Discovery data collected for storage via a host
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Summary of Discovery Data Collected for Storage via a Host
Discovery enables the gathering of critical information about storage units connected to Linux, Solaris, and Windows hosts through local I/O ports or Host Bus Adapters (HBAs). This functionality is vital for maintaining an accurate configuration management database (CMDB) and ensuring effective IT operations management.
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Key Features
- Probes Utilized: Discovery employs various probes to gather data about disks, disk partitions, Fibre Channel disks, iSCSI disks, NAS file systems, and storage pools across different operating systems.
- Storage References: Discovery maps key relationships between storage units and hosts, ensuring comprehensive tracking of storage configurations and dependencies.
- HBA Data Collection: Information is collected for HBAs on Linux, Solaris, and Windows servers, including fields like name, WWNN, model ID, and operational status.
Key Outcomes
By implementing Discovery, ServiceNow customers can expect:
- Enhanced visibility into storage configurations, improving management and troubleshooting capabilities.
- Accurate data representation in the CMDB, facilitating better decision-making and operational efficiency.
- Streamlined management of storage resources, leading to optimized performance and reduced downtime.
Discovery gathers information about storage units that connect to Linux, Solaris, and Windows hosts via a local I/O port or Host Bus Adapter (HBA).
Probes used to discover storage from a host
| Table | Probes |
|---|---|
| Disk [cmdb_ci_disk] |
|
| Disk Partition [cmdb_ci_disk_partition] |
|
| Fibre Channel Disk [cmdb_ci_fc_disk] |
|
| Fibre Channel Port [cmdb_ci_fc_port] |
|
| File System [cmdb_ci_file_system] |
|
| iSCSI Disk [cmdb_ci_iscsi_disk] |
|
| NAS File System [cmdb_ci_nas_file_system] |
|
| Storage HBA [cmdb_ci_storage_hba] |
|
| Storage Pool [cmdb_ci_storage_pool] | Linux - Storage |
| Storage Pool Member [cmdb_ci_storage_pool_member] | Linux - Storage |
| VMware vCenter Datastore [cmdb_ci_vcenter_datastore] | VMware - vCenter Datastores |
Storage references discovered
Discovery maps these references for storage units that connect to a host via a local I/O
port or Host Bus Adapter (HBA).
| Table and column | Reference | Target data element |
|---|---|---|
| cmdb_ci_storage_device.computer | refers to the | cmdb_ci_computer |
| cmdb_ci_storage_device.provided_by | refers to the | cmdb_ci_fc_port (for FC only) |
| cmdb_ci_disk_partition.disk | is a partition of | cmdb_ci_disk |
| cmdb_ci_storage_hba.computer | is the | cmdb_ci_computer |
| cmdb_ci_fc_port.controller | contains the | cmdb_ci_storage_hba |
| cmdb_ci_fc_port.computer | is the same | cmdb_ci_computer as cmdb_ci_storage_hba.computer |
| cmdb_ci_storage_volume.computer | is the | cmdb_ci_computer |
| cmdb_ci_storage_volume.provided_by | is the | cmdb_ci_storage_pool or cmdb_ci_storage_pool or cmdb_ci_storage_device (providing storage) |
| cmdb_ci_storage_pool.hosted_by | is the | cmdb_ci_computer |
| cmdb_ci_computer | the pool is on | cmdb_ci_storage_pool.container |
| cmdb_ci_storage_pool.container | is the | cmdb_ci_storage_pool or cmdb_ci_storage_pool_member containing the pool (if the pool is present) |
| cmdb_ci_storage_pool_member.pool | is the | cmdb_ci_storage_pool |
| cmdb_ci_storge_pool_member.storage | is the | cmdb_ci_storage_pool, cmdb_ci_disk_partition or cmdb_ci_storage_device providing storage |
Data collected for HBAs on Linux and ESX servers
Discovery collects information on host bus adapters (HBA) for fiber channel enabled devices
connected to Linux and ESX servers.
