Now everything is running really smooth and quite fast. I have done a ATTO diskbenchmark on all 4 CSV HA targets simultaniously (queue depth=10, 2GB size) and received 26000 I/Os at the Starwind Performance Monitor (overall). I know physically this is not passible (for our Storages), but with over ...

At Saturday I set the following parameters to all my iSCSI NICs on Storage and Hyper-V side (except Syncchannel): => HKLM->System->CurrentControlSet->Services->Tcpip->Parameters->Interfaces->“<Interface GUI>“ DWORD32-> TcpAckFrequency = 1 for INTEL NICs on Server-Core: => HKLM->System->CurrentContro...

@starneo, Did you follow the ACK recommendations along with the global chimney ones? If not, perform the following commands: netsh int tcp set global chimney=disabled netsh int tcp set global rss=disabled Verify the settings with this command: netsh int tcp show Also, be sure to have disabled the R...

As I posted in another forum thread, I do have the same issues.
We use MPIO (round robin) over 4 1xGibit connections (iSCSI).
I have 4targets each with 4GB Cache and 5000ms expery period.

Some Benchmarks:

Some Benchmarks from our HA Set:

Now I have a question for my own. We update from 5.5 to 5.7 last weekend. Since that we encountered heavy load on the physikal raids on both Starwind Storages (it is a HA set), especially read I/O but write too. We do have 4 targets each with 4GB Cache and one Target with 2GB Cache. The four targets...

I'm sorry, but could you clarify your question - what testing are you talking about?. Running IO meter before you upgrade without coming in on a weekend, on a MS CLuster setup. Since on the cluster the drives become a link under %OS Drive%:\ClusterVolume . The only ways I can think of offhand are c...

To be clear, this resolved the sync speed issue, as far as I can tell for now. If my performance issue is resolved I can test tomorrow - the full sync will taks ~8h. Something else I noticed, I started the HyperV Cluster and 9 VMs on it. The full sync is still in progress. Ths sync speed seems to be...

Okay guys, I found the solution for the sync problem. I had to enable the Receive Side Scaling (RSS) in the Myricom 10GBe Network Card. The RSS queue is 4. The global settings posted here http://www.starwindsoftware.com/forums/starwind-f5/recommended-tcp-settings-t2293.html did not work (I have set ...

I now do a full sync of all 6 targets you can see below how slow it is. It should be at ~60% ...
I now have no more ideas ...
I need some help with this.

I tested a full sync with one target, its very small because it contains the hypervquorum. Its 10GB. I attached a screenshot of my syncperformance, as you see it is juming up and down in average 2-3% of 10Gbit. Normaly it has to be 10% of 10Gbit, and it was ... sometimes. *edit* There is something e...

I upgraded both starwind storages now and dird some testing. The good news is, I had no BSOD / Starwind service crash till now. The bad news is, I do now have performance issues. For testing the performance of the cluster I run Sisoft Sandra 2011 in a VM, before the update to 5.6 I had ~470MByte Rea...

great! *deleted* I'll upgrade both nodes now

okay, understood.
So I can change the percentage when starwind will do a full sync from 0.01% to lets say 0.1% or 1%? Can you tell me where?

Oh, so that means, runnning a Full HyperV Cluster (100 - 150 VMs) with the Starwind HA Set and rebooting one Node for installing Windos Updates/ServicePack or a Starwind Update will result to 99% in a full sync? (Rebooting takes arround 3 mins for Windows + 10-15 mins for starwind service) Thats goo...