User`s guide

1–Introduction
Feature Details
ISR654606-00 A 1-5
DMS classifies the discovered storage array controllers into two categories:
targets and arrays. All array controller ports are initially identified as targets by the
MPX200. After a single data LUN is detected on the target, DMS forms an entity
called an array. A specific LUN seen through multiple Fibre Channel target ports
are grouped under a single array.
Configure the array entity created by the DMS for the following attributes:
 Symbolic name: Upon forming an array, the HP StorageWorks MPX200
Multifunction Router automatically assigns a symbolic name to an array.
QLogic highly recommends that the you assign a more meaningful name to
an array because the migration logs identify the source and destination
LUNs with the symbolic names of the source and destination arrays.
 Array type: DMS requires the classification of each array as either Source,
Destination, or Source+Destination. During the creation of migration jobs,
the Data Migration wizard restricts the assignment of a source LUN only
from arrays that have an attribute Source and assignment of a destination
LUN only from the arrays with attribute Destination. Use the array attribute
Source+Destination only when you need to create copies of a LUN on the
same array.
Select the array type attribute None to exclude the storage array from
participating in data migration. The MPX200 simultaneously supports both
iSCSI connectivity and data migration service. Typically, you would use the
“None” attribute when the MPX200 is used to provide only iSCSI
connectivity for that storage array.
 Array bandwidth: This feature is applied only to a source array. This value
indicates the maximum bandwidth available from the array for a data
migration task. The bandwidth is computed over all paths. The MPX200
uses only the user-assigned array bandwidth to migrate the data. This
allows other applications and servers using the same source array to
continue to perform at an acceptable performance level.
 Load Balancing: The MPX200 detects all available multiple active and
passive paths to the LUN. Load balancing balances the load for migration
jobs over multiple active paths, thus improving the migration rate. Load
balancing should be disabled only in case of trouble performing data
migration.