HP StorageWorks XP Remote Web Console Software - Manual (Page 3)

Contents
1 Overview of HP StorageWorks XP Snapshot Software......................................6
XP Snapshot............................................................................................................................6
Features..................................................................................................................................6
Benefits...................................................................................................................................6
Differentiation from HP StorageWorks XP Business Copy Software...................................................7
2 About XP Snapshot Operations....................................................................8
XP Snapshot Components..........................................................................................................8
Volumes and Volume Pairs....................................................................................................8
Volume Pairs and Consistency Group.....................................................................................8
XP Snapshot Software...........................................................................................................8
License...............................................................................................................................8
RAID Manager....................................................................................................................9
XP Snapshot Operations............................................................................................................9
Create V-VOL Management Area Operation..........................................................................10
Creation of a Pool..............................................................................................................10
Creation of a Virtual Volume...............................................................................................11
Creation of an XP Snapshot Pair..........................................................................................12
Storing XP Snapshot Data...................................................................................................12
Restoration of an XP Snapshot Pair.......................................................................................13
Deletion of XP Snapshot Data or an XP Snapshot Pair.............................................................13
Status of the XP Snapshot Pairs.................................................................................................14
Copy Threshold Option...........................................................................................................25
Interoperability with Other Products and Functions......................................................................26
Data Retention Utility..........................................................................................................27
Auto LUN..........................................................................................................................27
XP Business Copy...............................................................................................................27
XP Continuous Access or XP Continuous Access Journal..........................................................30
HP StorageWorks XP Thin Provisioning Software....................................................................32
3 Preparing for XP Snapshot Operations........................................................33
System Requirements...............................................................................................................33
Volume Requirements..........................................................................................................33
XP Snapshot Software Requirements.....................................................................................35
License Requirements..........................................................................................................35
Shared Memory Requirements.............................................................................................35
Requirements for RAID Manager..........................................................................................35
Operational Requirements........................................................................................................35
Calculating the Maximum Number of Pairs............................................................................36
Calculating the Number of XP Snapshot Pairs by Using the Number of Differential Tables.......36
Calculating the Number of XP Snapshot Pairs by Using the Shared Memory Capacity for the
Virtual Volume Management Area...................................................................................37
Calculating the Number of XP Snapshot Pairs Using the Number of Pair Tables.....................39
Performance Considerations................................................................................................40
Notes on Defining Pool Capacity.........................................................................................40
Notes on Using External Volumes as Pool-VOLs......................................................................41
Requirements for Maintaining XP Snapshot................................................................................41
Notes on Replacing the Microcode Offline............................................................................41
Notes on Switching Off the Power Supply.............................................................................41
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