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Dell NetWorker 19.9 Administration Guide

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Library task inactivity periods

Library resources include attributes that are used by older, slower libraries that specify the number of seconds a library is inactive after certain operations (such as loading, unloading, or ejecting a volume). For example, once a tape is loaded, the library must read and, possibly, reposition the tape before the next operation can begin. This period of delay is known as sleeping.

While sleeping, the library cannot receive or perform other operations. Without the sleep period, the loading or unloading of volumes might fail.

The NetWorker software automatically configures default sleep periods. Change these values only when troubleshooting a library’s performance, or if a NetWorker technical support specialist requests it. Typically, the higher the sleep values specified in the attributes, the longer it takes the library to perform the task. Be cautious when changing these values.

The sleep attributes and their default values are shown in this table.

Table 1. Library resource sleep attributes
Attribute Description Default value
Load Sleep Number of seconds that the NetWorker software waits for a library to complete loading a cartridge. 15 seconds
Unload Sleep Number of seconds that the NetWorker software waits for a library to complete unloading a cartridge. 60 seconds
Eject Sleep Number of seconds that the NetWorker software waits for an eject operation to complete. 60 seconds
Deposit Timeout Number of seconds for a library to wait for a tape to be deposited in the mail slot before it times out. 15 seconds
Withdraw Timeout Number of seconds for a library to wait for a tape to be withdrawn from the mail slot before it times out. 15 seconds
Cleaning Delay Number of seconds that the NetWorker software waits between the completion of a drive cleaning operation and the ejection of the cleaning cartridge from the drive. 60 seconds
Idle Device Timeout The number of minutes NetWorker allows a device with a volume to be idle before automatically unmounting it. For specific devices, this value can be overridden. Unmounting volumes automatically (idle device timeout) provides more information. 10 minutes
Port Polling Period Number of seconds for a library to wait before polling a mail slot to check for the updated status. 3 seconds

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