SIEMENS-DUPLEXWRITE-MIB

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Category: RAID and Storage Management, Siemens Enterprise

Description: Manages Siemens duplex write storage mirror configuration and write synchronization status.

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What Is SIEMENS-DUPLEXWRITE-MIB?

SIEMENS-DUPLEXWRITE-MIB is a Siemens vendor MIB (registered under the sni/sniProductMibs OID branch) for managing 'Duplex Write' storage-mirroring functionality, which keeps a synchronized duplicate copy of data across paired storage devices or cluster nodes. It exposes agent identification data (company, version, build), operational status of the duplex-write mirror, cluster partner identity, and a per-device table tracking individual mirrored devices. Its central monitoring value is software/service status: administrators check sieDWCurrentStatus to see whether mirroring is healthy or degraded, confirm the cluster partner relationship, and track the timestamp of the last status change, effectively monitoring the health of a data-replication/high-availability service rather than physical sensors. It depends on the broader Siemens sni product MIB hierarchy (sniProductMibs/sniExtensions) for its OID placement and on standard SNMPv2-SMI conventions for its agent table. It is deployed in Siemens server or storage clustering environments where continuous data mirroring between paired nodes must be verified for high-availability guarantees. Network engineers evaluating or troubleshooting this functionality can download the SIEMENS-DUPLEXWRITE-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in SIEMENS-DUPLEXWRITE-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

Siemens server/storage cluster node

Monitoring Examples

An administrator would poll sieDWCurrentStatus alongside sieDWClusterPartner to confirm that duplex write mirroring is actively synchronizing with the expected partner node, and check sieDWLastDate to see when the mirror state last changed. Walking the sieDWDeviceTable (indexed by sieDWDeviceID) reveals the set of individual devices under duplex-write protection, letting the admin spot any device that has silently dropped out of the mirrored set. sieDWAgentVersion and sieDWAgentBuild are useful to confirm the duplex-write agent software is at the expected patch level before troubleshooting a reported mirroring fault.

What Can Be Monitored

duplex write mirror current status
cluster partner identity
per-device mirror table (device ID, status)
duplex-write agent version/build
last status change timestamp

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter
Gauge
TimeTicks
enterprises

