Compaq HSZ80 manual Device Switches, Transportability, 48Creating Storagesets

3–48Creating 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.