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SnapScale/RAINcloudOS 4.1 Administrator’s Guide
5 – Storage Options
Nodes
Use the
Nodes
page to manage the nodes that make up the cluster.
From this page, you can:
•
Add a new node.
•
Access the
Node Properties
page to edit or remove a node from the cluster.
•
Identify physical nodes via flashing LEDs.
Some important points about SnapScale nodes:
•
Users can access the cluster storage over any of the configured network protocols by
connecting to any of the nodes.
•
Because the storage space is unified across the cluster, connecting to any of the nodes
provides access to the same data as any other cluster node.
•
To balance network client access to the nodes, enter an
A
record to the DNS pointing to
the cluster name for each IP address in the node IP address range. The DNS then uses
round-robin name resolution requests for the cluster name among the node IP
addresses. Alternatively, manually distribute clients accessing the cluster to different IP
addresses in the node IP address range.
•
When a node fails, the IP address it uses is automatically reassigned to another node.
Clients connected to that IP address are forwarded to the new node, though this may
cause a momentary interruption to storage access.
•
Files opened by clients connected to any node are recognized by all nodes, and file locks
are respected by all nodes.
