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Contents

  1. Preface
  2. Chapter 1 Understanding the Installation Flow
    1.  1.1 Workflow for the SPARC M12-1
    2.  1.2 Workflow for Adding the PCI Expansion Unit
  3. Chapter 2 Planning and Preparing for System Installation
    1.  2.1 Safety Precautions
    2.  2.2 Items Requiring Confirmation Before Installation
    3. Click 2.3 Confirming the Physical Specifications of the System
    4. Click 2.4 Confirming Rack Specifications
    5. Click 2.5 Checking Environmental Conditions
    6.  2.6 Checking Acoustic Noise Levels
    7.  2.7 Checking Cooling Conditions
    8. Click 2.8 Checking the Power Input Type
    9. Click 2.9 Preparing Power Supply Facilities
    10. Click 2.10 Checking External Interface Port Specifications
    11.  2.11 Checking the Functions of the Operation Panel
  4. Chapter 3 Installing the System
    1.  3.1 Preparing the Necessary Tools/Information for Installation
    2. Click 3.2 Confirming Delivered Components
    3.  3.3 Confirming the Rack
    4. Click 3.4 Mounting the Chassis in a Rack
    5. Click 3.5 Mounting Optional Components
  5. Chapter 4 Connecting Cables
    1.  4.1 Connecting Cables to the SPARC M12-1
    2.  4.2 Connecting Cables to the PCI Expansion Unit
  6. Chapter 5 Performing an Initial System Diagnosis
    1.  5.1 Connecting the System Management Terminal to the Chassis
    2.  5.2 Turning On the Input Power and Starting the XSCF
    3.  5.3 Logging In to the XSCF
    4.  5.4 Checking the XCP Version
    5.  5.5 Checking the Altitude Setting
    6.  5.6 Setting the Time
    7.  5.7 Performing a Diagnosis Test
    8.  5.8 Checking the Component Status
  7. Chapter 6 Making the Initial System Settings
    1.  6.1 Setting the Password Policy
    2.  6.2 Setting a User Account and Password
    3. Click 6.3 Configuring the Telnet/SSH Service
    4.  6.4 Configuring the HTTPS Service
    5. Click 6.5 Configuring the XSCF Network
    6.  6.6 Configuring Memory Mirroring
    7.  6.7 Creating a PPAR Configuration List
    8.  6.8 Checking the Physical Partition (PPAR) Status
    9.  6.9 Synchronizing the Physical Partition (PPAR) Time and XSCF Time
    10. Click 6.10 Registering a CPU Activation Key
    11.  6.11 Assigning CPU Core Resources
    12.  6.12 Starting/Stopping the System (PPAR)
    13.  6.13 Installing Oracle Solaris
    14. Click 6.14 Saving Configuration Information
  8. Appendix A Troubleshooting
    1.  A.1 Understanding the Usual Problems and Their Corrective Actions
    2. Click A.2 Understanding Commands for Troubleshooting
  9. Appendix B Setup Command Workflow
  10. Appendix C Installation Procedure Checklist

2.5.2 Ambient Relative Humidity


2.5.2 Ambient Relative Humidity
To process data safely, the optimal ambient relative humidity is 45% or higher but less than 50%. The reasons for this are as follows:
  1. A humidity in the optimum range can protect the system from corrosion issues caused by high humidity
  2. A humidity in the optimum range means that even a failure of the air conditioning facilities does not cause the system to suddenly stop
  3. A humidity in the optimum range can prevent failures and malfunctions caused by electrostatic discharge

A relative humidity that is too low is conducive to generating a static electricity discharge. The resulting intermittent interference may cause a failure or temporary malfunction.

Electrostatic discharge is more likely to occur and harder to eliminate at locations with a relative humidity below 35%. Electrostatic discharge becomes a critical issue when the relative humidity falls below 30%. The set optimal relative humidity range is stricter than the guidelines applied to indoor locations with more relaxed environmental conditions such as general office environments. However, if the server is installed in a server room, this condition is not difficult to meet because server rooms utilize highly efficient moisture-proof materials and have fewer ventilation cycles.

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