Maximizing Efficiency Through Data Replication Manager Data Movement Application Notes

Procedures and Examples
24 Application Notes - Maximizing Efficiency Through Data Replication Manager Data Movement
SET UnitNumber PREFERRED_PATH=THIS_CONTROLLER
Example: set d10 preferred_path=this_controller
SET UnitNumber MAXIMUM_CACHED_TRANSFER_SIZE=Number
Example: set d10 maximum_cached_transfer_size=128
SHOW UnitNumber
Example: show d10
Example Display 12 shows a sample output from the SHOW command.
Example Display 12
LUN Uses Used by
------------------------------------------------------------------------------
D10 DISK10000
LUN ID: 6000-1FE1-0008-D4E0-0001-8290-1711-0692
NOIDENTIFIER
Switches:
RUN NOWRITE_PROTECT READ_CACHE
READAHEAD_CACHE WRITEBACK_CACHE
MAX_READ_CACHED_TRANSFER_SIZE = 128
MAX_WRITE_CACHED_TRANSFER_SIZE = 128
Access:
BUILDNGA, BUILDNGB, BUILDNGC, BUILDNGD
State:
ONLINE to this controller
Not reserved
PREFERRED_PATH = THIS_CONTROLLER
Size: 17769177 blocks
Geometry (C/H/S): ( 5258 / 20 / 169 )
The re-created LUN at the target site now becomes the initiator site of a remote copy set that points to
a third controller pair as its target.
NOTE: The following step assumes that the third site has a LUN prepared to be the target to the BUILDNGB
subsystem. It can be any type of LUN, but must be the same size or larger. To denote a second target site, the
symbols TT are used.
TT 7. From the third site (BUILDNGC), use the following commands to rename the LUN:
INITIALIZE ContainerName
Example: initialize disk10000
ADD UNIT UnitNumber ContainerName DISABLE_ACCESS_PATH=ALL
Example: add unit d10 disk10000 disable_access_path=all
SET UnitNumber ENABLE_ACCESS_PATH=HostIDs
Example: set d10 enable_access_path=BUILDNGBa,BUILDNGBb,BUILDNGBc,BUILDNGBd
SET UnitNumber PREFERRED_PATH=THIS_CONTROLLER
Example: set d10 preferred_path=this_controller
SET UnitNumber MAXIMUM_CACHED_TRANSFER_SIZE=Number
Example: set d10 maximum_cached_transfer_size=128