To perform a disk hot-plug procedure, you must know the physical or logical device name for the drive that you want to install or remove. If your system encounters disk errors, you can find messages about failing disks in the system console or in the /var/adm/messages files.
These error messages typically refer to a failed hard drive by its physical device name (for example, /devices/pci@1f,700000/scsi@2/sd@1/0) or by its logical device name (for example, c0t1d0). In addition, some applications may report a disk number (Disk0 through Disk3).
Use Disk Slot Numbers, Logical Device Names, and Physical Device Names to map internal disk slot numbers with the logical and physical device names for each hard drive.
Table 9 Disk Slot Numbers, Logical Device Names, and Physical Device Names