I am having trouble getting a good throughput on my Hyper-V iSCSI system.
The system hosts 8 VMs for software deployment testing, a mix of Windows 7 x86 & x64 and Windows Server 2008R2
The system is getting an average iSCSI network speed of 1 to 3 MBps with bursts of 5-7 MBps and the NICs are showing under 1% utilization most of the time.
All NICs are running at (link speed) 1gbps.
The QNAP and the server are not being stressed by the load and I cannot find out why
I have attached screen-shots to help visualize the issue.
Any help with optimizing the configuration would be great.
QNAP: TS-419u / 4 x 2TB 7800rpm RAID 6
Switches: 2 x Netgear GS108
Host: 1 x HP DL165 G7 - Windows Server 2008R2 Enterprise
4 ports via HP NC362i Integrated DP Gigabit Server Adapter
192.168.1.19 - LAN Management - Switch 1
192.168.1.20 - iSCSI - Switch 1
192.168.1.21 - iSCSI - Switch 2
4th Port used in Hyper-V Virtual Network - Switch 1
4 ports via Intel(R) Ethernet Server Adapter I340-T4
192.168.1.22 - iSCSI - Switch 1
192.168.1.23 - iSCSI - Switch 2
3rd Port unused
4th Port used in Hyper-V Virtual Network - Switch 2
192.168.1.1 - QNAP Port 1 - Switch 1
192.168.1.2 - QNAP Port 2 - Switch 2
All NICs have Jumbo Frames to 9000 and all tasks are Offloaded
192.168.1.20 to QNAP Port 1 - Switch 1
192.168.1.22 to QNAP Port 1 - Switch 1
192.168.1.21 to QNAP Port 2 - Switch 2
192.168.1.23 to QNAP Port 2 - Switch 2
iSCSI is running MPIO with policy "Least Queue Length"
Windows Task Manager and Perf Mon
QNAP NIC Usage
QNAP CPU Usage
QNAP RAM Usage
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