> Services > Disk Service (Local API, SNMP, WMI)

Disk Service (Local API, SNMP, WMI)

The Disk service monitors a hard disk for its used, free, and total disk space.

Service Type

Local API, SNMP, and WMI

Instances on a Device

15

Device Class for Disk (Local API)

Server - Generic, Workstation - Generic, Laptop - Windows, Server - Windows, and Workstation - Windows

Device Class for Disk (SNMP)

Server - Generic, Workstation - Generic, Other, Printer, Scanner/Camera, Switch/Router, Laptop - Windows, Server - Windows, and Workstation - Windows

Device Class for Disk (WMI)

Laptop - Windows, Server - Windows, and Workstation - Windows

Monitored By

Agent (Windows, Red Hat Enterprise Linux, and Mac OSX 10.4) and Windows Probe (SNMP and WMI)

Scan Interval

60 minutes

Drive Designation Letter

The designation letter of the hard disk or partition to monitor. For example, C: or D:.

Volume Index (SNMP only)

The index of the SNMP object representing the partition of hard disk to monitor.

Properties Queried and Calculations Performed (WMI only)

Namespace root\cimv2
WMI Class Win32_LogicalDisk
WMI Property 0 Size
WMI Property 1 FreeSpace

To configure Volume Name or Volume Index

Walk the .1.3.6.1.2.1.25.2.3.1.3 SNMP OID on the target device's IP address to determine which disks are available for monitoring.

.1.3.6.1.2.1.25.2.3.1.3.1 "A:\"

.1.3.6.1.2.1.25.2.3.1.3.2 "C:\ Label: Serial Number 74ebc3fb"

.1.3.6.1.2.1.25.2.3.1.3.3 "D:\ Label:SP2POEM_EN Serial Number 356563d9"

.1.3.6.1.2.1.25.2.3.1.3.4 "Virtual Memory"

OID/Calculation (SNMP Only)

MSP N-central services use Reverse Polish Notation (RPN) for all calculation formulae.

Metric Name

OID/Calculation

Description

Total Disk Size

(Total Disk Size x $hrStorageAllocationUnit) / 1024

The size of the disk.

 

 

Disk Space Used

(Disk Space Used x $hrStorageAllocationUnit) / 1024

The amount of space used on the disk.

 

Disk Free Space

[(Total Disk Size - Disk Space Used) x $hrStorageAllocationUnit] / 1024

The unoccupied space on the partition or disk.

Disk Usage (%)

(Disk Space Used / Total Disk Size) x 100

The percentage of space used on the disk.