Compaq ProLiant 6500 Compaq Parallel Database Cluster Model PDC/O1000 for Orac - Page 119

Server Power Distribution, RA4000/RA4100 Array Power Distribution

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5-40 Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i and Windows 2000 Administrator Guide Server Power Distribution Figure 5-7 shows an example of server power distribution for a three-node PDC/O1000 cluster. Power supply #1 of each server is connected to PDU #1. Power supply #2 of each server is connected to PDU #2. PDU #1 is connected to UPS #1, and PDU #2 is connected to UPS #2. Each UPS is connected to building power. Proliant Servers Power Supply #1 Power Supply #2 PDU #1 UPS #1 Building Power PDU #2 UPS #2 Figure 5-7. Server power distribution in a three-node cluster Having two PDUs and UPSs in the cluster provides two paths from the servers to building power and means that the cluster stays up and running if a PDU or UPS fails in one of the paths. RA4000/RA4100 Array Power Distribution An RA4000/RA4100 Array can have one or two power supplies. If each RA4000/RA4100 Array in the cluster has two power supplies, the power distribution (with respect to connecting them to PDUs and UPSs) can be configured similarly to the example shown for server power distribution. By substituting RA4000/RA4100 Arrays for ProLiant servers in Figure 5-7, you can provide two redundant paths from the RA4000/RA4100 Arrays to building power. If each RA4000/RA4100 Array has one power supply, connect the RA4000/RA4100 Array to a PDU, connect the PDU to a UPS, and then connect the UPS to building power. If there is no UPS, connect the PDU directly to building power.

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5-40
Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i and Windows 2000 Administrator Guide
Server Power Distribution
Figure 5-7 shows an example of server power distribution for a three-node
PDC/O1000 cluster. Power supply #1 of each server is connected to PDU #1.
Power supply #2 of each server is connected to PDU #2.
PDU #1 is connected to UPS #1, and PDU #2 is connected to UPS #2. Each
UPS is connected to building power.
Building
Power
UPS #1
PDU #1
Proliant Servers
Power
Supply #1
Power
Supply #2
PDU #2
UPS #2
Figure 5-7.
Server power distribution in a three-node cluster
Having two PDUs and UPSs in the cluster provides two paths from the servers
to building power and means that the cluster stays up and running if a PDU or
UPS fails in one of the paths.
RA4000/RA4100 Array Power Distribution
An RA4000/RA4100 Array can have one or two power supplies. If each
RA4000/RA4100 Array in the cluster has two power supplies, the power
distribution (with respect to connecting them to PDUs and UPSs) can be
configured similarly to the example shown for server power distribution. By
substituting RA4000/RA4100 Arrays for ProLiant servers in Figure 5-7, you
can provide two redundant paths from the RA4000/RA4100 Arrays to building
power.
If each RA4000/RA4100 Array has one power supply, connect the
RA4000/RA4100 Array to a PDU, connect the PDU to a UPS, and then
connect the UPS to building power. If there is no UPS, connect the PDU
directly to building power.