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Copying Data from an Array
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Three methods are available by which you can create a RAID-Copy array from a
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RAID-1 or RAID-10 array. Those methods are:
v Using the ssaraid command from the command line
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v Using SMIT
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v Using the ssa_make_copy command (the recommended method)
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Using the ssaraid Command to Create a RAID-Copy Array from a RAID-1 or
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RAID-10 Array
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This section describes how to use the ssaraid command to create RAID-copy arrays.
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This method and the SMIT menu method (see "Using SMIT to Create a RAID-Copy
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Array from a RAID-1 or RAID-10 Array" on page 155) are particularly suitable if you are
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not using Logical Volume Manager (LVM).
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Note: Data must be separately synchronized from system memory cache before the
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The procedure that is described here enables you to:
v Create a RAID-Copy array from available candidate disk drives
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v Couple the RAID-Copy array to your selected parent RAID-1 or RAID-10 array
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v Copy data from the parent array to the RAID-Copy array
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v Uncouple the RAID-Copy array from the parent array
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v Delete the RAID-Copy array when the copy data is no longer required
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The following examples show how you might create a RAID-Copy of a RAID-1 array.
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For these examples, the RAID-1 array is called hdisk5, and the RAID manager for
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hdisk5 is ssa2.
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Note: If you are not sure which adapter is the RAID manager for the hdisk that you
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For more information on the ssaraid command, see Chapter 12, "Using the SSA
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Command Line Interface for RAID Configurations" on page 235.
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1. List all the suitable disk drives that can be used to create a RAID-Copy array for the
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copy is uncoupled.
want to copy, give the command:
where
is the name of the hdisk that you want to copy.
selected array. Type:
A list of suitable candidate disk drives is displayed, for example:
Chapter 7. Copying Data from Arrays and from Volume Groups
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