LEFTHAND-NETWORKS-NSM-CLUSTERING-MIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › LEFTHAND-NETWORKS-NSM-CLUSTERING-MIB

Organization: Hewlett Packard Company, StorageWorks Division

Last Updated: 2010-06-23

Category: Domain: Storage, Technology: High Availability, Vendor: HP/HPE

Description: HP StorageWorks LeftHand Networks MIB for monitoring SAN/iQ cluster configuration and health for HP P4000 storage systems.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

What Is LEFTHAND-NETWORKS-NSM-CLUSTERING-MIB?

LEFTHAND-NETWORKS-NSM-CLUSTERING-MIB is an HP StorageWorks (originally LeftHand Networks) SNMP module for the SAN/iQ clustering software used on P4000 series network storage modules, exposing cluster configuration and health information. It covers management-group-level data (name, enabled state, quorum status, description, license time remaining), manager node counts (active vs total), and per-cluster and per-module inventory tables. This is squarely a hardware/software status monitoring MIB: it reveals whether a storage cluster has quorum (critical for SAN/iQ data availability), how many of its manager nodes are active versus configured, and how many storage modules and clusters exist in the management group, plus a remaining-license-time counter. It is vendor-specific to HP/LeftHand's SAN/iQ software stack and includes its own AGENT-CAPABILITIES/conformance objects, so it doesn't lean heavily on other MIBs beyond standard SNMPv2 conventions. It's deployed in HP P4000/LeftHand SAN environments where storage admins monitor cluster quorum and manager health to avoid storage outages. Engineers can download the LEFTHAND-NETWORKS-NSM-CLUSTERING-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in LEFTHAND-NETWORKS-NSM-CLUSTERING-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

  • HP StorageWorks P4000 SAN storage node (LeftHand Networks SAN/iQ)

Monitoring Examples

An admin would poll clusMgmtGroupQuorum and compare clusManagerTable's active vs. configured manager counts (clusMgmtGroupActiveManagerCount vs clusMgmtGroupManagerCount) to detect a cluster that has lost quorum due to manager nodes going offline. clusModuleTable and clusClusterTable let an admin enumerate all storage modules and clusters registered in the management group, while clusMgmtGroupLicenseTimeRemaining flags an approaching license expiration. A drop in clusMgmtGroupActiveManagerCount below the quorum threshold would be a critical alert indicating the SAN cluster is at risk of losing write availability.

What Can Be Monitored

  • cluster quorum status
  • active vs total manager node count
  • management group enabled state
  • license time remaining
  • storage module inventory/count
  • cluster inventory/count
Imported Objects

From HCNUM-TC

CounterBasedGauge64

From LEFTHAND-NETWORKS-GLOBAL-REG-MIB

lhnModulesOBJECT-IDENTITY
lhnNsmOBJECT-IDENTITY

From LEFTHAND-NETWORKS-NSM-MIB

lhnNsmClusteringOBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter64
Gauge32
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DateAndTime
DisplayString
RowStatus
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using clusModuleStatsStoreLatencyTotal OID:

Select an HP StorageWorks P4000 SAN storage node (LeftHand SAN/iQ clustering) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type clusModuleStatsStoreLatencyTotal into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The total time spent waiting for IO operations to complete on the storage module. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter64-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline (in ms), since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

Vendor-private MIB for LeftHand Networks NSM (Network Storage Management) clustering configuration and monitoring.

Start monitoring HP StorageWorks P4000 SAN storage node (LeftHand SAN/iQ clustering) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download LEFTHAND-NETWORKS-NSM-CLUSTERING-MIB