IBM System Storage DS3000, Programming Manual

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Notes
A host is a computer that is attached to the storage subsystem and accesses the logical drives on the
storage subsystem through the host ports. You can define specific mappings to an individual host. You
also can assign the host to a host group that shares access to one or more logical drives.
A host group is an optional topological element that you can define if you want to designate a collection
of hosts that share access to the same logical drives. The host group is a logical entity. Define a host
group only if you have two or more hosts that share access to the same logical drives.
Create Consistency Group Enhanced FlashCopy Image
This command creates a new Enhanced FlashCopy image for each base logical drive that is a member of
an Enhanced FlashCopy consistency group.
Syntax
create cgEnhancedFlashCopyImage consistencyGroup="consistencyGroupName"
Parameters
Parameter Description
consistencyGroup
The name of the consistency group for which you are
creating Enhanced FlashCopy images. Enclose the
consistency group name in double quotation marks (" ").
Notes
You can use any combination of alphanumeric characters, hyphens, and underscores for the names.
Names can have a maximum of 30 characters.
The command causes all pending I/O operations to each base logical drive that is a member of the
consistency group to be drained and suspended before creating the Enhanced FlashCopy images. If the
creation of all of the Enhanced FlashCopy images cannot be completed successfully for all of the
consistency group members, the operation fails and new Enhanced FlashCopy images are not created.
Normally, all members of an Enhanced FlashCopy consistency group will have the same number of
Enhanced FlashCopy images. When you add a new member to an Enhanced FlashCopy consistency
group, that new member lacks the Enhanced FlashCopy images that were previously created on the
established members of the Enhanced FlashCopy consistency group. This is not an error condition.
Requests for deletion or rollback of Enhanced FlashCopy images that exist on only a subset of the
Enhanced FlashCopy consistency group members affects only those members for which the specified
Enhanced FlashCopy image actually exists.
Create Consistency Group Enhanced FlashCopy Logical Drive
This command creates an Enhanced FlashCopy logical drive of specific images in the base logical drives
in a consistency group. You can select one base logical drive or more than one base logical drives from
the consistency group to include in the Enhanced FlashCopy logical drive. When you create an Enhanced
FlashCopy logical drive of a consistency group you are creating a logical drive with contents that you can
view.
Chapter 3. Script Commands
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