Seagate ST39175LW Guía para resolver problemas descargar pdf (Pagina 66)

Verify NetBackup Access to SAN Devices

52 NetBackup ServerFree Agent System Administrator’s Guide

▼ Verify passthru device path visibility

8. For HP-UX: Enter the following to list all passthru devices:

ioscan -nf

a. If all devices now appear, enter the following to regenerate HP-UX special files:

insf -e

Then go to step 10 on page 53.

b. If some devices do not appear in the ioscan output, check hardware connections

to the devices that are not appearing. Then repeat step 8.

Note On HP-UX, there is a limit of eight devices per target. For instance, if you have a

JBOD disk array consisting of ten disks, and the array is connected to a bridge, it

may be that only the first eight disks in the array are accessible.

9. For Solaris:

a. Perform an sgscan to list all passthru devices. Check for proper output and

recognition of devices.

Here is sample output from sgscan:

barney# sgscan

/dev/sg/c0t6l1: Disk (/dev/rdsk/c1t6d1): "SEAGATE ST39175LW"

/dev/sg/c0t6l4: Tape (/dev/rmt/2): "QUANTUM DLT7000"

/dev/sg/c0t6l5: Changer: "HP C6280-7000"

b. If tape devices still do not show up, make sure you have entries for all SCSI target

and LUN combinations in the sg.links and sg.conf files. Refer to the Media

Manager Device Configuration Guide, Chapter 2, under “Understanding the SCSI

Passthru Drivers.”

- If tape devices are fibre attached, make sure you have entries for the tape

devices in the above files.

- If tape devices are behind a bridge (or third-party copy device), make sure

you have entries for the tape devices AND for the bridge/third-party copy

device.

For an example, refer to “Solaris only: Example for sg.links, sg.conf, and st.conf

files” on page 54.

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Seagate ST39175LW Guía para resolver problemas Pagina 66