From RFC1213-MIB

DisplayString
mib-2

OIDs

OID symbolic	OID numeric	Type	Access	Description
sni	1.3.6.1.4.1.231
sniProductMibs	1.3.6.1.4.1.231.2
sniExtensions	1.3.6.1.4.1.231.2.10
sniServerMgmt	1.3.6.1.4.1.231.2.10.2
NTF sieDWNewConfig	1.3.6.1.4.1.231.2.10.2.0.1300			Trap occurs after the driver has created a new DuplexWrite group or has added a device to an existing DuplexWrite group as requested by the configuration utility.
NTF sieDWPieceRemoved	1.3.6.1.4.1.231.2.10.2.0.1301			Trap occurs after the driver has removed a device from a DuplexWrite group. The action was requested by the configuration utility.
NTF sieDWConfigRemoved	1.3.6.1.4.1.231.2.10.2.0.1302			Trap occurs after the driver has removed a DuplexWrite group. The action was requested by the configuration utility.
NTF sieDWStatusSet	1.3.6.1.4.1.231.2.10.2.0.1303			Trap occurs after the driver has set the status of a DuplexWrite group. The action was requested by the configuration utility.
NTF sieDWUpdateStatus	1.3.6.1.4.1.231.2.10.2.0.1304			Trap occurs after the driver has updated the status of a DuplexWrite group.
NTF sieDWPieceRecovered	1.3.6.1.4.1.231.2.10.2.0.1305			Trap occurs after the driver has sucessfully recovered a DuplexWrite group as requested by the configuration utility. Both pieces are ONLINE.
NTF sieDWRecoverAborted	1.3.6.1.4.1.231.2.10.2.0.1306			Trap occurs after the driver has aborted the recovery process of a DuplexWrite group as requested by the configuration utility.
NTF sieDWReservationConflict	1.3.6.1.4.1.231.2.10.2.0.1307			Trap occurs after the driver has detected a reservation conflict. A whole DuplexWrite group is not accessible from now on. This is only an error if it happens during operation (not initialization) of this group.
NTF sieDWConfigChanged	1.3.6.1.4.1.231.2.10.2.0.1308			Trap occurs after the driver has done a rescan/reread and found a new configuration.
NTF sieDWConfigInvalidated	1.3.6.1.4.1.231.2.10.2.0.1309			Trap occurs after the driver has invalidated the configuration information for a device as requested by the DuplexWrite cluster service. The configuration information is reread before the next access of the device on this cluster element.
NTF sieDWActiveLunChanged	1.3.6.1.4.1.231.2.10.2.0.1310			Trap occurs after the driver has changed the path for read commands to a specified device of a DuplexWrite group.
NTF sieDWPieceFailed	1.3.6.1.4.1.231.2.10.2.0.1311			Trap occurs after the driver has detected an error on one of the devices of a DuplexWrite group.
NTF sieDWRootFlagChanged	1.3.6.1.4.1.231.2.10.2.0.1312			Trap occurs after the driver has changed the root behavior of a DuplexWrite group.
NTF sieDWNameChanged	1.3.6.1.4.1.231.2.10.2.0.1313			Trap occurs after the driver has changed the name of a DuplexWrite group.
NTF sieDWForceActive	1.3.6.1.4.1.231.2.10.2.0.1314			Trap occurs after the driver has marked a disk of a DuplexWrite group forced active at next boot. The partner disk can be used for a snapshot.
NTF sieDWRefreshFinished	1.3.6.1.4.1.231.2.10.2.0.1350			Trap occurs after the driver interface has updated the internal data structures.
NTF sieDWDiskRegistered	1.3.6.1.4.1.231.2.10.2.0.1351			Trap occurs after the driver interface has modified the registry so that after the next reboot a disk is registered/unregistered.
sniCommon	1.3.6.1.4.1.231.2.10.2.2
sieDuplexWrite	1.3.6.1.4.1.231.2.10.2.2.8
sieDWAgentInfo	1.3.6.1.4.1.231.2.10.2.2.8.1
STR sieDWAgentId	1.3.6.1.4.1.231.2.10.2.2.8.1.1	DisplayString	read-only	DuplexWrite SNMP agent ID string
STR sieDWAgentCompany	1.3.6.1.4.1.231.2.10.2.2.8.1.2	DisplayString	read-only	DuplexWrite SNMP agent company string
STR sieDWAgentVersion	1.3.6.1.4.1.231.2.10.2.2.8.1.3	DisplayString	read-only	DuplexWrite SNMP agent version string
STR sieDWAgentBuild	1.3.6.1.4.1.231.2.10.2.2.8.1.4	DisplayString	read-only	DuplexWrite SNMP agent build date and time string
sieDWStatus	1.3.6.1.4.1.231.2.10.2.2.8.2
INT sieDWLastDate	1.3.6.1.4.1.231.2.10.2.2.8.2.1	INTEGER	read-only	Date of last recent reconfiguration in time_t (seconds since 1/1/1970 00:00:00)
INT sieDWCurrentStatus	1.3.6.1.4.1.231.2.10.2.2.8.2.2	INTEGER	read-only	This reflects the overall status of the driver, agent and the underlying ports. Possible values are: OK everything is fine DEGRADED there was an event from the driver marking a change of DuplexWrite configuration or port status ERROR software exception (software bug) FAILED communication with driver fails (bug, driver not installed)
INT sieDWRefresh	1.3.6.1.4.1.231.2.10.2.2.8.2.3	INTEGER	read-write	Command to refresh the data the agent is maintaining
STR sieDWClusterPartner	1.3.6.1.4.1.231.2.10.2.2.8.2.4	DisplayString	read-only	If node is in a cluster this is the partner node
sieDWContainer	1.3.6.1.4.1.231.2.10.2.2.8.3
sieDWDeviceTable	1.3.6.1.4.1.231.2.10.2.2.8.3.1		not-accessible	Table of all devices DuplexWrite can detect
sieDWDevice	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1		not-accessible	Entry in table of DuplexWrite devices
INT sieDWDeviceID	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.1	INTEGER	read-only	A unique value for each device, starts at 0 and remains unchanged from one re-initialization of the agent to the next
INT sieDWDevicePort	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.2	INTEGER	read-only	The SCSI port number where this device is attached
INT sieDWActiveDevicePort	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.3	INTEGER	read-only	The SCSI port number where this device is attached, when MultiPath is installed this is the active port
INT sieDWPassiveDevicePort1	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.4	INTEGER	read-only	When MultiPath is installed this is the SCSI port number of the first passive port where this device is attached
INT sieDWPassiveDevicePort2	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.5	INTEGER	read-only	When MultiPath is installed this is the SCSI port number of the second passive port where this device is attached
INT sieDWPassiveDevicePort3	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.6	INTEGER	read-only	When MultiPath is installed this is the SCSI port number of the third passive port where this device is attached
