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On HDP3500, it is slow to make Oracle backup through BE

Publication Date:  2012-09-18 Views:  63 Downloads:  0
Issue Description
It is only 200-300Mb/s to make oracle backup through BE on HDP3500, other storage can be 2000-3000Mb/s.
Alarm Information
Handling Process
Enter into MegRAID interface, Click ‘Virtual Drivers which need to be modified, check ‘Properties’, click ‘operations’.

Click ‘set virtual disk properties’, modify ‘write policy’ to ‘write back’.

Modify ‘IO policy’ to ‘cache IO’.

Click ‘go’, come out a dialog.

Click ‘yes’, click ‘virtual drivers--->>>properties’ to check.

Root Cause
Engineer choose default configuration Write Policy--->>>Write Through
IO Policy--->>>Direct IO, so it is slow.
Please configure as HDP3500MegRAID direction seriously.