Apologies, I'm not a DBA so if I miss key info required, please let me know.
We have a SQL 2008R2 server that, when busy, is generating high average disk queue length on the Windows VM but we're not seeing the same queue length in SANHQ.
Additionally, we've run SQLIO and can get around 9000 IOPS out of the VM but the SQL processes that run are struggling to get over 3500.
Where can I look to try and unlock the IOPS potential of the VM or is this just a fact of life with SQL and SANs?