Supported features for host discovery options

Article:HOWTO36654  |  Created: 2010-12-08  |  Updated: 2011-01-06  |  Article URL http://www.symantec.com/docs/HOWTO36654
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Supported features for host discovery options

CommandCentral provides several ways to discover hosts and their associations to storage resources and network devices.

See How you can discover hosts in CommandCentral.

Table: Use cases for discovery options at the storage array, NAS, and SAN switch level identifies the use cases that each host discovery option provides at the storage array, network-attached storage (NAS), and storage area network (SAN) switch level.

Table: Use cases for discovery options at the storage array, NAS, and SAN switch level

Use case

User-created host

Agentless host

Unified Agent

Standard Agent

Discovery and inventory reporting

X

X

X

X

Change tracking, best practices, and health and performance monitoring

X

X

X

X

Capacity planning and utilization reporting (array and switch port level only)

X

X

X

X

Table: Use cases for discovery options at the host level identifies the use cases that each host discovery option provides at the host level.

Table: Use cases for discovery options at the host level

Use case

User-created host

Agentless host

Unified Agent

Standard Agent

Storage allocation and chargeback reporting

(by allocated storage, file system, or volume manager capacity)

X*

*By allocated storage capacity only

X

X

X

End-to-end visibility

X*

*Only from the HBA downwards

X*

*Only from the file system downwards

X *

* Storage Foundation hosts only

X

Health monitoring

(at the multipathing, file system, volume manager, database, and application levels)

X*

*HBA ports only

X*

*HBA ports only

X

Performance monitoring

X*

*HBA ports only

X*

*HBA ports only

X

Capacity planning and utilization reporting

(at the file system, volume manager, database, and application levels)

X*

*Allocation level only

X*

*Not available for databases and applications

X

X

Reclamation reporting

X

X

X

Storage path and configuration management

(includes path connectivity, redundancy, array RAID type, multipathing, and volume manager configuration)

X*

*Includes path connectivity, redundancy, and array RAID type

X

X

X

CommandCentral includes the ability to discover virtualization servers (VMware ESX servers and Solaris global zones). You can choose from different discovery options to discover virtualization servers; however, the information that CommandCentral discovers is the same:

  • For VMware ESX servers, the Management Server and Control Host can perform remote discovery by using VMware Infrastructure SDK (VI SDK).

  • For global zones, you can install the Standard Agent on the global zone or you can configure agentless discovery of the global zone. (Agentless discovery provides the same level of discovery as the Standard Agent as long as you use an account with the required privileges.) Discovering a global zone initiates discovery of all non-global zones.

You can also discover VMware guest operating systems. The information that CommandCentral discovers depends on the discovery option that you choose. Table: Use cases for discovery options at the VMware GOS level identifies the use cases that each host discovery option provides at the VMware guest operating system level.

Table: Use cases for discovery options at the VMware GOS level

Use case

VMware Tools ¹

Agentless host

Unified Agent

Standard Agent

Volume manager utilization

X

X

X

File system utilization

X *

* Windows only

X

X

X

Application utilization

X

X

¹ When you configure CommandCentral to discover an ESX server, the VMware explorer can also discover information about guest operating systems if you install VMware Tools.

The previous tables provide a high-level comparison of the host discovery options. The following tables identify the objects that CommandCentral can discover and report on with each host discovery option.

Table: Discovery of storage resources by host discovery option compares the storage resources that CommandCentral can discover with each host discovery option.

Table: Discovery of storage resources by host discovery option

Discovery area

User-created host

Agentless host

Unified Agent

Standard Agent

Host

X*

*Host name and IP address only

X

X

X

HBA

X*

*WWN, connectivity, and number of ports only

X

X

X

Storage allocation and connectivity

X

X

X

X

LUNs and multipathing

X

X

X

Volume managers and file systems

X

X

X

Databases and applications

X

X

Table: Reporting capabilities by host discovery option compares the reports that CommandCentral Storage can generate with each host discovery option.

Table: Reporting capabilities by host discovery option

Report category

User-created host

Agentless host

Unified Agent

Standard Agent

Storage reports

X ¹

X ²

X

X

Reclamation reports

X ¹

X ²

X

X

Resource reports

X ¹

X ²

X

X

Performance reports

X ¹

X ²

X

X

History reports

X

¹ Some data is not available for reports in this category. Data is available for the discovery areas that are listed in Table: Discovery of storage resources by host discovery option.

² Some data is not available for reports in this category.

See How agentless discovery affects CommandCentral Storage reports.


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