Single Point of Failure: a part which renders an entire system unusable when if fails.
Ethernet hardware address.
Serial Storage Architecture: a disk attach technology promoted by the SSA Industry Association.
Small Computer System Interface: the standard disk technology in small and midrange systems.
Enhanced Integrated Drive Electronics: the standard disk technology for the PC market.
An Entity which is critical to business success, e.g. the data processing equipment of a company. Also named "mission critical".
A host in a cluster.
A simple redundancy setup where one cluster node is idly supervising the other (active) node.
A slightly more complex redundancy setup where the standby node is doing less important work which is not taken over by any other cluster node.
A redundancy setup where both nodes do business critical work, being a standby for each other.
A redundancy setup where one node does business critical work and the other is the standby node. Both change their roles after a failure of the active node.
A redundancy setup where all nodes access the resource group including the external disks concurrently with help of a distributed lock manager.
Communication method in a loosely coupled cluster to exchange status and keepalive data.
Unbuffered I/O devices which make sure data is actually written to disk during a write operation.
Abbreviation for IP Address Takeover