NonStop S-Series Planning and Configuration Guide (G06.25+)

Contents
HP NonStop S-Series Planning and Configuration Guide—523303-015
viii
10. Planning for System Availability and Support
Changing an Existing System 9-8
Changing the System Name or System Number 9-8
Adding a System Enclosure 9-8
Adding Memory to a Processor 9-8
Adding a System Console 9-8
Enclosure Interleaving for Storage Devices 9-9
Configuring $SYSTEM Disk Slots 9-11
Adding an Internal Disk Drive 9-12
Changing the Configuration of a Disk Drive 9-12
Adding a Tape Drive 9-13
Changing the Configuration of a Tape Drive 9-13
Adding a ServerNet Adapter 9-14
Changing the System Configuration of a ServerNet Adapter 9-14
Adding a SWAN or SWAN 2 Concentrator 9-15
Changing the Configuration of a SWAN Concentrator 9-15
Adding an AWAN Server 9-16
Changing the Configuration of an AWAN Server 9-16
Adding or Changing the WAN Subsystem 9-16
Adding an Open SCSI Device 9-17
Adding or Changing the Configuration of Other Peripheral Devices 9-18
10. Planning for System Availability and Support
Related Reading 10-1
System Outage 10-1
How Availability Is Measured 10-2
Outage Minutes/Year 10-2
Minimizing Planned Outage Frequency 10-2
Evaluating System Performance and Growth 10-3
Providing Adequate Computer-Room Resources 10-3
Configuring Your System to Accommodate Future Changes 10-3
Implementing a Formal Change-Control Process to Manage Change 10-4
Minimizing Planned Outage Minutes 10-4
Preventing Unplanned Outages 10-5
Causes of Unplanned Outages 10-5
Problem Management 10-5
Minimizing Unplanned Outage Minutes 10-6
Power Failures 10-6
Power Failure Functional Description 10-6
Calculating the Maximum Power-Fail Delay Time 10-7