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3–48 Creating Storagesets
Device Switches
When you add a disk drive or other storage device to your subsystem, you can enable
the following switches:
■ Transportability (only disk drives)
■ Device transfer rate
■ Local/Remote (only disk drives)
Transportability
Indicate whether a disk drive is transportable when you add it to your subsystem:
■ NOTRANSPORTABLE disk drives (default) are marked with StorageWorks-
exclusive metadata. This metadata supports the error-detection and recovery
methods that the controller uses to ensure data availability. Disk drives that
contain this metadata cannot be used in non-StorageWorks subsystems.
Consider these points when using the NOTRANSPORTABLE switch:
❏ When you bring nontransportable devices from another subsystem to your
controller subsystem, add the device to your configuration using the ADD com-
mand. Do not initialize the device, or you will reset and destroy any forced error
information contained on the device.
❏ When you add units, the controller software verifies that the disks or storag-
esets within the units contain metadata that matches the configuration. If there is
no match or metadata is not present, the controller displays a message; initialize
the disk or storageset before adding it.
■ TRANSPORTABLE disk drives can be used in non-StorageWorks subsystems.
Transportable disk drives can be used as single-disk units in StorageWorks
subsystems as well as disk drives in other systems. They cannot be combined into
storagesets in a StorageWorks subsystem.
TRANSPORTABLE is especially useful for moving a disk drive from a worksta-
tion into your StorageWorks subsystem. When you add a disk drive as transport-
able, you can configure it as a single-disk unit and access the data that was
previously saved on it.