| Label | Table | Field name | Source |
|---|---|---|---|
| Name | Storage HBA [cmdb_ci_storage_hba] | name |
|
| WWNN | Storage HBA [cmdb_ci_storage_hba] | wwnn |
|
| Model ID | Storage HBA [cmdb_ci_storage_hba] | model_id |
|
| Computer | Storage HBA [cmdb_ci_storage_hba] | computer |
|
| Label | Table | Field name | Source |
|---|---|---|---|
| WWPN | Fibre Channel Port [cmdb_ci_fc_port] | wwpn | VMWare - vCenter ESX Hosts Storage
|
| WWNN | Fibre Channel Port [cmdb_ci_fc_port] | wwnn |
|
| Port type | Fibre Channel Port [cmdb_ci_fc_port] | port_type |
|
| Speed | Fibre Channel Port [cmdb_ci_fc_port] | speed |
|
| Controller | Fibre Channel Port [cmdb_ci_fc_port] | controller |
|
| Computer | Fibre Channel Port [cmdb_ci_fc_port] | computer |
|
| Label | Table | Field name | Source |
|---|---|---|---|
| FC Disk | Fibre Channel Targets [cmdb_fc_target] | fc_disk |
|
| Created by | Fibre Channel Targets [cmdb_fc_target] | sys_created_by |
|
| Created | Fibre Channel Targets [cmdb_fc_target] | sys_created_on |
|
| SysID | Fibre Channel Targets [cmdb_fc_target] | sys_id |
|
| Updates | Fibre Channel Targets [cmdb_fc_target] | sys_mod_count |
|
| Updated by | Fibre Channel Targets [cmdb_fc_target] | sys_updated_by |
|
| Updated | Fibre Channel Targets [cmdb_fc_target] | sys_updated_on |
|
| WWNN | Fibre Channel Targets [cmdb_fc_target] | wwnn |
|
| WWPN | Fibre Channel Targets [cmdb_fc_target] | wwpn |
|
Data collected for HBAs on Solaris servers
Discovery on Solaris supports HBAs manufactured by:
- Emulex
- QLogic
Discovery populates these fields in the Storage HBA [cmdb_ci_storage_hba] table, using the
Solaris - Storage probe and sensor.
| Label | Field name |
|---|---|
| Name | name |
| Computer | computer |
| Device ID | device_id |
| Manufacturer | manufacturer |
| Model ID | model_id |
| Serial number | serial_number |
Discovery populates these fields in the Fibre Channel Port [cmdb_ci_fc_port] table.
| Label | Field name |
|---|---|
| Name | name |
| Computer | computer |
| Controller | controller |
| WWPN | wwpn |
| WWNN | wwnn |
| Port type | port_type |
| Speed | speed |
| Operational status | operational_status |
Discovery populates these fields in the Fibre Channel Disk [cmdb_ci_fc_disk] table.
| Label | Name |
|---|---|
| Name | name |
| Storage type | storage_type |
| Device interface | device_interface |
| Device LUN | device_lun |
Discovery populates these fields in the Fibre Channel Targets [cmdb_fc_target] table.
| Label | Name |
|---|---|
| FC Disk | fc_disk |
| WWNN | wwnn |
| WWPN | wwpn |
Data collected for HBAs on Windows servers
Discovery on Windows supports HBAs on any operating system.
| Label | Table | Field Name | Source |
|---|---|---|---|
| Name | Storage HBA [cmdb_ci_storage_hba] | name |
|
| WWNN | Storage HBA [cmdb_ci_storage_hba] | wwnn |
|
| Model ID | Storage HBA [cmdb_ci_storage_hba] | model_id |
|
| Computer | Storage HBA [cmdb_ci_storage_hba] | computer |
|
| Label | Table | Field Name | Source |
|---|---|---|---|
| WWPN | Fibre Channel Port [cmdb_ci_fc_port] | wwpn |
|
| WWNN | Fibre Channel Port [cmdb_ci_fc_port] | wwnn |
|
| Port type | Fibre Channel Port [cmdb_ci_fc_port] | port_type |
|
| Speed | Fibre Channel Port [cmdb_ci_fc_port] | speed |
|
| Controller | Fibre Channel Port [cmdb_ci_fc_port] | controller |
|
| Computer | Fibre Channel Port [cmdb_ci_fc_port] | computer |
|