Maximizing Efficiency Through Data Replication Manager Data Movement Application Notes
Procedures and Examples
Application Notes - Maximizing Efficiency Through Data Replication Manager Data Movement 45
Example
In this example, assume that both subsystems are running ACS 8.xP and that the connections have
been named. The first two commands are issued to show the initial conditions.
I 1. Issue this command to show all units configured to the initiator controller:
SHOW UNITS
Example Display 44 shows a sample output of this command.
Example Display 44
LUN Uses Used by
------------------------------------------------------------------------------
D1 DISK10000
I 2. Show the initial conditions of the LUN with data to be moved. Use the command:
SHOW UnitNumber
Example: show d1
Example Display 45 shows a sample output of this command.
Example Display 45
LUN Uses Used by
------------------------------------------------------------------------------
D1 DISK10000
LUN ID: 6000-1FE1-0000-1530-0009-9231-4229-009A
NOIDENTIFIER
Switches:
RUN NOWRITE_PROTECT READ_CACHE
READAHEAD_CACHE WRITEBACK_CACHE
MAX_READ_CACHED_TRANSFER_SIZE = 32
MAX_WRITE_CACHED_TRANSFER_SIZE = 32
Access:
HOSTA
State:
ONLINE to the other controller
NOPREFERRED_PATH
Size: 17769177 blocks
Geometry (C/H/S): ( 5258 / 20 / 169 )
I 3. Enable access to the other storage subsystem (in this example it is the target site, or BUILDNGB).
Refer to callout 1 in Figure 13. Use the command:
SET UnitNumber ENABLE_ACCESS_PATH=HostIDs
Example: set d1 enable_access_path=BUILDNGBa,BUILDNGBb,BUILDNGBc,BUILDNGBd
Example Display 46 shows a sample warning message that appears.
Example Display 46
Warning 1000: Other host(s) in addition to the one(s) specified can still
access this unit. If you wish to enable ONLY the host(s)
specified, disable all access paths (DISABLE_ACCESS=ALL), then
again enable the ones specified