1 Introduction to Exalogic Machine

This chapter describes the features and hardware components of an Exalogic machine. It also includes usage information related to the Exalogic machine.

This chapter contains these topics:

1.1 About Oracle Exalogic

Oracle Exalogic is an integrated hardware and software system designed to provide a complete platform for a wide range of application types and widely varied workloads. Exalogic is intended for large-scale, performance-sensitive, mission-critical application deployments. It combines Oracle Fusion Middleware software and industry-standard Sun hardware to enable a high degree of isolation between concurrently deployed applications, which have varied security, reliability, and performance requirements. Exalogic enables customers to develop a single environment that can support end-to-end consolidation of their entire applications portfolio.

Exalogic is designed to fully leverage an internal InfiniBand fabric that connects all of the processing, storage, memory and external network interfaces within an Exalogic machine to form a single, large computing device. Each Exalogic machine is connected to the customer's data center networks via 10 GbE (traffic) and GbE (management) interfaces.

Customers can integrate Exalogic machines with an Exadata machine or additional Exalogic machines by u sing the available InfiniBand expansion ports and optional data center switches. The InfiniBand technology used by Exalogic offers significantly high bandwidth, low latency, hardware-level reliability, and security. If you are using applications that follow Oracle's best practices for highly scalable, fault-tolerant systems, you do not need to make any application architecture or design changes to benefit from Exalogic. You can connect many Exalogic machines or a combination of Exalogic machines and Oracle Exadata Database Machines to develop a single, large-scale environment.

1.2 Exalogic Hardware Configurations

The following hardware configurations of Exalogic are available:

  • Exalogic machine full rack

  • Exalogic machine half rack

  • Exalogic machine quarter rack

  • Exalogic machine eighth rack

Note:

In addition to purchasing one or more Exalogic racks, you can purchase an appropriate number of licenses for a software pack that contains new features in Oracle WebLogic Server depending on the number of compute nodes to be used. This software pack includes a number of Exalogic-specific enhancements and features. The additional software licenses are a prerequisite for using the software pack.

Software licenses are optional. You only need to purchase licenses for those CPUs on which the licensed software will be used.

1.3 Features of Exalogic

Exalogic includes the following features:

  • Complete, pre-assembled, and certified system for maximum performance

  • Best platform for end-to-end consolidation of large-scale application deployments

  • Ready to deploy

  • Linearly scalable

  • Enterprise-ready

  • Enterprise-level software and hardware support

1.4 Hardware Components of Exalogic

Exalogic machines consist of compute nodes, a storage appliance as well as required InfiniBand and Ethernet networking components. The number of these components in each machine varies based on the hardware configuration.

Note:

The hardware components listed in this chapter are for Exalogic machines shipped from the factory.

Table 1-1 Hardware Components of Exalogic

Component Full Rack Half Rack Quarter Rack Eighth Rack

Sun Rack II 1242

1

1

1

1

Compute nodes:

  • X2-2: Sun Fire X4170 M2

  • X3-2: Sun Server X3-2

  • X4-2: Sun Server X4-2

30

16

8

4

Storage Appliance:

  • X2-2 and X3-2: Dual controller Sun ZFS Storage 7320 appliance (60 TB)

  • X4-2: Oracle ZS3-ES storage appliance

1

1

1

1

Sun Network QDR InfiniBand Gateway Switches (NM2-GW)

4

2

2

2

Sun Datacenter InfiniBand Switch 36 (NM2-36P)

1

1

0

0

Cisco Ethernet management switch

  • X2-2: 48-port Cisco Catalyst 4948 switch (part number: 371-4784-N)

  • X3-2 and X4-2: 48-port Cisco Catalyst 4948E-F-S switch (part number: 7023685)

1

1

1

1

Redundant power distribution units (for the available PDU options, see PDUs in Exalogic)

2

2

2

2


You can connect up to eight Exalogic machines, or a combination of Exalogic and Exadata on the same InfiniBand fabric, without the need for any external switches.

Note:

If more than eight racks of Exalogic or Exadata are required to be connected on the same InfiniBand fabric, Oracle offers a choice of several high-capacity datacenter switches, which allow the creation of Exalogic clouds consisting of hundreds of racks and tens of thousands of processors.

PDUs in Exalogic

Each Exalogic rack contains two redundant PDUs that are available in both high and low voltage options. The available PDU options can be found in the data sheets available at the following location:

http://www.oracle.com/technetwork/server-storage/engineered-systems/exalogic/index.html

Note:

When you upgrade from an Exalogic eighth-, quarter-, or half-rack to a full rack, if the original rack was ordered with 15 kVA PDU, you must upgrade to a 24 kVA PDU.

Spares Kit for Exalogic

The Exalogic machine is accompanied by a spares kit containing additional parts and accessories (cables, for example) that Oracle Services personnel will use to replace non-working and broken parts quickly. When Oracle Services personnel visit your site for repairing and replacing hardware, you should make the spares kit available to them. Note that any parts used by Oracle Service personnel from the spares kit will be replenished by Oracle.

