An attempt to delete NFS datastore from a ESXi host returns the error:
Sysinfo error on operation returned the following status: Busy
Which two statements could explain this failure? (Choose two.)
A.
NFS datastore is a part of Storage DRS Cluster.
B.
NFS.VolumeRemountFrequency value is set to 30.
C.
Storage I/O Control is enabled on NFS datastore.
D.
NFS datastore has running or registered virtual machines.
I would say A and D
http://www.mindthevirt.com/unmount-vmware-datastore-device-busy-399
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C and D looks more logical for me, as your link references to HA and datastore usage.
Source: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.html.hostclient.doc/GUID-ED24BA81-E477-41E4-8271-8D7349A38941.html
Note:
Make sure that the datastore is not used by vSphere HA heartbeating. vSphere HA heartbeating does not prevent you from unmouting the datastore. However, if the datastore is used for heartbeating, unmounting it might cause the host to fail and restart all active virtual machines.
Before unmounting a datastore, also make sure that the following prerequisites are met:
No virtual machines reside on the datastore.
The datastore is not managed by Storage DRS.
Storage I/O control is disabled for this datastore.
About this task
Do not perform any configuration operations that might result in I/O to the datastore while the unmount is in progress.
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To be clear, I’m not sure, as SDRS is also mentioned. I think, SDRS can handle this, or we have an outdated question.
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To unmount a datastore, no VMs should reside on the datastore. The ESXi host will lose access to the datastore and will be unable to run VMs that reside on it. The datastore must also be removed from any Storage Distributed Resource Schedule (SDRS) clusters. Placing the datastore in SDRS maintenance mode is not sufficient. Storage IO Control (SIOC) must also be disabled on the datastore.
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