HP StorageWorks XP10000 Disk Array - Manual (Page 11)

Using Tiered Storage Manager 11
1 Using Tiered Storage Manager
This chapter explains the features of Tiered Storage Manager, describes the objects and timing associated with
migration (which is a main function of Tiered Storage manager), lists volume filter conditions, and documents
the procedure for refresh operations.
• Functions of Tiered Storage Manager (section 1-1 )
• Deciding When to Migrate Data (section 1-2 )
• How Migration Works (section 1-2-3 )
• Methods of Migration (section 1-4 )
• Required Components of Migration (section 1-5 )
• Users of Tiered Storage Manager (section 1-6 )
• Performing a Refresh Operation (section 1-7 )
• Volumes Used for Migration (section 1-8 )
1-1 Functions of Tiered Storage Manager
Tiered Storage Manager is designed to relocate (migrate) data from one volume on a storage subsystem to
another volume. You can migrate data simply by specifying the relocation destination. (Tiered Storage
Manager does not migrate data to a tape device.) See Figure 1-1 for an illustration of the scope of data you can
migrate using Tiered Storage Manager.
Using Tiered Storage Manager offers the following advantages:
• You can migrate data without interrupting the current application.
• You can migrate data without being aware of the storage configuration.
• You can migrate multiple volumes at once.
• You can reduce the preparation time for a migration.
• You can use multiple storage subsystems as though they were a single storage subsystem and centrally
manage different types of storage environments, since Tiered Storage Manager uses the StorageWorks
XP12000/10000.
• You can migrate data in line with the concept of Data Lifecycle Management (DLCM) so that data used
frequently is stored in high-performance storage and data used less frequently is stored in low-
performance storage. See Figure 1-2 for an illustration of migrating data according to DLCM.