Cisco Headend System Release 2.5 用户指南
3-2
Backing Up and Restoring the Informix Database
4001155 Rev B
Back Up the Informix Database
Introduction
This section contains the following information:
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Default DNCS tape drive configuration information
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A procedure to determine the configuration of the tape drive in use on your
system
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Procedures to back up the Informix database
Default Tape Drive Configuration
The script used by the DNCS to back up the Informix database uses the following
default tape drive configuration:
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Tape size:
7549747 KB
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Block size:
32 KB
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Device name: /dev/rmt/0h
This tape drive configuration is in use on a majority of systems. Occasionally,
however, the tape drive on a system may be configured with a different device
name, such as /dev/rmt/1h.
Note: The ‘h’ that appears at the end of device name /dev/rmt/0h or /dev/rmt/1h
Note: The ‘h’ that appears at the end of device name /dev/rmt/0h or /dev/rmt/1h
indicates that the system is to use a high density format (compressed) when writing
to the tape.
If you know that the device name of your tape drive is /dev/rmt/0h, you may skip
If you know that the device name of your tape drive is /dev/rmt/0h, you may skip
the following procedure, Checking Your Tape Drive Configuration, and continue
with Backing Up the Informix Database, later in this section. However, if you are
unsure of the device name of your tape drive, or if you just want to verify that the
device name is /dev/rmt/0h, complete the following procedure.