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MS-SQL Used space in file
Purpose
- The disk space allocated to a data file is logically divided into pages and extents
- Being able to monitor database files used space evolution becomes then important to stablish a good database storage strategy.
Monitor features include :
- Monitoring of every SQL Server file type (Data - row -, Log …) and specific file name
- Able to alert if used space in a file (of any type) has reached a given threshold expressed in MB or percenatage
Configuration hints
Surveillance table:
- This is a table of rules that you can use to configure and customize the configuration.
- Each line of the table will define a rule of monitoring.
- You can combine multiple rules to cover different cases.
- Within a rule, you can configure the SQL Server file type you want to monitor, specific file name(s) using regular expressions, a used space in file threshold expressed in MB or percentage
File type
Select the specific SQL server file type you want to monitor , select “Any” to monitor used space in any kind of file, select “Aggregate if you need to monitor the total used space of all database files
File name:
You can set a file specific rule by setting its name in the File name filter field. Use * to match any file name, or use regular expressions.
Used space in file:
Use the multi-threshold syntax to set multiple threshold/severity associations: G2W:10 W2M:60 M2C:90 (Green To Warning, Warning To Major, etc…), expressed in MB or percentage An alarm of the corresponding severity will be sent if used sace in file is over threshold. Set 0 in the field if unused
Notice that values retrieved in MB will be rounded
Surveillance table
| Parameter | Description |
|---|---|
| Active | Use this field to activate or deactivate a line of configuration. |
| File type | Select the specific SQL Server type of file you want to monitor Select “Any” so to monitor every type of file Select “Aggregate” if you want to monitor the used space of all database files (aggregated) |
| File name | A filter to match only a specific SQL Server file name, you can use regular expression, white or black list |
| Used space in file | The threshold for the used space in file You can use the multi threshold syntax (i.e. : G2W:10 W2C:40) . Values can be expressed in MB or Percentage |
| Unit | Represents the used space in file unit of measure |
| Auto clear | If checked, the alarm will be cleared as soon as the alarm condition is not met anymore. |
| Alarm tag | This field allows to add custom text within the alarm message. %MSG% variable will contain the actual generated message and can be used such as: “my_prefix %MSG% my_suffix”. By default, tag will be used as prefix. |
| Alarm | If checked, this line of surveillance will be used for alarm generation. |
| Metric | If checked, this line of surveillance will be used for metric generation. |
| Report | If checked, this line of surveillance will used for showing threshold and severity in the daily report |
Examples
| Active | File type | File name | Used space in file | Unit | Auto clear | Alarm tag | Alarm | Metric | Report |
|---|---|---|---|---|---|---|---|---|---|
| true | Data | DBDATA | G2W:60 W2M:85 | Percentage | true | true | true | true |
Effect : For this rule, only Data - rows - type files will be monitored (File Type set to : “Data”).
All Data type files containing the string “DBDATA” on their file names will be taken into account. A WARNING alarm is sent if used space in file is 60% or more, a MAJOR alarm if 85% or more.
Generated metrics
| metricId | metricUnit | metricTarget | metricDescription |
|---|---|---|---|
| MSSQL_DATABASE_AGG_USED_SPACE_IN_FILE_MB | MB | AGGREGATE | The addition of all retrieved SQL Server files used spaces - aggregated - of a given database, expressed in MB |
| MSSQL_DATABASE_AGG_USED_SPACE_IN_FILE_PERCENT | Percentage | AGGREGATE | The addition of all retrieved SQL Server files used spaces - aggregated - of a given database, expressed in percentage |
| MSSQL_DATABASE_USED_SPACE_IN_FILE_MB | MB | [File type] - [File name] | Retrieved SQL Server file used space, expressed in MB |
| MSSQL_DATABASE_USED_SPACE_IN_FILE_PERCENT | Percentage | [File type] - [File name] | Retrieved SQL Server file used space, expressed in percentage |
/home/clients/8c48b436badcd3a0bdaaba8c59a54bf1/wiki-web/data/pages/products/promonitor/6.8/monitorsguide/mssql/ms-sqlusedspaceinfile.txt · Last modified: 2024/05/01 18:35 (external edit)
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