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The configuration software first recognizes the disk drive by its machine-readable serial
number. The serial number of the disk drive is also displayed by the service aids. The
service aids show the number as the last eight digits of the IEEE SSA Unique ID.
Service actions are always related to physical disk drives. For this reason, errors that
occur on SSA disk drives are always logged against the physical disk drive (pdisk).
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If a disk drive that has been formatted on a machine of a particular type (for example, a
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personal computer) is later installed into a using system that is of a different type (for
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example, a large host system), that disk drive is configured only as a pdisk during the
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configuration of the using system.
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User's Guide and Maintenance Information
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