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Veritas Access Administrator's Guide

Last Published: 2021-04-15

Product(s): Appliances (Version Not Specified)

Platform: 3340

Configuring the policy of each tiered file system

To display the policy of each tiered file system

To display the policy of each tiered file system, enter the following:

Storage> tier policy list

For example:

Storage> tier policy list
FS      Create on  Days  MinAccess Temp  PERIOD
==      =========  ====  ==============  ======
fs1     primary					2         3             4

Each tiered file system can be assigned a policy. A policy that is assigned to a file system has three parts:

file creation	Specifies on which tier the new files are created.
inactive files	Indicates when a file has to be moved from the primary tier to the secondary tier. For example, if the days option of the tier is set to 10, and if a file has not been accessed for more than 10 days, then it is moved from the primary tier of the file system to the secondary tier.
access temperature	Measures the number of I/O requests to the file during the period as designated by the period. In other words, it is the number of read or write requests that are made to a file over a specified number of 24-hour periods, divided by the number of periods. If the access temperature of a file exceeds minacctemp (where the access temperature is calculated over a period of time previously specified) then this file is moved from the secondary tier to the primary tier.

To modify the policy of a tiered file system

To modify the policy of a tiered file system, enter the following:

Storage> tier policy modify fs_name {primary|secondary} days 
minacctemp period

fs_name	The name of the tiered file system from which you want to modify a policy.
tier	Causes the new files to be created on the primary or the secondary tier. You need to input either primary or secondary.
days	Number of days from which the inactive files move from the primary to the secondary tier.
minacctemp	The minimum access temperature value for moving files from the secondary to the primary tier.
period	The number of past days used for calculating the access temperature.

To display the prune policy of a tiered file system

To display the prune policy of a tiered file system, enter the following:
```
Storage> tier policy prune list
```
By default, the prune policy status of a tiered file system is disabled. The delete_after indicates the number of days after which the files can be deleted.

To modify the prune policy of a tiered file system

To modify the prune policy of a tiered file system, enter the following:
```
Storage> tier policy prune modify fs_name delete_after
```
fs_name
Name of the tiered file system from which you want to modify the prune policy.
delete_after
Number of days after which the inactive files are deleted.

To remove the prune policy of a tiered file system

To remove the prune policy of a tiered file system, enter the following:
```
Storage> tier policy prune remove fs_name
```
where fs_name is the name of the tiered file system from which you want to remove the prune policy.

To run the policy of a tiered file system

To run the policy of a tiered file system, enter the following:
```
Storage> tier policy run fs_name
```
where fs_name indicates the name of the tiered file system for which you want to run a policy.

To remove the policy of a tiered file system

To remove the policy of a tiered file system, enter the following:
```
Storage> tier policy remove fs_name
```
where fs_name indicates the name of the tiered file system from which you want to remove a policy.
You can run the policy of a tiered file system, which would be similar to scheduling a job to run your policies, except in this case running the policy is initiated manually. The Storage> tier policy run command moves the older files from the primary tier to the secondary tier, or prunes the inactive files on the secondary tier, according to the policy setting.