Feature Details; Job Scheduling; Immediate Schedule; Delayed Schedule - HP StorageWorks MPX200 Solution Manual

• Licensing: DMS licenses provide capacity (per TB) and array-based licenses. For more information,
see Chapter

Feature details

This section describes the offline and online features of the data migration service.
Offline data migration. DMS as an offline service allows you to migrate data between both Fibre
Channel and iSCSI storage arrays. Offline service assumes that when a data migration job for the
specified LUN starts, access to the LUN is blocked for servers and applications (Microsoft Exchange,
Oracle Applications, and other applications that are using the source LUNs for data storage). 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.
Online data migration. DMS as an online service allows you to migrate data only between Fibre
Channel storage arrays. Online service assumes that when a data migration job for the specified
LUN starts, access to the LUN is continued for servers and applications (Microsoft Exchange, Oracle
Applications, and other applications that are using the source LUNs for data storage). You do not
need to stop or pause these applications or the server during the initial setup, configuration, and
migration of data. The application and server may be online during the actual data migration.

Job scheduling

HP StorageWorks mpx Manager provides multiple data migration job scheduling options to optimize
bandwidth and provide maximum usage of SAN resources. It provides a priority-based serial scheduling
feature that enables you to line up migration jobs and execute them in serial or parallel fashion, based
on available resources.
You can schedule data migration jobs for execution in the following ways:
• Immediate Schedule (start now)
• Delayed Schedule (start at a later time within the next 30 days)
• Serial Schedule (priority-based scheduling)
• Configure Only (manually start later)

Immediate schedule

Use the Immediate Schedule option to schedule a data migration job to instantly start data migration.
You must ensure that both the source and destination LUNs are not being accessed by any application
when this option is selected.

Delayed schedule

Use the Delayed Schedule option to schedule a data migration job to start at a later time. When you
select this option during configuration of a migration job, you are requested to enter the start time.
This allows you to configure a migration job during normal business hours and perform actual data
migration during off peak hours, so that the application remains down only for a short period of time
and during the off peak hours.
12 Introduction
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