes without first powering up the storage subsystem, and verifying it
is operating normally.
Nodes shou
ld be powered up separately allowing one node to form the cluster prior to p owering up the
additional node(s). To power up the cluster nodes:
1. After the storage subsystem is confirmed to be operating normally, power up a single node. Wait for
the node to come c ompletely up before powering up the subsequent node(s).
If more than one n ode is powered up at the same time, the first node that completes the sequence
gains ow
nership of the cluster quorum and controls the cluster database. Designate a particular
node as t
he usual cluster quorum owner by always powering up that node first and letting it
complet
ely restart before powering up additional cluster node(s).
2. Power u
p the additional cluster node(s). Each node should be allowed to star t fully, prior to star ting
asubsequentnode.
Additional information and references for cluster ser vices
The following web sites provide detailed information for clustered environments for Windows Server
2003, which also applies to Windows Storager Server 2003 :
• Cluster services
h
ttp://www.microsoft.com/windowsserver2003/technologies/clustering/default.mspx
• Howto: Setupaclusteredprintserver
h
ttp://support.microsoft.com/d efault.aspx?scid=kb;en-us;278455
• How to: Set up a print spooler on Microsoft Cluster Server
h
ttp://support.microsoft.com/kb/197046/
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