We are taking backup of our application data(cobol file system, AIX/unix) before and after EOD job runs. The data size is approximately 260 GB in biggest branch. To reduce the backup time, 5 parallel execution is scheduled through control-m which backups up the files in 5 different *.gz. The job takes approximately 90 minutes to complete. Backup is done locally and later on it's passed to different location for retention.
Issue:
Each execution takes approximately 10% CPU which is putting heavy load on the server. This is causing the issue as the server is hosting multiple branches.
gtar -cvzf ${DBTBKUP}/${DATADIR}/${DATADIR}${BKUPSEQ}.gz [${FILESET}*
${DBTBKUP}/${DATADIR}/${DATADIR}${BKUPSEQ}.gz - {backup directory}
[${FILESET}* - fileset backed-up
Is there anyway, we can improve the backup further? Is there any new features in GTAR to fasten the backup or any new backup command which can replace GTAR? Any suggestion would be really appreciated.