Skip to main content
NetApp Knowledgebase

How to increase the maximum queue depth per Logical Unit Number (LUN) in Windows with QLogic MC and Emulex Host Bus Adapter (HBAs)

Views:
255
Visibility:
Public
Votes:
0
Category:
snapmanager-for-microsoft-sql-server
Specialty:
san
Last Updated:

Applies to

FlexPod
SnapManager for Exchange (200+)
SnapManager for Microsoft SQL Server
SAN

Description

After adjusting the HBA queue depth on a QLogic HBA on a Windows 2003 Host, a performance monitoring tool such as Perfmon for Windows reveals that input/output (I/O) from the host to the filer improved on a per HBA basis, but not on a per LUN basis.

After further research:

  • Applications are confirmed to be functioning properly.
  • Filer shows no performance bottlenecks.
  • SAN fabric shows no performance bottlenecks.

 

CUSTOMER EXCLUSIVE CONTENT

Registered NetApp customers get unlimited access to our dynamic Knowledge Base.

New authoritative content is published and updated each day by our team of experts.

Current Customer or Partner?

Sign In for unlimited access

New to NetApp?

Learn more about our award-winning Support