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Chapter 4, SAN Configuration for ServerFree Agent 61

Create Offhost Backup Configuration Files

Determining Requirements

The following determines which values are required in the 3pc.conf file.

identification descriptor

The identification descriptor is optional, and is not supported by all vendors. (To produce

this descriptor, the device must support a page code inquiry with a type 2 or 3 descriptor

of less than 20 bytes.) The NetBackup bptpcinfo command (explained below) will

detect the device’s identification descriptor and place it in the 3pc.conf file if the

identification descriptor is available.

Even when this descriptor is available, some third-party copy devices do not support its

use.

Note If an identification descriptor is available and the third-party copy device supports

it, the descriptor is used to identify the device on the SAN; in this case, there is no

need for the LUN or world-wide name. To determine whether your third-party

copy device supports identification descriptors, go to www.support.veritas.com

(see “ServerFree Agent Information on the Web” on page xiv).

world-wide port name

If an identification descriptor is not available or the third-party copy device does not

support identification descriptors, the device’s world-wide port name must be included in

the 3pc.conf file.

What bptpcinfo Automatically Provides

The NetBackup bptpcinfo command detects some or all of the device information

needed for the offhost backup and places that information in the 3pc.conf file, as

follows:

◆ The bptpcinfo command provides the device path, serial number, identification

descriptor (if available), and the LUN.

◆ The bptpcinfo command does not provide the world-wide name.

What the Backup Methods Require

For the NetBackup Media Server offhost backup method, the bptpcinfo command

provides all the information you need (no manual editing is required).

The Third-Party Copy Device method requires more information for each disk. In some

instances, the bptpcinfo command cannot gather all the information required.

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Seagate ST39175LW Guía para resolver problemas Pagina 75