This screen allows you to specify the various parameters for an individual logical drive.
In the previous Wizard screen, you selected an existing array for the logical drive or you created a new array on which to place the logical drive. The maximum free capacity on the array you chose or created is shown in the Maximum logical drive capacity allowed label on this screen. Decide how much of the maximum free capacity on that array to use for the logical drive.
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Use the spinner box to indicate the capacity of the new individual logical drive and the list to indicate the specific capacity units to use (MB, GB, or TB). The maximum value, shown by default, is the maximum logical drive capacity allowed.
Note:
- You can type up to three decimal places for the capacity.
- If you enter a capacity that is less than the maximum, leave enough remaining capacity to create one or more additional logical drives that meet your application needs.
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Specify the logical drive name.
Choose a unique, meaningful name that helps you identify the logical drive. A meaningful name describes the data that will be stored on the logical drive.
Note:
- There is a 30 character limit.
- If you choose a logical drive name that duplicates that of another logical drive, an error message is displayed and you are prompted to choose another name.
- Any leading and trailing spaces in the name are deleted.
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Specify whether you want to use recommended settings or customize advanced logical drive parameters.
When you specify expected I/O characteristics, the corresponding default cache read ahead multiplier and segment size values that are typically well suited for those I/O patterns are populated in the Cache read ahead multiplier and Segment size areas.
If you choose Use recommended settings, the default settings are:
- Logical Drive I/O characteristics: File System (typical); Cache Read Ahead Multiplier (1); Segment Size (128KB)
- Preferred controller ownership: The default controller owner is determined by the controllers in a controller pair so that logical drive I/O loads can be appropriately balanced between them.
- Logical Drive-to-LUN mapping: If the Storage Partitioning feature is not enabled, the default setting is Automatic and the logical drive will be automatically assigned a Logical Unit Number (LUN) and is accessible by any hosts connected to the storage subsystem. If Storage Partitioning is enabled, the default setting is Map Later with Storage Partitioning and the logical drive will not be assigned a LUN and will not be accessible by any hosts until you go to the Mappings View and assign a specific host and LUN to this logical drive.
If you choose Customize settings, the following options can be changed:
- Logical Drive I/O characteristics:
- File system (typical): Cache read ahead multiplier (1); Segment size(128KB)
- Database: Cache read ahead multiple (0); Segment size (128KB)
- Multimedia: Cache read ahead multiple (8); Segment size (256KB)
- Custom: Select your own cache read ahead multiplier and segment size
- Preferred controller ownership: The default controller owner is determined by the controllers in a controller pair so that logical drive I/O loads can be appropriately balanced between them.
- Logical Drive-to-LUN mapping: If the Storage Partitioning feature is not enabled, the default setting is Automatic and the logical drive will be automatically assigned a Logical Unit Number (LUN) and be accessible by any hosts connected to the storage subsystem. If the Storage Partitioning feature is enabled, the default setting is Map Later with Storage Partitioning and the logical drive will not be assigned a LUN and will not be accessible by any hosts until you go to the Mappings View and assign a specific host and LUN to this logical drive.
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4
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If you selected ...
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Then...
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Use recommended settings
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Select Finish and go to step 5.
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Customize settings
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Select Next and customize settings on the next Wizard screen.
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If the logical drive is created successfully, a success message is displayed and the logical drive is created with the specified RAID level, capacity and other default parameters. If there is remaining free or unconfigured capacity on the storage subsystem, you have the option to create another logical drive.
If you select...
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Then...
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Yes
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Select where you want to create the logical drive (on the same array where you placed the last logical drive, or on a different array), then press Yes.
Result: The Create Logical Drive Wizard restarts.
- If you chose to create the logical drive on the same array, the Specify Logical Drive Parameters screen is displayed. Specify the capacity, name, and other parameters for the new logical drive.
- If you chose a different array, the Introduction screen is displayed. Select either a Free Capacity or Unconfigured Capacity node on which to place the new logical drive, and then follow the remaining Wizard screen to specify capacity, name, ad other parameters for the new logical drive.
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No
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You are finished with this procedure. Perform any operating system modifications necessary on the application host so that the applications can use the logical drive. For more information, refer to your storage management software installation guide.
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