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Disk and Tape Performance

itsupport2012
Level 3

Hi! I'm running BackupExec 16, with some iscsi attached disk targets and some 6GB Sas connected LTO-5 drives, on which our general process is backup to disk to tape. It all works ok, just not getting the sort of speeds that we would like in the duplication stages, at best around 5000MB/min.


Currently the backups to disk are compressed using software compression, then duplicated out. Is there a big overhead in decompressing this during the duplicate process? Duplicating to another disk or a network share is about 1/2 to 2/3 of the speed of copying the backup files manually using windows explorer over the same network. The server isn't doing much in terms of resources either when it's running the duplication, just not getting the end performance.


Would it be best to remove the compression on the backup jobs and just let the tape drives do it instead? Of is there anything that can be changed to improve the decompression process (e.g. an ssd for the DB/temp files)

1 REPLY 1

jurgen_barbieur
Level 6
Partner    VIP    Accredited

in attach a best practise guide of veritas. it is always usefull to have a look at it.

dou you have configured separate disks for backupexec logs?

dou you have configured a separate disk for temporary storage?

did you simulate your settings without software compression?

are the exclusions for antivirus correctly configured?

what is the speed if you configure a similar job directly to tape?

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