You are looking to size a data warehouse configuration. If the I/O throughput for the CPUs is 25 GB/s, the I/O throughput for the HBA is 18 GB/s, and the I/O throughput for the disk subsystem is 6…

Question

Options

• A25 GB/s
• B18 GB/s
• C6 GB/s
• DIt depends on how many processors are in the servers.

• A
  4% (1)
• B
  4% (1)
• C
  81% (22)
• D
  11% (3)

Explanation

In this scenario the disk subsystem is the bottleneck. It determines the throughput. Note: Each of the components must provide sufficient I/O bandwidth to ensure a well- balanced The end-to-end I/O system consists of more components than just the CPUs and disks. A well-balanced I/O system must provide approximately the same bandwidth across all components in the I/O system. These components include: * Host bus adapters (HBAs), the connectors between the server and the * Switches, in between the servers and a storage area network (SAN) or network attached storage (NAS). * Ethernet adapters for network connectivity (GigE NIC or Infiniband). In an Oracle Real Application Clusters (Oracle RAC) environment, you need an additional private port for the interconnect between the nodes that you should not include when sizing the system for I/O throughput. The interconnect must be sized separately, taking into account factors such as internode parallel execution. * Wires that connect the individual components.

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