The Automated Storage Tiering configuration file has the following parameter related to Automated Storage Tiering. By changing the value of the parameter, you can customize the behavior of Automated Storage Tiering.
Parameter Name | Explanation |
|---|---|
MAXMEMORY | The maximum value of the memory capacity that is to be used by Automated Storage Tiering. |
File Name and Stored Location
The name of the Automated Storage Tiering configuration file is "ast.properties". This file is stored in the following directory.
OS Type of | Absolute Path Name |
|---|---|
Windows | $INS_DIR\AST\Manager\etc\opt\FJSVssast\data\properties\ast.properties |
Solaris, | /etc/opt/FJSVssast/data/properties/ast.properties |
How to Define the Parameter
As the default value, 2,560 is set. Specify the maximum memory capacity (in megabytes) that is used by Automated Storage Tiering with an integer value of 2,560 or larger as required.
The relationship between the maximum memory capacity used by Automated Storage Tiering and the upper limit value of the Tier pool usage capacity that can be evaluated at the same time is as follows.
Total Value of the Tier Pool Usage Capacity That Can Be Evaluated with the Access Status Data at the Same Time | Maximum Memory Size Used by Automated Storage Tiering |
|---|---|
2 PB or less | 2,560 MB |
More than 2 PB and 3 PB or less | 3,180 MB |
More than 3 PB and 4 PB or less | 3,800 MB |
More than 4 PB and 5 PB or less | 4,420 MB |
More than 5 PB and 6 PB or less | 5,040 MB |
If an invalid value is specified, it is regarded the same as if 2,560 is specified. As a result, the total usage of the Tier pools for which access status data can be evaluated in the same period of time amounts to 2 PB.
Example
The following is an example of expanding the total value of the Tier pool usage capacity that can be evaluated at the same time up to 3 PB.
MAXMEMORY=3180
How to Reflect the Configuration File
The procedure to reflect the contents of the Automated Storage Tiering configuration file to this product is as follows:
In the Web Console, open Overview of Automated Storage Tiering that is related to the storage system where the Tier pool exists for performing Automated Storage Tiering and check that "Reallocating" and "Waiting" are not displayed in Status column.
Execute the following command to stop ETERNUS SF Manager.
For Windows
> $INS_DIR\Common\bin\Stop_ESFservice.bat
$INS_DIR is "Program Directory" specified at the ETERNUS SF Manager installation.
For Solaris or Linux
# /opt/FJSVesfcm/bin/stopesf.sh
Edit the Automated Storage Tiering configuration file "ast.properties".
Execute the following command to restart ETERNUS SF Manager.
For Windows
> $INS_DIR\Common\bin\Start_ESFservice.bat
$INS_DIR is "Program Directory" specified at the ETERNUS SF Manager installation.
For Solaris or Linux
# /opt/FJSVesfcm/bin/startesf.sh
