Compaq ProLiant 8500 Compaq Parallel Database Cluster Model PDC/O1000 for Orac - Page 26
HighAvailability Features of ProLiant Servers, Shared Storage Components
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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/O1000 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 Digital Linear Tape (DLT) Array (optional) Uninterruptible power supplies (optional) ECC memory Offline backup processor Redundant power supplies ECC-protected processor-memory bus Redundant processor power modules PCI Hot Plug slots (in some servers) Redundant cooling fans Shared Storage Components The PDC/O1000 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/O1000, the shared storage includes these hardware components: I RA4000 Arrays or RA4100 Arrays I One RA4000 Array Controller in each RA4000 Array or RA4100 Array I One Fibre Channel SAN Switch for each non-redundant Fibre Channel Fabric I One Storage Hub or FC-AL Switch for each non-redundant Fibre Channel Arbitrated Loop I Fibre Host Adapters I GBIC-SW modules I Fibre Channel cables