Specifications

Figure 70 on page 165 shows the volumes (only 5 out of 10 are shown here
because of the limit of the Disk Administrator window). In this example, the volumes
are labeled using their logical drive letter and volume identifier (3 characters in
length).
Table 26 shows the relationship between the volumes and their mapping.
Table 26. Volume mapping before migration
Volume ID
SCSI port on
the ESS
SCSI target ID and
LUN
Disk
Administrator
logical drive
assignment
Disk
Administrator disk
number
251 A 6,0 E 1
252 A 6,1 F 2
253 A 6,2 G 3
254 A 6,3 H 4
255 A 6,4 I 5
00D B 6,0 J 6
00E B 6,1 K 7
00F B 6,2 L 8
010 B 6,3 M 9
011 B 6,4 N 10
Perform the following steps to map the disks:
1. Shutdown any databases or applications that use the disks that you are
migrating.
2. Unassign the volumes from the SCSI host.
a. Go the ESS Specialist.
b. Click Storage Allocation.
c. Click Open System Storage.
d. Click Modify Volume Assignments.
e. Select the volumes from the list.
f. From the Action menu, select Unassign selected volume(s).
g. Click Perform Configuration Update. Click OK.
3. Assign the volumes to the fibre-channel host.
a. Click Modify Volume Assignments.
b. Select the volumes from the list.
c. From the Action menu, select Assign selected volume(s) to target host.
d. Select the fibre-channel host adapter to which you want to assign the
volumes.
e. Click Perform Configuration Update.
f. Restart the host system for the changes to take effect.
g. Open the SAN Gateway Explorer to view the mapped disks.
Concurrent migration
This section describes the process of migrating disks or volumes using a concurrent
method. Before you migrate, ensure that you meet the following prerequisites:
166 ESS Host Systems Attachment Guide