I run into this occasionally, I think in last 3-4 years being SQL Server PFE, I have seen this issue total of 4 times. So
Category: Windows 2008 R2 Clustering
Slow disk write performance when you use a back-end SAN on a computer that is running Windows Server 2008 R2
Interesting fix was released today, your WRITE performance might be poor due to incorrect priority in DPC in Windows 2008 R2. If you have write
Setting up iSCSI Target and Initiator
I am sure everyone has realized, when it comes to configure Servers I am the last person that should get near them. I am good
SQL Canada (SQLCAN) 