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STA Reference Guide, v1.0.2
E28382-03
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Managing Library SNMP Connections : When to Perform Manual Data Collections

When to Perform Manual Data Collections

This section describes times when manual data collections are required or recommended. See “Perform a Manual Data Collection” for detailed instructions.

Required Times

You must perform a manual data collection at the following times, in order for STA to be able to receive data from a library.

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When a new library connection is configured. This will build the initial STA library configuration model.
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After modifying existing SNMP connection settings so that the settings now specify a different library (see “Change SNMP Connection Details for a Monitored Library”  for details).
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Whenever SNMP settings are modified on a library, such as SNMP users or trap recipients are added, changed, or deleted. See “Configuring the Libraries for STA” in the STA Configuration Guide for details on these types of changes.

Recommended Times

It is recommended that you perform a manual data collection at the following times, in order for STA to be notified as soon as possible of changes in the library environment.

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When a large number of media cartridges are entered or ejected from a library, such as through an SL3000 access expansion module (AEM). STA initiates a triggered data collection as soon as the library notifies it of any enters and ejects, but notifications of large-scale changes may take some time to complete.
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When a drive is added, removed, or swapped. This is especially important for drive swaps, where a drive is installed in a slot that previously had a different drive. There may be a lag between the time when the old drive is removed, the new drive is installed, and the library notifies STA of the changes. During this time, any exchanges that use the new drive could result in co-mingling of data between the new and old drives. Initiate the data collection according to the following guidelines:
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For an added or swapped drive, wait 15 minutes after the drive has initialized.
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For a removed drive, wait about one minute after the removal.
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When a Redundant Electronics switch occurs, or the library active storage regions or partitions are modified. Although STA initiates a triggered data collection as soon as the library notifies it of these types of changes, it is recommended that you initiate a manual data collection because these modifications can have a significant impact on the STA library configuration model. Initiate the data collection according to the following guidelines:
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For changes to the library active storage regions or partitions, wait 15 minutes after the library controller database has been updated.
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For a Redundant Electronics switch, wait 15 minutes after the newly active card has fully initialized.
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Anytime you suspect library configuration data is out of sync on STA.
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