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Active Directory Service

The Active Directory service monitors the performance of the Active Directory LDAP service.

Service Type


Instances on a Device


Supported Systems/Applications

Windows 2000, Windows 2003, and Windows 2008 Domain Controllers

Device Class

Server - Windows

Monitored By

Windows Agents

Scan Interval

15 minutes

Properties Queried and Calculations Performed

NameSpace root\cimv2
WMIClassName Win32_PerfRawData_NTDS_NTDS
Var.0.Property LDAPBindTime
Var.1.Property LDAPSuccessfulBindsPersec
Var.2.Property LDAPWritesPersec
Var.3.Property LDAPUDPoperationsPersec
Var.4.Property LDAPActiveThreads
Var.5.Property LDAPClientSessions
Var.6.Property DRAInboundObjectUpdatesRemaininginPacket
Var.7.Property DRAPendingReplicationSynchronizations

Status Details

Status Detail


Bind Time (ms)

Time (in milliseconds) taken for the last successful LDAP bind.

Successful Binds

Number of LDAP binds since last reboot.


The rate that LDAP clients perform write operations, per second.

UDP Operations

The number of UDP operations the LDAP server is processing.

Active Threads

The current number of threads in use by the LDAP subsystem of the local directory service.

Client Sessions

The number of connected LDAP client sessions.

Inbound Updates in Packet

The number of object updates received in the current directory replication updates packets that have not yet been applied to the local server. This counter tells you if the monitored server is receiving changes, and is taking too long to apply them to the database.

Pending Replication Syncs

The number of directory synchronizations that are in queue for this server. This counter identifies replication backlog - the larger the number, the larger the backlog.