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Installation and User's Guide

Installation and User's Guide

Installation and User's Guide

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Supported ClientsThis option is valid for the Windows 32-bit clients only. The Tivoli StorageManager client API does not support this option. The server can also define thisoption.Options FilePlace this option in the client options file (dsm.opt). You can set this option on theImage-Snapshot tab of the Preferences editor.Syntax►► SNAPSHOTFSIDLEWait maximum wait timeminimum wait time►◄Parametersmaximum wait timeSpecifies the maximum amount of time that must pass during which there isno write activity on a volume before a snapshot can be taken. You can specifyms (milliseconds) or s (seconds) qualifiers with the value. If you do not specifya qualifier, the value you specify is interpreted as seconds. The range of valuesis zero through 999; the default value is 2 s. A value of zero (0) indicates thatthe snapshot occurs immediately without waiting for a period of inactivity. Youcan specify a maximum wait time value without specifying a minimum wait timevalue.minimum wait timeSpecifies the minimum amount of time that must pass during which there isno write activity on a volume before a snapshot can be taken. You can specifyms (milliseconds) or s (seconds) qualifiers with the value. If you do not specifya qualifier, the value you specify is interpreted as seconds. The range of valuesis zero through 999; the default value is 50 ms.If you set snapshotfsidlewait to 6,1 <strong>and</strong> snapshotfsidleretries to 5, Tivoli StorageManager waits for i/o inactivity for 5 seconds, then retries 5, 4, 3, 2, <strong>and</strong> finally 1.The maximum value, minimum value, <strong>and</strong> the value of snapshotfsidleretries areused to determine the value to decrease by on each retry. This allows the longerwait times to be attempted first but still allows snapshots to occur if the activity istoo high. If snapshotfsidleretries is set to zero (0), no retries are attempted, even ifa minimum value is specified.If you specify both maximum <strong>and</strong> minimum wait times, the following rules apply:Note:1. You must specify the maximum wait time.2. If you do not specify a minimum wait time, the maximum wait time is used untilthe value of snapshotfsidleretries is met.3. The maximum wait time must be greater than or equal to the minimum wait timeor you receive an invalid option error.4. The maximum wait time qualifier can be different than the minimum wait timequalifier. For example, SNAPSHOTFSIDLEWait 4s,500ms is valid.5. You can use either a comma or a space to separate the maximum wait time <strong>and</strong>minimum wait time.472 IBM Tivoli Storage Manager for Windows Backup-Archive Clients: <strong>Installation</strong> <strong>and</strong> <strong>User's</strong> <strong>Guide</strong>

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