Supported features for host discovery options
InfoScale Operations Manager provides several ways to discover hosts and their associations to storage resources and network devices.
Table: Use cases for discovery options at the host level identifies the use cases that each host discovery option provides.
Related information
Table: Use cases for discovery options at the host level
| Category | Use case | Agentless host | Agent Host |
|---|---|---|---|
| Inventory and environment reporting | Inventory report for various resources at License and product usage reporting | X* | X |
| host, enclosure, and cluster level | * Does not include InfoScale Storage Foundation disk groups, volumes, file systems, clusters, and databases. Includes only VMware servers and virtual machines | ||
| Storage utilization | Storage allocation at host level | - | X |
| Storage utilization | File system usage | X* | X |
| *Does not include InfoScale Storage Foundation File Systems | |||
| Storage utilization | Resource mapping from disks on hosts to LUNs in an enclosure | X | X |
| Storage utilization | Thin pool usage | X | X |
| Storage utilization | Enclosure storage allocation to hosts | X | X |
| Cluster analysis | Cluster activity and trends | - | X |
| Storage reclamation | Reporting underutilized file systems | X* | X |
| *Does not include InfoScale Storage Foundation File Systems | |||
| Storage reclamation | LUNs connected to multiple hosts | X | X |
| Storage reclamation | Underutilized LUNs under InfoScale Storage Foundation | - | X |
| Storage reclamation | LUNs that are not part of a disk group | - | X |
InfoScale Operations Manager includes the ability to discover virtualization servers (VMware ESX servers). You can choose from different discovery options to discover virtualization servers. For VMware ESX servers, Management Server and Control Host can perform remote discovery by using VMware Infrastructure (VI SDK). To discover ESX servers, the Control Host Add-on must be installed.
Note: Agentless discovery of non-global zones, LDOMs, and VMware ESX servers is not supported. Agentless discovery of any virtual machines other than VMware guests is not supported. Agentless discovery of a non-global zone or LDOM virtual machine will result in the discovery of a physical host without any storage correlation. Agentless discovery of global zones is supported, however resources allocated from global to non-global zones on the hosts will not be discovered.
InfoScale Operations Manager has the ability to discover VMware guest operating systems. The information that InfoScale Operations Manager discovers depends on the discovery option that you choose. To discover information from VMware environments, you must configure the ESX server or VirtualCenter discovery, and also configure the guests using agent or agentless discovery.
If you discover the VMware guests using agentless discovery, any RDM disks visible on the guest will not be correlated to array LUNs. Similar to non-RDM disks visible to the guest, the RDM disks will be correlated to the storage exported by the corresponding ESX server. If you configure VMware guests using an agent then you can see the correlation of RDM disks visible to the guest with corresponding array LUNs.
Note: For configuring Linux VMware guests using agentless discovery, the version of the/usr/sbin/dmidecodeutility must be 2.7 or higher.
The following tables identify the objects that InfoScale Operations Manager can discover and report on with each host discovery option.
Table: Discovery of storage resources by host discovery option compares the storage resources that InfoScale Operations Manager can discover with each host discovery option.
Table: Discovery of storage resources by host discovery option
| Discovery area | Agentless host | Agent Host |
|---|---|---|
| Host | X | X |
| HBA | X* | X |
| * Does not support iSCSCI initiators discovery | ||
| Storage allocation and connectivity | X | X |
| LUNs and multipathing | X* | X |
| * Does not support InfoScale DMP. Does not support iSCSI LUN correlation to enclosures | ||
| Volume managers and file systems | X* | X |
| * Does not support InfoScale Storage Foundation Volume Manager and File Systems | ||
| Databases | - | X |
| Clusters | - | X |