Changing Segment Size

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Use this option to change the segment size on a selected logical drive. During this operation, I/O performance is affected but your data remains available.

Important:

Procedure

1

Select a logical drive in the Logical View; then, select either the Logical Drive >> Change Segment Size pull-down menu option, or Change Segment Size from the right-mouse pop-up menu.

Result: The sub-menu of segment sizes is displayed. The current segment size is marked with a black dot to its left. Any segment sizes that are not appropriate for the array RAID level are not available.

2

Select the desired segment size.

Result: The Change Segment Size Confirmation dialog box appears.

3

Select Yes.

Result: The segment size modification operation begins. The logical drive icon in the Logical View will show an Operation in Progress status while the operation is taking place.

Note: To view the progress or change the priority of the modification operation, select a logical drive in the array, then select Logical Drive >> Properties.

How Long Does a Change Segment Size Operation Take?

The operation is slower than other modification operations (for example, changing RAID levels or adding free capacity to an array) because of how the data is reorganized and because of the temporary internal backup procedures that occur during the operation.

How long a Change Segment Size operation can take depends on many variables, including the I/O load from the hosts, the modification priority of the logical drive, the number of drives in the array, the number of drive channels, and the processing power of the storage subsystem controllers.

If you want this operation to complete faster, you can change the modification priority, although this may decrease system I/O performance. To change the priority, select a logical drive in the array, then select Logical Drive >> Properties.

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Learn About Segment Size and Performance