how would you expect results other than what we recieve when connecting a physical host to the storage network ?

regards

do mean 1. to create a ramdisk, mount it inside ESX, write VMFS partition, mount inside a VM and test the speed or 2. mount a ramdisk as an iscsi volume on a server hosted within our ESX ? i have done the former, and posted the results further up this thread, i can't do the later as the storage lan ...

Thanks, but as we can't easily change / test this i'm unsure to the next step, it seems to be an issue between VMFS and your system the network has tested fine, the local disks test fine, if anyone is reading this software and using it with ESX/VMFS i would be greatful to hear from you, as currently...

Unfortunatelly we don`t have one, but I`ve found the doc that should give you the basic idea: http://technet.microsoft.com/en-us/library/dd758814(v=sql.100).aspx And I want to remind you that I strongly recommend to use GPT instead of MBR, which should eliminate disk aligns issues. GPT on what the ...

I have been looking at the disk alignment recently but i havn't been able to find a suitable tool / test to figure out if the discs are correctly aligned do you have any resources (starwind or otherwise) that you could suggest to work through, i believe i have to check from raw stripe, through starw...

is GPT that much of a factor, as the disk speed on the starwind box, and the physical host is as expected

regards

Two questions for now: *Can you confirm that you have used GPT formatting instead of MBR on every layel that is involved into the test? *Can I ask if you have some additional Windows Server box that you can use to run the IOmeter (that should exclude the problems in the virtualization layer) ? Than...

I have tested a RAM Disk on a) a physical server (dell 1950 iii) quad 1gb links in mpio b) a virtual server (hosted on our ESX 4.1 box) quad 1Gb Links, Round robin mpio set to 1 Both have jumbo frames enabled RamDisk Side By Side.jpg I can't see what else i can do, it appears the disks are fine, it ...

apologies but do you mean via a Ramdisk connection , or another benchmark ?

regards

do you need anything further from myself to help diagnose the issue ?

regards

This shows the speed on the local disk LocalDisk.jpg this is the speed via the ESX host i was testing, this has multiple iSCSI connections iops set 1 etc... RAMDISK-ESX.jpg obviously some issues here so i connected a physical server (dell 1950 III, on board nic) to the ram disk and i get this RAMDIS...

I have seen the document, i have run some ATTO tests and will use any recommendations in the document tomorrow to test.

Hardware Wise for the Starwind iSCSI Box DL580 G5 System 4 x QuadCore Intel(R) Xeon(TM) Processor MP 2.4 GHz (x64 Family 6 Model 15 Stepping 11) 32Gb RAM Running Windows 2012R2 Networking Normal - dual onboard broadcom nics ISCSI - Quadport Intel Pro1000 PT Driver is Intel 9.15.11.0 Jumbo Frames is ...

Hi Thanks for your message, i'll compile everything for you

Regards

Thanks for the reply and no problem Ref the Braindump :) currently i have 2 1Gb Cards in the ESX hosts and a Quadport 1Gb card in the Starwind box, I've now set up the round robin to 1 iops, and am no seeing a copy/paste start at around 150MB/s which drops to around 60MB/s after around 2Gb of copy (...