User`s guide

1–Introduction
Feature Details
1-2 ISR654606-00 A
 Data security and sanity: HP StorageWorks mpx Manager provides
features to classify a storage array as “source only,” making it impossible to
write data to that array and thus minimizing the chances of data corruption. It
also provides a Verify Migration Job wizard to compare data on the source
LUN with that on the destination LUN to indicate that the data copy occurred
without any data loss or corruption.
 Migration job scheduling: Data migration may be disruptive to
business-critical applications; therefore, minimizing application downtime is
very important. DMS provides several job scheduling options, including the
Configure Only option, which allows you to complete the time-consuming
task of configuring data migration jobs without requiring any downtime. The
different I/O size capabilities for migration jobs enables you to tune the
storage array’s performance during sequential read/write operations. The
Load Balancing option is also very useful when dealing with
older-generation, lower-speed arrays (such as 2Gb and 4Gb Fibre Channel)
being migrated to higher speed (4Gb and 8Gb Fibre Channel) arrays using
higher-speed (4Gb and 8Gb) Fibre Channel switches.
 Data migration service logs: DMS logs are maintained separately from the
system logs. DMS logs are designed to help the service professional
maintain a full, detailed history of each job performed, and can be submitted
as a part of the migration report to the customer.
 Logging and troubleshooting: System logs are designed to store a
significant number of details that can be used for debugging and
troubleshooting. The save capture command (see “save capture” on
page 5-57) helps to capture the configuration details, system logs, and
MPX200 state at any time, and can be used for troubleshooting if the need
arises.
 Licensing: DMS licenses provide capacity- (per TB) and array-based
licenses. For more information, see 4 Data Migration Licenses.
Feature Details
This section describes the features of the Data Migration Service. Because the
current DMS is an offline-only service, it is assumed that when a data migration
job for the specified LUN starts, applications (Microsoft
®
Exchange, Oracle
®
Applications, and other applications that are using the source LUNs for data
storage) and server access to the LUN is blocked. You do not need to bring down
these applications during the initial setup and configuration of DMS. DMS
minimizes the downtime by allowing the complete setup and configuration of data
migration jobs (except for immediate scheduling of the jobs) without bringing down
the other applications. The application and server must be offline only during the
actual data migration.