Pre-cabling for Exalogic X4-2 Machines

The eighth-, quarter-, and half-rack X4-2 machines are pre-cabled with a complete set (equivalent in number to a full rack) of InfiniBand (92), Ethernet (42), and power cables. All the cables are connected to the appropriate switches and routed to the correct rack-unit location. The unconnected ends of the cables are tied off to lacer bars. At a later time, if the machine is upgraded to a larger rack, the filler panels and lacer bars are removed, the X4-2 servers are installed with rack rails and cable-management arms, and the cables (power, InfiniBand, and Ethernet) are connected to the newly installed compute nodes.

1.5 Exalogic Machine Rack Layout

This section contains the following topics:

Note:

Do not alter the rack layout. Do not use the free space in the rack for anything other than a rack upgrade kit.

1.5.1 Exalogic Machine Full Rack Layout

Figure 1-1 shows the layout of an Exalogic machine full rack (front view and rear view).

Figure 1-1 Exalogic Machine Full Rack Layout

Description of Figure 1-1 follows
Description of "Figure 1-1 Exalogic Machine Full Rack Layout"

1.5.2 Exalogic Machine Half Rack Layout

Figure 1-2 shows the layout of an Exalogic machine half rack (front view and rear view).

Note:

Do not alter the rack layout. Do not use the free space in the rack for anything other than a rack upgrade kit.

Figure 1-2 Exalogic Machine Half Rack Layout

Description of Figure 1-2 follows
Description of "Figure 1-2 Exalogic Machine Half Rack Layout"

1.5.3 Exalogic Machine Quarter Rack Layout

Figure 1-3 shows the layout of an Exalogic machine quarter rack (front view and rear view).

Note:

Do not alter the rack layout. Do not use the free space in the rack for anything other than a rack upgrade kit.

Figure 1-3 Exalogic Machine Quarter Rack Layout

Description of Figure 1-3 follows
Description of "Figure 1-3 Exalogic Machine Quarter Rack Layout"

1.5.4 Exalogic Machine Eighth Rack Layout

Figure 1-4 shows the layout of an Exalogic machine eighth rack (front view and rear view).

Note:

Do not alter the rack layout. Do not use the free space in the rack for anything other than a rack upgrade kit.

Figure 1-4 Exalogic Machine Eighth Rack Layout

Description of Figure 1-4 follows
Description of "Figure 1-4 Exalogic Machine Eighth Rack Layout"

1.6 Operational Procedures for Exalogic Machine

This section includes the following topics:

1.6.1 Non-emergency Power Procedure

Compute nodes and controllers in the storage device are powered on by either pressing the power button on the front of the machine, or by logging in to the ILOM interface and applying power to the system.

Compute nodes and controllers can also be powered off by using operating system commands.

For example, you can use the following command on the Oracle Linux operating system:

shutdown -h -y now

On the Oracle Solaris operating system, you can use the following command:

shutdown -i 5 now

Note:

You can use this command after logging in to the compute nodes.

The network switches do not have power switches. They power off when power is removed, by way of the PDU or at the breaker in the data center.

1.6.1.1 Power On Sequence

The power on sequence is as follows:

  1. Rack, including switches.

    Ensure that the switches have had power applied for a few minutes to complete power-on configuration before starting the storage controllers and compute nodes.

  2. Storage server heads attached to the chassis of the storage device.

    Wait for a few minutes for the storage appliance to boot and start NFS services and daemons.

  3. Compute nodes.

Note:

After power is applied, the LEDs on all compute nodes and storage server heads will start blinking after a few minutes. From the rear of the rack, you can see the green LEDs on the PSUs turn on instantly after power is applied. In addition, from the rear of the rack, you can see the display on the PDUs that lights up once power is available.

1.6.1.2 Power Off Sequence

The power off sequence is as follows:

  1. Compute nodes

    Note:

    Once the compute nodes are down, you can proceed to shut down the storage appliance.

  2. Storage server heads attached to the chassis of the storage device

  3. Rack, including switches

1.6.2 Emergency Power-off Considerations

If there is an emergency, then power to the Exalogic machine should be halted immediately. The following emergencies may require powering off the Exalogic machine:

  • Natural disasters such as earthquake, flood, hurricane, tornado or cyclone.

  • Abnormal noise, smell or smoke coming from the machine.

  • Threat to human safety.

1.6.2.1 Emergency Power-off Procedure

To perform an emergency power-off procedure for the Exalogic machine, turn off power at the circuit breaker or pull the emergency power-off switch in the computer room. After the emergency, contact Oracle Support Services to restore power to the machine.

1.6.2.2 Emergency Power-off Switch

Emergency power-off (EPO) switches are required when computer equipment contains batteries capable of supplying more than 750 volt-amperes for more than five minutes. Systems that have these batteries include internal EPO hardware for connection to a site EPO switch or relay. Use of the EPO switch will remove power from the Exalogic machine.

1.6.3 Cautions and Warnings

The following cautions and warnings apply to Exalogic machines:

  • Do not touch the parts of this product that use high-voltage power. Touching them might result in serious injury.

  • Do not power off Exalogic machines unless there is an emergency. In that case, follow the Emergency Power-off Procedure.

  • Keep the front and rear cabinet doors closed. Failure to do so might cause system failure or result in damage to hardware components.

  • Keep the top, front, and back of the cabinets clear to allow proper airflow and prevent overheating of components.

  • Use only the supplied hardware.