In addition, a cluster uses at least two network connections on each node:
•
The cluster interconnect or “heartbeat” crossover cable connects to the
fi
rst network port on
each cluster node. In more than two node deployments, a private VLAN on a switch or hub is
required for the cluster interconnect.
•
The client network subnet connects to a second network port on each cluster node. The cluster
node names and virtual server names have IP addresses residing on these subnets.
NOTE:
If the share is to remain available during a failover, each cluster node must be connected to the same
network subnet. It is impossible for a cluster node to serve the data to a network to which it is not
connected.
Protocol planning
The storage servers support many
fi
le sharing protocols, including sharing protocols for Windows, UNIX,
Linux, Novell, Macintosh, Web, and FTP clients. However, not all of these protocols can take advantage
of clustering. If a protocol does not support clustering, the share is not available to the clients until
the owner cluster node is brought back online.
HP recommends placing cluster aware and non cluster aware protocols on different
fi
le shares.
Use the information in
Table 16
to determine whether it is advantageous to use clustering.
Table 16 Sharing protocol cluster support
Protocol
Client Variant
Cluster Aware
(supports failover)
Supported
CIFS/SMB
Windows NT
Yes
Yes
Windows 2000
Windows 95
Windows 98
Windows ME
NFS
UNIX
Yes
Yes
Linux
HTTP
Web
No
Yes
FTP
Many
Yes
Yes
NCP
Novell
No
Yes
AppleTalk
Apple
No
No
NOTE:
AppleTalk is not supported on clustered disk resources. AppleTalk requires local memory for volume
indexing. On failover events, the memory map is lost and data corruption can occur.
Preparing for cluster installation
This section provides the steps necessary to cluster HP ProLiant storage servers.
HP ProLiant DL380 G5 Storage Server
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