Veritas Access Administrator's Guide

To set the deduplication schedule

1. To set the deduplication schedule, enter the following:

   Storage> dedup schedule set fs_name
   				hours
   				day [freq]

   The Storage> dedup schedule set command can only be set as a local parameter.

   Two categories of schedules are allowed: run periodicity and type periodicity. The granularity of the schedule is limited to the time of day and the day of the month.

   fs_name	Specify the file system where you want to set the deduplication schedule.
   hours	Specify the hours value for setting the duplication schedule. There are three types of values for the hours field: * - indicates every hour. */N - indicates every Nth hour, where N is in the range [1-12]. You can also specify 5 comma-separated hours in the range of [0-23].
   day	Specify the interval in days for setting the deduplication schedule. There are three types of values for the day field: * - indicates every day. */N - indicates every Nth day, where N is in the range of [1-15]. Any number in the range of [1-7] where: 1 - Sunday 2 - Monday 3 - Tuesday 4 - Wednesday 5 - Thursday 6 - Friday 7 - Saturday The deduplication scheduler will only pick up the schedule if the schedule is enabled for deduplication.
   freq	Specify the frequency to run the deduplication schedule in the range of [1-5]. The default frequency is [1]. This value controls deduplication load on the file system by distributing phases of deduplication across various runs, and potentially across systems in the cluster. A value of 4 means, every 4th run deduplicates the file system, whereas the other runs consolidate the changes.

2. When you set a deduplication schedule, keep in mind the following:

   • If the hour value for a schedule is set as */N, then the deduplication scheduler picks up the schedule every Nth hour starting from 00:00 and ending at 23:00. The hour schedule resets at end of day.

     For example, if the hour value is */5, then the schedule time will be 00:00, 05:00, 10:00, 15:00, and 20:00 hours. On the next day, the schedule repeats at the same times.

   • If day value for a schedule is set as */N, then the deduplication scheduler picks up the schedule every Nth day starting from the 1st day of the month and ending with the last day of the month. The day schedule resets at end of each month.

     For example, if the day value is */5, then the schedule day is on the 1st, 6th, 11th, 16th, 21st, 26th, and 31st days for a 31-day month. For the next month, the schedule repeats on the same days.

   • For both the hour and day schedule, the * and */1 values are interchangeable. They indicate every hour and every day.

To modify the deduplication schedule

• To modify the deduplication schedule, enter the following:

  Storage> dedup schedule modify fs_name
  				hours
  				day
  				freq

  fs_name	Specify the file system where you want to modify the deduplication schedule.
  hours	Specify the hours value for modifying the deduplication schedule. There are three types of values for the hours field: * - indicates every hour. */N - indicates every Nth hour, where N is in the range [1-12]. You can also specify 5 comma-separated hours in the range of [0-23].
  day	Specify the interval in days for modifying the deduplication schedule. There are three types of values for the day field: * - indicates every day. */N - indicates every Nth hour, where N is in the range [1-15]. Any number in the range of [1-7] where: 1 - Sunday 2 - Monday 3 - Tuesday 4 - Wednesday 5 - Thursday 6 - Friday 7 - Saturday Note: The deduplication scheduler will only pick up the schedule if the schedule is enabled for deduplication.
  freq	Specify the frequency to run the deduplication schedule in the range of [1-5].

To delete the deduplication schedule

• To delete the deduplication schedule, enter the following:

  Storage> dedup schedule delete fs_name

  where fs_name is the name of the file system that you want to delete.