Table 9 Task Status descriptions (continued)

Status

Description

 

 

Rejected

This task has been rejected by this server.

 

 

Using Discovery Groups

The discovery groups feature is sometimes called segmented replication because it allows you to run Discovery Data Collection for a segment of elements. Because The HP Storage Essentials product runs more slowly when Discovery Data Collection is in progress, it is helpful to break the process into segments which can then be run at night or on multiple days. For example, if Discovery Data Collection for all elements takes twelve hours, you could break the elements into several small groups and schedule Discovery Data Collection to run at night on multiple days.

NOTE: For more about data collection, see ”About Discovery Data Collection” on page 67.

When planning discovery groups, consider the following requirements and capabilities:

•By default, HP Storage Essentials is configured with a default discovery group plus four additional groups.

•Discovery groups affect the amount of memory needed for HP Storage Essentials. Before configuring discovery groups, check the support matrix for your edition and verify that your system meets the memory requirements for using discovery groups.

•Do not move elements between discovery groups when Discovery Data Collection is running. If you do this, an error will occur when Discovery Data Collection tries to locate elements that were moved.

•An element can be a member of only one discovery group at a time.

•Elements discovered through SMI-S and hosts discovered with CIM extensions from Build 5.1 and later of HP Storage Essentials cannot be added to discovery groups. These elements can, however, be placed independently into scheduled Discovery Data Collection tasks without

being part of a discovery group. This allows you greater flexibility when gathering discovery data. For more information, see ”Creating Custom Discovery Lists” on page 76.

•When an element in a discovery group is updated, its dependent elements are also updated.

•Each discovery group communicates over a specific port. The defaults ports are:

Table 10 Discovery Group Ports

Default

5986

 

 

Discovery Group 1

5984

 

 

Discovery Group 2

5982

 

 

Discovery Group 3

5980

 

 

Discovery Group 4

5978

 

 

76 Discovering Switches, Storage Systems, NAS Devices, and Tape Libraries