Compaq Parallel Database Cluster Model PDC/O2000 for Oracle8i and Windows 2000 Administrator Guide

Cluster Architecture 2-3
High-Availability Features of ProLiant Servers
In addition to the increased application and data availability enabled by
clustering, ProLiant servers include many reliability features that provide a
solid foundation for effective clustered server solutions. The PDC/O2000 is
based on ProLiant servers, most of which offer excellent reliability through
redundant power supplies, redundant cooling fans, and Error Checking and
Correcting (ECC) memory. The high-availability features of ProLiant servers
are a critical foundation of Compaq clustering products. Table 2-1 lists the
high-availability features found in many ProLiant servers.
Table 2-1
High-Availability Components of ProLiant Servers
Hot-pluggable hard drives Redundant power supplies
Digital Linear Tape (DLT) Array (optional) ECC-protected processor-memory bus
Uninterruptible power supplies (optional) Redundant processor power modules
ECC memory PCI Hot Plug slots (in some servers)
Offline backup processor Redundant cooling fans
Shared Storage Components
The PDC/O2000 is based on a cluster architecture known as “shared storage
clustering,” in which clustered nodes share access to a common set of shared
disk drives. For the PDC/O2000, the shared storage includes these hardware
components:
■ RA4000 Arrays or RA4100 Arrays
■ RA4000 Array Controllers
■ Fibre Channel SAN Switches for each redundant Fibre Channel Fabric