Problem to detect all mounted FS on Windows

[cparrot]

Hello,

We have a problem with drive detection on Windows.
We have 5 virtual drives, but only one of them is detected (cf screenshot).
All of these drives are seen as NTFS file system.

Zabbix detects only some discs:

# zabbix_get -s my_server -p10050 -k "vfs.fs.discovery"
{
	"data":[
		{
			"{#FSNAME}":"A:",
			"{#FSTYPE}":"UNKNOWN"},
		{
			"{#FSNAME}":"C:",
			"{#FSTYPE}":"NTFS"},
		{
			"{#FSNAME}":"D:",
			"{#FSTYPE}":"UNKNOWN"},
		{
			"{#FSNAME}":"X:",
			"{#FSTYPE}":"NTFS"}]}

Idem by snmp:

# snmpwalk -v 2c -c public my_server HOST-RESOURCES-MIB::hrStorageDescr
HOST-RESOURCES-MIB::hrStorageDescr.1 = STRING: A:\
HOST-RESOURCES-MIB::hrStorageDescr.2 = STRING: C:\ Label:  Serial Number c0c72038
HOST-RESOURCES-MIB::hrStorageDescr.3 = STRING: D:\
HOST-RESOURCES-MIB::hrStorageDescr.4 = STRING: Virtual Memory
HOST-RESOURCES-MIB::hrStorageDescr.5 = STRING: Physical Memory

Errors:

# zabbix_get -s my_server -p10050 -k "vfs.fs.size[s:,pfree]"
ZBX_NOTSUPPORTED
# zabbix_get -s my_server -p10050 -k "vfs.fs.size[z:,pfree]"
ZBX_NOTSUPPORTED

It there a limitation in size of the network drives to monitor?
Do you have any idea?

Thank you in advance.

Cristhian

Nb: Our version zabbix server is in 2.0.5.
Zabbix agent client is in latest version 2.0.4.