Questions[datastore](server)

I have a VMware 6.7 environment running as a single datacenter, however with two clusters (say A-cluster and a B-cluster), each with 3 esxi hosts. A VSAN is configured on these clusters and has two VSAN datastrores (A-datastore and B-datastore) for A-cluster and B-cluster respectively.

Now, I have a iso file in the A-datastore and I'm trying to deploy a VM in B-cluster and in the process of deploying, I would like to mount the iso file present in the A-datastore. When I try to attach the CD/DVD and choose "Datastore ISO File" option, I only get to browse the B-datastore, but not the A-datastore.

Is this even possible?

So I had to remotely shut down my servers last night as the air conditioner crapped out on us. I shut down the VMs and then the hosts. Fired up the 2 hosts today which auto start the VMs. Datastores for the VMs are isci LUNs located on a Synology NAS that we have, the NAS was not shutdown. For some reason when I booted everything back up my email VM shows as inaccessible and I am getting all sorts of errors in the logs saying "ATS-ONLY VMFS volume 'Synology-Email server' not mounted. Host does not support ATS or ATS initialization has failed" all of my other VMs are perfectly fine with other datastores on the same NAS.

When browsing to the datastore in Vsphere client or vcenter then I cannot mount, unmount or browse files as they are all greyed out. I have tried restarting both the host and the NAS a few times.

ESXi 6.0 on both hosts

I'm looking for a good solution to a VMware ESXi environment issue where there's no vCenter available.

What's the best way to move a VM from one datastore to another on a single ESXi host, while maintaining the VMDK thin-provisioning?

This is a standalone server that's been expanded with another drive array/datastore. I'd like to move the data contained in the old array to the new.

Edit: The destination datastore size is actually smaller than the source. I do not have enough room to copy the thick file.

Is there a tool that can be used to determine the maximum IOPS on my Datastores? Due to the way the SAN is configured (poorly by the installer) it's difficult to calculate this and we want to know where the ceiling is. It looks like we have lots of headroom but we want a way to very this.

I am trying to add a virtual disk using a VMFS datastore with 1.98 TB of capacity and 85 GB used. I then power on the virtual machine, and it gives me the Insufficient disk space on datastore error. And so I removed the newly created disk and try to power on and it gives me the same error! I don't want to panic but I need some good advice on how to fix this and why this is happening...

Here is the configuration:

Datastore: vmfs_temp
Virtual Machine Properties - Options tab
Config file: [vmfs_temp] VM-ASSS16-INT-SQL2K8R2-1/VM-ASSS16-INT-SQL2K8R2-1.vmx
working location: [vmfs_temp] VM-ASSS16-INT-SQL2K8R2-1/
swapfile location: default

EDIT: screenshot showing disk sizes