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VCS systems 

From 1 to 32 HP systems running HP-UX 11.23 PI. 

DVD drive 

One drive in a system that can communicate to all the nodes in the cluster. 

Disks 

Typical VCS configurations require that shared disks support applications that migrate between systems in the cluster. The VCS I/O fencing feature requires that all disks used as data disks or as coordinator disks must support SCSI-3 Persistent Reservations (PR).  

The coordinator disk does not store data, so configure the disk as the smallest possible LUN on a disk array to avoid wasting space.  

See Setting up I/O fencing.  

Disk space 

To run VCS, LLT, GAB, the Web Console, and the Java Console, each VCS system requires the following file system space: 

• 620 MB in /var

  If you do not have enough free space in /var, then use the installvcs command with tmppath option. Make sure that the specified tmppath file system has the required free space.

• 350 MB in /opt
• 20 MB in /usr
• 2 MB in /

Network Interface Cards (NICs) 

In addition to the built-in public NIC, VCS requires at least one more NIC per system. Symantec recommends two additional NICs. 

Fibre Channel or SCSI host bus adapters 

Typical VCS configuration requires at least one SCSI or Fibre Channel Host Bus Adapter per system for shared data disks. 

RAM 

Each VCS system requires at least 256 megabytes. 

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