348 Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1
2. To map a volume, select it and click Next to map it to the host. The volume is assigned the 
next available SCSI ID if you leave System Assign selected. However, by selecting Self 
Assign, you can manually set SCSI IDs, as shown in Figure 8-30.
Figure 8-30   Modify Host Volume Mappings: Assign SCSI ID
If you select a SCSI ID that is in use for the host, you cannot proceed. As shown in 
Figure 8-29 on page 347, we selected SCSI ID 0. However, you can see in the right 
column SCSI ID 0 is allocated. By changing to SCSI ID 1, we can click Next.