NetVault Backup writes the data transfer statistics for Data Domain Systems to the stats.stnz file. The nvstatsmngr process uses this file and requires that it is regularly updated. However, frequent updates can have a significant performance impact on the system.
By default, NetVault Backup updates the stats.stnz file after every 5 seconds or 10 blocks of data transfer. You can change this default setting from the Change Settings page.
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In the Navigation pane, click Change Settings. |
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Under Services, click Media Manager. In the Media Manager dialog box, under Foreign RAS Device Configuration, configure the following settings: |
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Transfer Update Frequency (Blocks): By default, NetVault Backup updates the stats.stnz file after every 10 blocks of data transfer. To change the default setting, type or select a new value. |
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Transfer Update Frequency (Seconds): By default, NetVault Backup updates the stats.stnz file after every 5 seconds. To change the default interval, type or select a new value. The time interval is specified in number of seconds. |
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Click Apply to apply the new settings and close the dialog box. |
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In the Navigation pane, click Change Settings. |
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Under Services, click Media Manager. In the Media Manager dialog box, under DAV RAS Device Configuration, configure the following settings: |
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Data transfer stall timeout: This setting determines the amount of time NetVault Backup waits for a “stream end” response from a NetVault Backup SmartDisk before reporting a stall. The default value is 1800 seconds. To change the default setting, type or select the new value. The stall timeout interval is specified in number of seconds. |
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Click Apply to apply the new settings and close the dialog box. |
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In the Navigation pane, click Change Settings. |
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Under Services, click Media Manager. In the Media Manager dialog box, under Media Request Weightings, configure the following settings. |
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Click Apply to apply the new settings and close the dialog box. |
You can change the default interval for backup retirement scans in the mediamgr.cfg file.
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Open the mediamgr.cfg file in a text editor. You can find this file in the config directory under the NetVault Backup installation directory. |
NOTE: If you set this value to 0 (zero), the savesets are retired according to the time specified in the Advanced Options set or the Change Expiry dialog box. |
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