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Sun StorEdge Configuration Service enables you to expand the capacity
of an existing logical drive or logical volume. For example, you might
originally have had a 72-Gbyte drive of which only 36 Gbyte was selected
to build a logical drive. To use the remaining 36 Gbyte, you need to
expand the logical drive. NOTE: To expand the logical volume, you must first expand the logical drives that make up the logical volume.
The capacity shown in the Maximum Available Drive Free Capacity field is the
maximum available free disk space per physical drive, based on the smallest
physical drive in the logical drive. The capacity you specify is added to each
physical drive in the logical drive.
As described in the following examples, the total amount of capacity that is added to
the logical drive is calculated automatically based on the RAID level.
NOTE: Spare drives are not included when expanding a logical drive. Do not include
spare drives when calculating maximum drive expand capacity.
If you know the total maximum drive capacity by which you want to expand a logical drive,
perform the following calculations based on the RAID level to determine the amount
to enter in the Maximum Drive Expand Capacity field:
NOTE: The Maximum Drive Expand Capacity cannot exceed the Maximum Available
Drive Free Capacity.
Online expansion enables you to use the logical drive before expansion is complete.
However, because the controller is building the logical drive while performing
I/O operations, expanding a logical drive online requires more time than offline
expansion.
If you do not select OnLine Expansion, you can use the drive only after
expansion is complete. Because the controller is building the logical drive
without having to also perform I/O operations, offline expansion requires less
time than online expansion.
The Logical Drive/Logical Volume Number For important information regarding the logical drive/logical volume number
displayed in the LD/LV field in the Dynamically Grow and/or
Reconfigure LDs/LVs window, see The
Logical Drive/Logical Volume Number. |