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The following sections handle the different Storage Device entities:
- About the Storage Unit entity
- About the Symmetrix Unit entity
- About the Symmetrix Device entity
- About the Devices Sharing the Same Policy***
- About the Devices Sharing the Same Pool***
- About the Symmetrix Disk Director entity
- About the Symmetrix Front End Director entity
- About the Symmetrix Remote Director entity
- About the Clariion Unit entity
- About the Clariion Device entity
- About the Pools entity
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The Storage Unit entity displays a list of all storage entities connected to instances in the Tier. The Storage Unit entity can only be associated to from the Instance level.
About the Storage Unit entity Association area
You can view general details on the entities associated to the selected Storage Units in the Association area. This information is based on the mapping carried out by the Precise for SQL Server Storage agents that are installed.
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The Symmetrix Unit entity displays general details and I/O activity of the selected Symmetrix unit. The following views are available:■ Overview
- Overview
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- Performance
■ Performance
■ Load
■ Throughput
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- Load
- Throughput
About getting an overview of a Symmetrix unit
The Overview displays general details of the Symmetrix unit, number of I/O and hit ratios for the selected Symmetrix unit, over the selected time period, as collected by the Storage agent, as follows:
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- Properties. Displays general Symmetrix unit details such as, ID, model, and number of physical disks.
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- Requests. Displays number of I/O requests of the selected Symmetrix unit, over the selected time period, as collected by the Storage agent.
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- Hit Ratio. Displays the hit ratio of the selected Symmetrix unit, over the selected time period, as collected by the
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- Storage agent.
About viewing performance information for a Symmetrix unit
The Performance view displays requests counters vs. hit ratio counters of the selected Symmetrix unit broken down into read/writes, over the selected time period, as collected by the Storage agent, as follows:
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- Requests. Displays number of I/O requests of the selected Symmetrix unit, over the selected time period, as collected by the Storage agent.
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- Hit Ratio. Displays the hit ratio of the selected Symmetrix unit, over the selected time period, as collected by the
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- Storage agent.
About viewing the I/O load of a Symmetrix unit
The Load view displays I/O load of the selected Symmetrix unit, over the selected time period, broken down into read/written.
About viewing throughput information for a selected Symmetrix unit
The Throughput view displays I/O rate vs. Throughput (in MB) of the selected Symmetrix unit, over the selected time period.
About the Symmetrix Unit entity Association area
You can view general details and statistics counters on the entities associated to the selected Symmetrix Unit entity in the Association area. It is possible to associate to a Symmetrix Unit entity from a Symmetrix Storage Device entity. The following tabs show additional information:
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- Overview. Displays general details for the selected device.
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- Statistics. Displays I/O statistics for the selected device as collected by the Storage agent.
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The Symmetrix Device entity displays general details, I/O activity and I/O performance of the selected Symmetrix Storage device.
The following views are available:
- Overview
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- Hypers
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- Ports
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- Performance
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- Load
■ Ports
■ Performance
■ Load
■ Throughput
■ Scalability
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- Throughput
- Scalability
About viewing general details of a selected Symmetrix device
The Overview displays the following information on a Symmetrix device:
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- Properties. Displays general details of the Symmetrix device such as it's logical name and unit ID.
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- I/O
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- Wait. Displays the I/O wait data of the selected device, over the selected time period, as collected by the Storage agent.
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- Requests. Displays number of I/O requests of the selected device, over the selected time period, as collected by the
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- Storage agent.
- Hit
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- Ratio. Displays hit ratios of the selected device, over the selected time period, as collected by the Storage agent. Load Displays read/write load data for the selected device, over the selected time period, as collected by the
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- Storage agent.
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About viewing the list of all hypers included in a Symmetrix device
The Hypers view displays a list of all the Hypers included in the device.
About viewing a list of all the ports included in a device
The Ports view displays a list of all the device ports included in the device.
About viewing the performance of a Symmetrix device
The Performance view displays I/O requests vs. Hit Ratio of the selected device, over the selected time period, broken down into read/writes, as collected by the Storage agent.
About the View load data for a Symmetrix device
The Load view displays read/write data of the selected device, over the selected time period, as collected by the Storage agent.
About viewing throughput data for a Symmetrix device
The Throughput view displays I/O rate vs. Throughput (in MB) of the selected device, over the selected time period, as collected by the Storage agent.
About the scalability of a Symmetrix device
The Scalability view, in the Objects tab (only when choosing a specific device), shows the device’s response time in relation to the requests on that device.
About the Symmetrix Device entity Association area
You can view general details and statistics counters on the entities associated to the selected Symmetrix Device entity in the Association area. It is possible to associate to the Symmetrix Device entity from the Database, Table, Index, DB File, File Group, Symmetrix Unit, Symmetrix Device, Symmetrix Disk Director and Symmetrix Front End Director entities. It is possible to associate from the Symmetrix Device entity to the devices on the same Raid Group. The following tabs are available in the Association area:
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- Overview. Displays general details for the selected device.
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- Statistics. Displays I/O statistics for the selected device as collected by the Storage agent.
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This entity is only available, in the Objects tab, if you have installed Precise for Database & Storage. For more information on the supported platforms, see the Precise Installation Guide.
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This entity is only available, in the Objects tab, if you have installed Precise for Database & Storage. For more information on the supported platforms, see the Precise Installation Guide.
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The Symmetrix Disk Director entity displays general details and I/O activity of the selected device. The following views are available:
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