The 'open' call failed for database/archive ..with error number 13 (Permission denied).

Dear Team,

Folowing was the error received in the backup server errorlog when dump tran was executed

use master

go

dump transaction XXX using config = 'XXXLOG'

go

Changed database context to 'master'.

Backup Server session id is: 134. Use this value when executing the 'sp_volchanged' system stored procedure after fulfilling any volume change request from the Backup Server.

Backup Server: 4.41.1.1: Creating new disk file /backupAll/CJ3/sybase/log_backups/CJ3.TRAN.20141117.110002.000.

Backup Server: 4.141.2.40: [7] The 'open' call failed for database/archive device while working on stripe device '/backupAll/CJ3/sybase/log_backups/CJ3.TRAN.20141117.110002.000' with error number 13 (Permission denied). Refer to your operating system document

ASE version: ASE 15.7 SP102 on AIX 7.1

What is the exact reason for this error?

Regards

Rajesh