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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..........................................................................................................6
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
Volumes assigned to resource groups........................................................................................10
Source and target volume general requirements..........................................................................10
Supported and prohibited source and target volumes..................................................................10
Auto LUN with Thin Provisioning virtual volumes..........................................................................13
Auto LUN with Continuous Access Synchronous and Continuous Access Journal V-VOLs...................14
Auto LUN and Continuous Access Journal Z...............................................................................14
Auto LUN and Continuous Access Journal..................................................................................15
3 Auto LUN planning...................................................................................17
Manual migration plans..........................................................................................................17
Estimating differential tables.....................................................................................................17
Calculating the required amount of differential tables for a mainframe volume................................17
Control cylinders by mainframe emulation type......................................................................17
3390-3 emulation type example..........................................................................................18
Calculating the required amount of differential tables for an open-system volume............................18
Control cylinders by open emulation type..............................................................................18
Differential tables calculation for an OPEN-V volume..............................................................18
Differential tables calculation for other open emulation types...................................................19
Running concurrent manual migration plans...............................................................................19
Estimating the number of concurrent manual migration plans...................................................20
Fixed parity groups.................................................................................................................20
Auto Migration Parameters.......................................................................................................21
4 Auto LUN operations................................................................................22
Migrating a volume manually...................................................................................................22
Deleting a manual migration plan.............................................................................................23
Setting up auto migration plan parameters.................................................................................24
Deleting auto migration plans...................................................................................................25
Recreating auto migration plans ..............................................................................................25
Stopping the Auto Migration function........................................................................................26
Reserving a volume.................................................................................................................26
Fixing a parity group..............................................................................................................27
Changing disk usage rate limit for an HDD class........................................................................27
Viewing the migration history logs............................................................................................27
5 Auto LUN monitoring................................................................................29
Auto migration messages.........................................................................................................29
Auto migration general status messages................................................................................29
Successful auto migration plan messages..............................................................................30
Stopped auto migration plan messages.................................................................................30
Failed auto migration plan messages ...................................................................................31
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