HP StorageWorks XP Performance Advisor Software v4.6 User and Troubleshooting Guide (T1789-96094, June 2010)

16 Launching XP Performance Advisor from
XP Tiered Storage Manager Software
Introduction
The XP Tiered Storage Manager Software (TSM) is used to perform migration, where data stored on
one volume is moved to another volume. TSM moves data on predefined set of volumes to another
set of volumes with the same characteristics. Thus, archiving data and freeing up the current volume
for use by other applications.
There can be situations where data residing on volumes (LDEVs) in XP arrays is not frequently accessed.
Such data can be moved to a lower performing tier. LDEVs that are experiencing high IO/s should
be moved to a higher performing tier, or to a lower utilized RAID group within the same tier to balance
performance. To identify the set of volumes or LDEVs for data migration, use XP Performance Advisor
where you can view the usage data for LDEVs and related RAID groups in the form of charts. XP
Performance Advisor displays charts for the selected LDEVs, for the specified metric category, metric,
and duration. You can analyze the charts to know the LDEVs and related RAID groups that have less
frequently used data. The charts displayed show the data read-write and the IO/s for the selected
LDEVs and their associated RAID groups. Further, based on the data projected, you can decide on
the data that needs to be migrated to lesser used volumes. Use TSM to move data from the source
volumes to other target volumes that satisfy the performance (Service Level Objectives) for that data.
This is especially useful in cases where the performance required for the volumes changes with the
passage of time.
Link and launch of XP Performance Advisor is supported by TSM from v6.2.0-00 onwards. Once
launched, the charts for LDEVs are displayed in the TSM GUI for all the XP array types that XP
Performance Advisor supports. For more information on TSM, see the manuals set provided for XP
Tiered Storage Manager Software on the HP Manuals page. XP Performance Advisor can be launched
for Migration Group volumes, Storage Tier volumes, and in the Create Migration Task operation in
order to facilitate selection of source and target volumes.
Viewing performance graphs for LDEVs
To access XP Performance Advisor from TSM and view the charts for LDEVs belonging to a storage
domain:
1. On the TSM window, expand Storage Domains to view the list of storage domains.
2. From the list, expand the storage domain for which you want to view the performance graphs
of the associated LDEVs.
The Migration Groups and Storage Tiers are displayed.
3. Click Migration Groups.
The Migration Groups window is displayed.
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