EMC VNXe3300- While Cloning any ".vmdk" file at Vcentre level the Performance is very low

Any SCSI errors in the vmkernel.log?

Are the VAAI primitives enabled on the ESXi hosts?

1. Open the VMware vSphere Client.

2. In the Inventory pane, select the ESXi/ESX host.

3. Click the Configuration tab.

4. Under Software, click Advanced Settings.

5. Click DataMover.

Ensure the following parameters are set to 1 (Enabled)

HardwareAcceleratedMove

HardwareAcceleratedInit

HardwareAcceleratedLocking

Now check the storage device that the datastore resides on to see if the storage array supports the VAAI primitives:

esxcli storage core device vaai status get

We are looking for the following status:

Clone Status: Supported

DataMover all value set on 0.

Storage is supported VAAI Configuration.

Stil need to set the DataMover value to 1?

I think you'll find that VNXe 3300 only supports VAAI primitives for NFS datastores, and that is configured by a vib/plugin that must be installed on each ESXi host.

Yes Brett, You are right but we are using only VMWare & ISCSI LUN's on this EMC VNX.

All Other file like .ISO and all are copying very fast on datastores but only .VMDK file(machines) taking lot of time 200 GB - 9 to 10 hrs.

Any IDea, If any thing needs to check from Vcentre, ESX OR drivers side.

Are you just copying the vmdk's by browsing the datastores and copying/pasting to another ? I've never found this to produce great speeds (much like copying up/down using scp).

..or are you actually doing a cloning operation from vCenter ?

How is the performance when copying to your actual running vm's ?

As Conor suggested, also check the vmkernel.log for errors.