TruCluster Server Handbook (HP Technologies)

1.4 What is TruCluster Server?

Now that we know what a cluster is, what is TruCluster Server? TruCluster Server is an amalgam of Tru64 UNIX software, storage devices, cluster interconnects, and two or more AlphaServer systems that operate together as a single virtual system. Each cluster member can share resources, storage, and cluster-wide file systems under a single systems management domain.

TruCluster Server versions 5.0A, 5.1, and 5.1A provide the following features:

• Cluster-wide namespace.

• Cluster-wide access to disk and tape storage.

• Cluster-wide Logical Storage Manager (LSM).

• Connection Manager^[6].

• Cluster application availability (CAA).

• Cluster alias.

• Highly available NFS server using cluster alias.

• Cluster Communications Interconnect.

• Distributed Lock Manager (DLM)^[5].

• Single-systems management.

• Single Security Domain.

• Rolling Upgrade/Patch.

• Expanded Process IDs (PIDs).

Again, with TruCluster Server, you are creating real single-systems image systems clusters from individual Tru64 UNIX servers. We will provide a more in-depth overview of Tru64 UNIX and TruCluster Server in Chapter 2.

^[6]Connection Manager is discussed in detail in Chapter 17.

^[5]Distributed Lock Manager is discussed in detail in Chapter 18.