Hello,
Please check if the version of Linux is compatibke with backup exec using the foll technote:
Titre : VERITAS Backup Exec (tm) 9.1 for Windows Servers - Software Compatibility List (SCL)
http://support.veritas.com/docs/261695
Also refer the foll technotes:
Title : Troubleshooting the Backup Exec UNIX Agent
http://support.veritas.com/docs/192204
Title :Troubleshooting the inability to see or attach to systems with the Backup Exec Agent for Linux / UNIX
http://support.veritas.com/docs/206443
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