These are some of very useful commands on Vsphere 5 to set MPIO RR to change every 1 iop. Now you can play and increase from 1 to 3 , 6 and 9 if you think 1 it`s too much. I left it to 1 as I got my 99% network card full utilazation on 4 nics so I did not bother to try with other numbers. Please cha...

Just to add a wish not sure if it already exists or not. The image.img file which Starwind uses to store data for that target can we get Thin provision option on that if it doesn`t affect performance too much. I know Dell EQ has that on it`s volumes/targets. I have a datastore of 7TB but to be hones...

Please see this : http://www.starwindsoftware.com/forums/ ... 95-30.html

You`ll see what a huge difference made RR to IOPS1 instead of default VMware IOPS 1000.

I`ll try to get you the commands tonight on how to change the RR IOPS on ESX5

how many nics you use with Starwind for ISCSI traffic ? Are you using ESX5 or 4 ? I can give you some CLI to set that.. I beleive the forum has some command on ESX 4

if you use MPIO RR with starwind just set RR to 1IOPS instead of default 1000IOPS and you`ll see the same exact seems you get with windows initiator.

Ok guys it`s all good now. My SAN2 is achiving the results I wanted. I manage to 3xtimes performance from Windows VM Guest only by changing the MPIO RR from 1000 IOPS to 1 IOPS. Results: From Windows ISCSI Initiator to SAN2 Running RAID6 with 16 drives. No optimization what so ever. READ: Seq: IOPS ...

I do have the same issue. With windows initiator it`s fast .. from VMware ESX VM is slow...

so decided to go with RAID6 all 16 drives as per local speed it`s fast and also has 2 parity drives. Now I did a quick test from a Windows initiator to a target with no cache on starwind and indeed I maximized all quad nics for both read and write sequential. I am very happy with this new top of the...

Hi everyone, I took a small break with new updates for my SAN2 which is the fastest one. Upgrade from 6GB RAM TO 24GB RAM DDR3( lots of ram for Starwind cache) Upgrade to the raid controller from Adaptec with 256MB cache to Areca top of the line ARC-1880dix-24 with 1 GB cache by default upgradeable ...

yeap its called MEM

Hey anton, Yes I applied the same settings to both. Then only to target , then only to initiator. It looks like when the target has the TCPACKFrequency to 1 then it`s the speed boost on SEQ READ by 50MB extra from 140MB let`s say to 190MB but some weird problems sometimes happend with RANDOM READ go...

He meant like DELL EQ has it`s own RR MPIO module path policy EMS i think it`s called or something like that...that integrates with the hyper visor [quote="anton (staff)"]How many IOPS had you configured for RR before link switch should be performed? Not sure what you mean under "own ...

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\<Interface GUID>Entry: TcpAckFrequency
Value Type: REG_DWORD, number
Valid Range: 0-255
Set to 1.

where do u change this ? on starwind sans and also on WIndows initiators...vms etc ?

i have the same problem with v5.7 Why do u say to put 2 instead of 1 ? 1 disables it right ?

I dont think so because when I run same test same size 5GB on a target that`s a ramdisk it`s killing my network using all 4 Gb nics to 98% and giving me results of 450MB.. i posted them up there... So it must be something else... I am doing lots of testing and trying to figure it out. Because TCPACK...