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Backup Exec backup job rate very slow

Janaka_Sampath
Level 4
Partner Accredited

Hi 

SQL server 2008(Server 2008 R2) and Domain server (Server 2008 R2) backup job rate very low. Normaly this will run at 620 MB/min but now it run 200 MB/min. My Backup exec server vertion 2014 SP2. It run on the CASO environment. and all data backup to the deduplication storage. 

Note 

After i restart the SQL server backup job rate speed incresly to the 1000 MB/min. But after one day the job rate decresse to the 200 MB/min

 

 

3 REPLIES 3

CraigV
Moderator
Moderator
Partner    VIP    Accredited

Hi,

 

Check for the following:

1. Make sure any antivirus installed isn't perhaps actively scanning the BE services, including the SQL service. If it is, put in exclusions for them.

2. Check for disk defragmentation on the server in question.

Thanks!

Gurvinder
Moderator
Moderator
Employee Accredited Certified

what is the job rate with Client side deduplication and Server Side deduplication. You can set that in the backup job. Have you also tried to see if the dbcc checks are taking a long time , that can be the case sometimes (for a test you can also uncheck the database consistency check option in Backup Job under SQL to see if the Job rate increases).

LegAEI
Level 5

https://support.symantec.com/en_US/article.HOWTO74446.html

These two sections most importantly:

 

The following best practices apply to using deduplication with SQL:

  • Set the option Use snapshot technology as a backup job property for the SQL backup job. This option allows data to be deduplicated in the most effective way.

  • Use Microsoft SQL Server Management Studio to restrict SQL's use of physical memory. This option can be set for each SQL instance by selecting Properties > Memory. Restricting SQL to use 85% to 90% of total physical memory can prevent a situation in which backup rates may be reduced to 10% of the expected rate due to memory restrictions.

The following best practices help you to use the Deduplication Option effectively:

  • Use client-side deduplication for all deduplication jobs, except in the following situations:

    • The remote computer has limited or no resources available to dedicate to the deduplication process during backup jobs.

    • Your environment contains multi-server configurations of Microsoft SharePoint servers, Microsoft Exchange 2010 DAG servers, and Symantec Enterprise Vault servers.

    • You want to back up virtual machines with the Agent for VMware.