| 摘要 |
Methods and structure for migrating a logical volume with a Serial Attached SCSI (SAS) expander are provided. The expander comprises a plurality of physical links with associated transceivers (PHYs). The expander further comprises a control unit operable to select a logical volume, and to initiate migration of data from the selected logical volume to a backup logical volume. Further, the expander includes a Serial SCSI Protocol (SSP) target of the expander operable to intercept commands directed to the selected logical volume responsive to the control unit initiating the migration, and an SSP initiator of the expander that is operable to generate commands directed to the backup logical volume based on the intercepted commands, and to provide the intercepted commands to the selected logical volume. |
