Compaq ProLiant 6500 Compaq Parallel Database Cluster Model PDC/O1000 for Orac - Page 120
Power Sequencing, Storage Hubs, FC-AL Switches, or Fibre Channel SAN Switches
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Installation and Configuration 5-41 Power Sequencing Be sure to power up the cluster components in the following order: 1. RA4000/RA4100 Arrays 2. Storage Hubs, FC-AL Switches, or Fibre Channel SAN Switches (Power is applied to a Storage Hub when the AC power cord is plugged in.) 3. Ethernet hubs or switches 4. ProLiant servers Be sure to power down the cluster components in the following order: 1. ProLiant servers 2. Ethernet hubs or switches 3. Storage Hubs, FC-AL Switches, or Fibre Channel SAN Switches (Power is applied to a Storage Hub when the AC power cord is plugged in.) 4. RA4000/RA4100 Arrays Shutting down and powering off the servers first allows them to perform tasks such as flushing queued database write transactions to disk and properly terminating running processes.