Sometimes it could happen, that you get inaccessible files on your ESXi Cluster with VSAN.
Here are the Steps to clean up inaccessible files with vCenter Server on Windows 2012R2:

Connect to vcenter server with rvc.bat in C:\Program Files\VMware\vCenter Server\rvc

login with administrator@vsphere.local@localhost:

C:\Program Files\VMware\vCenter Server\rvc>rvc.bat administrator@vsphere.local@localhost
 password:
 0 /
 1 localhost/
 >

Check command: vsan.check_state "pathToYourCluster"

> vsan.check_state /localhost/myDatacenter/computers/Cluster01/
 2016-07-14 07:34:49 +0200: Step 1: Check for inaccessible VSAN objects
 Detected 1 objects to be inaccessible
 Detected <strong>bf9c6a57-9cc3-d20c-ccb3-a0369f89ecac</strong> on 192.168.1.4 to be inaccessible

2016-07-14 07:34:50 +0200: Step 2: Check for invalid/inaccessible VMs

2016-07-14 07:34:50 +0200: Step 3: Check for VMs for which VC/hostd/vmx are out
 of sync
 Did not find VMs for which VC/hostd/vmx are out of sync

Delete inaccessible VSWP Objects command:
vsan.purge_inaccessible_vswp_objects /localhost/myDatacenter/computers/Cluster01/

vsan.purge_inaccessible_vswp_objects /localhost/myDatacenter/computers/Cluster01/
 2016-07-14 07:35:00 +0200: Collecting all inaccessible Virtual SAN objects...
 2016-07-14 07:35:00 +0200: Found 1 inaccessbile objects.
 2016-07-14 07:35:00 +0200: Selecting vswp objects from inaccessible objects by c
 hecking their extended attributes...
 2016-07-14 07:35:00 +0200: Found 0 inaccessible vswp objects.

Delete other inaccessible objects:
Connect to ESXi Server and issue the following command, which should show you the related objects:

/usr/lib/vmware/osfs/bin/objtool getAttr --bypassDom -u bf
9c6a57-9cc3-d20c-ccb3-a0369f89ecac -c

Check the output of the related object and make sure you can delete this file.

Delete the file with:

/usr/lib/vmware/osfs/bin/objtool delete -u bf9c6a57-9cc3-d
20c-ccb3-a0369f89ecac -f -v 10

Run check in vSphere Web Client on "Cluster" -> "Monitor" -> "Virtual SAN" -> "Health" -> Click on "Retest".
Everything should be ok now.