Cluster Administration
204
NAS 4000s and 9000s Administration Guide
In preparing for the cluster installation:
■
All software components listed in the SAN connection tool must be installed and the fiber
cables attached to the HBA(s) before the cluster installation is started.
■
All shared disks, including the quorum disk, must be accessible from both nodes. When
testing connectivity between server and LUN, only one server should be given access to
the LUN at a time or the non-testing server should be powered off.
■
All shared disks must be configured as basic (not dynamic).
■
All partitions on the disks must be formatted as NTFS.
Network Planning
Clusters require more sophisticated networking arrangements than a stand alone NAS device.
For example, because a cluster must be deployed into a domain environment, workgroups are
not supported. A Windows NT domain or Active Directory domain must be in place to contain
the cluster names, virtual server names, and user and group information. A cluster cannot be
deployed into a non domain environment.
All cluster deployments have at least seven network addresses and network names:
■
The cluster name (Unique NETBIOS Name) and IP address
■
Node A's name and IP address
■
Node B's name and IP address
■
At least one virtual server name and IP address for Node A
■
At least one virtual server name and IP address for Node B
■
Cluster Interconnect static IP addresses for Node A and Node B
In multi node deployments additional network addresses are required. For each additional
node, three static IP addresses are required.
Virtual names and addresses are the only identification used by clients on the network.
Because the names and addresses are virtual, their ownership can transition from one node to
the other during a failover, preserving access to the shares on the virtual disks.
In addition, a cluster will use at least two network connections on each node:
■
The cluster interconnect or “heartbeat” crossover cable connects to the first 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 will 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.
Summary of Contents for NAS 4000s
Page 18: ...About this Guide 18 NAS 4000s and 9000s Administration Guide ...
Page 92: ...Disk Management 92 NAS 4000s and 9000s Administration Guide ...
Page 196: ...NetWare File System Management 196 NAS 4000s and 9000s Administration Guide ...
Page 246: ...Index 246 NAS 4000s and 9000s Administration Guide ...
