Hi @ all,
I got a performance Issue on a Server 2016 VM on an ESX 6.7
There are 2 Disks configured. 1st with 70GB for the System - the 2nd with 3TB for Files.
If I copy files inside the VM to the C:\ Drive (70GB), I have copy speeds around 110MB/s (More is not possible because of the Network)
But if i copy files to the D:\ Drive (3TB), I only get 2-8MB/s.
Both disks are on the same datastore and configured the same way (same SCSI controller, Thick-Lazy etc.)
The 3 TB VMDK was copied via VMWare Converter from another ESX 6.7 (Server 2008R2 VM) to this host and just mounted to this Server 2016 VM, so that all NTFS Permissions are still available.
I don't know why the performance on this copied disk is so bad. On the old VM it works perfectly.
Please help.
Thank you
> The 3 TB VMDK was copied via VMWare Converter
Please check if the 3 TB-vmdk is really using the ESXi-vmdk format.
So open the vmdk-descriptorfile with a texteditor and check the line starting with RW.
It should reference a flat.vmdk - if it references a file named *-s001.vmdk then you need to convert the VMDK to ESXi format first.
In case you ask how to read a VMDK-descriptorfile ?
Connect to ESXi with WinSCP - go to directory of the VM.
You will see a different file-listing then you will get with the Datastorebrowser.
Select the small vmdk-file - right click it and select > embedded editor.
Hi,
This is the Content of the Descriptorfile of the 3TB VMDK:
# Disk DescriptorFile
version=1
encoding="UTF-8"
CID=c80cfb36
parentCID=ffffffff
createType="vmfs"
# Extent description
RW 6442450944 VMFS "s001.xxxx.de-flat.vmdk"
# The Disk Data Base
#DDB
ddb.adapterType = "lsilogic"
ddb.deletable = "true"
ddb.geometry.biosCylinders = "387034"
ddb.geometry.biosHeads = "255"
ddb.geometry.biosSectors = "63"
ddb.geometry.cylinders = "401024"
ddb.geometry.heads = "255"
ddb.geometry.sectors = "63"
ddb.longContentID = "9c8b63ca8e3709b4ab081304c80cfb36"
ddb.uuid = "60 00 C2 9a d3 1c af af-d3 bf 60 fe 64 9a 0f 53"
ddb.virtualHWVersion = "14"
It looks similar to the 70GB one.. Is this the correct format?
Thank you in advance
Is the name of the VMDK really "s001.xxxx.de" ?
Looks a bit strange !
Please attach latest vmware.log
> Just changed Servername to s001 and domainname to xxxx.de
Why you would do that after I told you that a vmdk name containing exactly that string would be an indicator for a misconfigured virtual disk is beyond me.
Anyway - you seem to use a feature inside the guest called "Gi Jane"
The log file is full with entries for Guest: vsep: AUDIT: VFileFltPostOpCreate which apparently slows down the VM significantly.
Check your configuration for GI Jane and disable DEBUGGING functions - see GI Thin Agent Logs
Sorry - cant help you with that function - never saw it before.
Hi Continuum,
i tried to deactivate the GI Thin Agent, but the required settings in the guest vm are not set. So the logging should be disabled.
As i mentioned the slow performance only occures on one vmdk. Others in this VM are working fine.
Do you have any other suggestions for me?