INT sieDWDevicePath	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.7	INTEGER	read-only	The SCSI path number (should be bus number) where this device is attached
INT sieDWDeviceTarget	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.8	INTEGER	read-only	The SCSI target ID of this device
INT sieDWDeviceLun	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.9	INTEGER	read-only	The SCSI lun of this device
INT sieDWDeviceDisk	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.10	INTEGER	read-only	The operating system's internal number for this device; e.g. NT: disk 2
INT sieDWDeviceSizelo	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.11	INTEGER	read-only	Size of the device in blocks (low part)
INT sieDWDeviceSizehi	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.12	INTEGER	read-only	Size of the device in blocks (high part)
INT sieDWDeviceSizeMBlo	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.13	INTEGER	read-only	Size of the device in MB (low part)
INT sieDWDeviceSizeMBhi	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.14	INTEGER	read-only	Size of the device in MB (high part)
STR sieDWDeviceInquiryString	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.15	DisplayString	read-only	The SCSI inquiry string of this device
STR sieDWDeviceDriverName	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.16	DisplayString	read-only	The name of the operating system's driver that handles the device
INT sieDWDuplexStatus	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.17	INTEGER	read-write	The status of the DW group where this device is part of: online: the device is in perfect order (GET/SET) error: the device had a fault (GET/SET) recover: the device is working on a catch-up (GET) disable: stop operation of this device (GET/SET) simplex: simple SCSI device (GET) na: not available as DuplexDisk piece (GET) preferred: piece used for read (GET) multipath: disk not accessible (MultiPath) (GET) cluster: disk on other cluster node (GET) missing: one disk of the DW group is missing (GET) The highest 8 bit of the value are used for additional status information: Bit field: Bit 0 - most recent Bit 1 - root Bit 2 - force active Bit 3 - hotspare Bit 4 - broken Bit 5 - reserved ... Bit 7 - reserved
INT sieDWDuplexReason	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.18	INTEGER	read-only	The reason for an error of the DW group where this device is part of
INT sieDWDuplexNumber	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.19	INTEGER	read-only	The DW internal number of the DW group where this device is part of
INT sieDWDuplexPiece	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.20	INTEGER	read-only	The internal number this device has inside its DW group
INT sieDWDuplexSizelo	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.21	INTEGER	read-only	The size of the DW group in blocks where this device is part of (low part)
INT sieDWDuplexSizehi	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.22	INTEGER	read-only	The size of the DW group in blocks where this device is part of (high part)
INT sieDWDuplexSizeMBlo	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.23	INTEGER	read-only	The size of the DW group in MB where this device is part of (low part)
INT sieDWDuplexSizeMBhi	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.24	INTEGER	read-only	The size of the DW group in MB where this device is part of (high part)
INT sieDWDuplexRecoverProgress	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.25	INTEGER	read-only	The progress in percent of a recovery of the DW group where this device is part of
INT sieDWDuplexCreate	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.26	INTEGER	read-write	Command to create a DW group with this device
INT sieDWDuplexAdd	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.27	INTEGER	read-write	Command to add device to the DW group with this device
INT sieDWDuplexCopy	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.28	INTEGER	read-write	Command to recover (catchup) device inside its DW group
INT sieDWDuplexDelete	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.29	INTEGER	read-write	Command to delete this device from its DW group - if it's the last device of its group the group is destroyed
INT sieDWDuplexBehavior	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.30	INTEGER	read-write	Command to include/exclude this device from being used by DW; Command to set this device as preferred device in this DW for reading
STR sieDWDuplexName	1.3.6.1.4.1.231.2.10.2.2.8.3.1.1.31	DisplayString	read-write	The DW internal name of the DW group where this device is part of
sieDWTrapInfo	1.3.6.1.4.1.231.2.10.2.2.8.10
STR sieDWTrapServerName	1.3.6.1.4.1.231.2.10.2.2.8.10.1	DisplayString	not-accessible	Name of the server where the trap occured
INT sieDWTrapTime	1.3.6.1.4.1.231.2.10.2.2.8.10.2	INTEGER	not-accessible	Time the trap occured (in seconds since 1/1/1970 00:00:00)
INT sieDWTrapGroupID	1.3.6.1.4.1.231.2.10.2.2.8.10.3	INTEGER	not-accessible	The DuplexWrite Group ID where the change occured
INT sieDWTrapPortID	1.3.6.1.4.1.231.2.10.2.2.8.10.4	INTEGER	not-accessible	The DuplexWrite Port ID where the change occured
INT sieDWTrapPathID	1.3.6.1.4.1.231.2.10.2.2.8.10.5	INTEGER	not-accessible	The DuplexWrite Path ID where the change occured
INT sieDWTrapTargetID	1.3.6.1.4.1.231.2.10.2.2.8.10.6	INTEGER	not-accessible	The DuplexWrite Target ID where the change occured
INT sieDWTrapLunID	1.3.6.1.4.1.231.2.10.2.2.8.10.7	INTEGER	not-accessible	The DuplexWrite Lun ID where the change occured
INT sieDWTrapError	1.3.6.1.4.1.231.2.10.2.2.8.10.8	INTEGER	not-accessible	The DuplexWrite error code for certain traps

RFC description

A Siemens vendor-specific MIB for managing duplex write functionality in Siemens industrial automation devices. This private MIB extends standard SNMP management capabilities to support Siemens-specific protocols and configurations.

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Download SIEMENS-DUPLEXWRITE-MIB

What Is SIEMENS-DUPLEXWRITE-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description