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Contents
1 Overview of Auto LUN................................................................................5
Overview of Auto LUN..............................................................................................................5
Limitations of Auto LUN.............................................................................................................5
Source and target volumes.........................................................................................................5
Manual volume migration..........................................................................................................5
When to use manual volume migration........................................................................................7
Automatic volume migration.......................................................................................................7
Migrating volumes to another HDD class.................................................................................8
Migrating volumes within the same HDD class.........................................................................8
2 Requirements...........................................................................................10
System requirements................................................................................................................10
Source and target volume general requirements..........................................................................10
Volumes assigned to resource groups....................................................................................10
Supported and prohibited source and target volumes..................................................................11
Auto LUN with Thin Provisioning or Thin Provisioning Z virtual volumes..........................................14
Auto LUN with Continuous Access Synchronous Z and Continuous Access Journal Z........................15
Auto LUN with Continuous Access Synchronous and Continuous Access Journal .............................15
Auto LUN and Continuous Access Journal Z...............................................................................16
Auto LUN with Snapshot pair volumes.......................................................................................17
Auto LUN with Business Copy Z or Business Copy.......................................................................18
Auto LUN and Continuous Access Journal..................................................................................18
Volumes having access attribute of Data Retention......................................................................19
Volumes having access attribute of Volume Retention...................................................................20
Compatible XRC pair volumes..................................................................................................21
Concurrent Copy (CC) pair volumes..........................................................................................21
3 Auto LUN planning...................................................................................22
Manual migration plans..........................................................................................................22
Estimating differential tables.....................................................................................................22
Calculating the required amount of differential tables for a mainframe volume................................22
Control cylinders by mainframe emulation type......................................................................22
3390-3 emulation type example..........................................................................................23
Calculating the required amount of differential tables for an open-system volume............................23
Control cylinders by open emulation type..............................................................................23
Differential tables calculation for an OPEN-V volume..............................................................23
Differential tables calculation for other open emulation types...................................................24
Running concurrent manual migration plans...............................................................................25
Estimating the number of concurrent manual migration plans...................................................25
Fixed parity groups.................................................................................................................25
Auto Migration Parameters.......................................................................................................26
4 Auto LUN operations................................................................................27
Migrating a volume manually...................................................................................................27
Deleting a manual migration plan.............................................................................................28
Setting up auto migration plan parameters.................................................................................29
Deleting auto migration plans...................................................................................................30
Recreating auto migration plans ..............................................................................................30
Stopping the Auto Migration function........................................................................................31
Reserving a volume.................................................................................................................31
Fixing a parity group..............................................................................................................32
Changing disk usage rate limit for an HDD class........................................................................33
Viewing the migration history logs............................................................................................33
Contents
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