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HP-UX 11i v3 Dynamic nPartitions
Features and configuration recommendations
Table of Contents
Introduction ................................................................................................................................... 3
nPartitions Background .................................................................................................................... 3
Dynamic nPartitions operations ......................................................................................................... 3
Cell online activation ................................................................................................................... 3
Cell online deactivation................................................................................................................ 3
Base cells and floating cells .......................................................................................................... 4
Dynamic nPartitions commands......................................................................................................... 4
I/O chassis................................................................................................................................ 4
Scenarios for Dynamic nPartitions...................................................................................................... 5
Adding capacity to an nPartition.................................................................................................... 5
Shifting floating capacity to meet demand peaks .............................................................................. 5
Temporary removal of a partition................................................................................................... 6
Replacement of hardware............................................................................................................. 6
Configuration recommendations for Dynamic nPartitions........................................................................ 7
Minimum amount of memory on base cells ...................................................................................... 7
I/O chassis................................................................................................................................ 8
Duration of Dynamic nPartitions operations...................................................................................... 8
Sensitivity to operating system workload ......................................................................................... 8
Current limits and conditions............................................................................................................. 9
Rollout of Dynamic nPartitions functionality in HP-UX 11i v3................................................................ 9
Dynamic nPartitions, virtual partitions, and Integrity Virtual Machines................................................... 9
Requirement to reset Workload Manager ........................................................................................ 9
Integration with instant capacity..................................................................................................... 9
Interaction with processor sets ..................................................................................................... 10
Cell reset recovery time.............................................................................................................. 10
Summary..................................................................................................................................... 10
Illustrated example of online cell migration........................................................................................ 11
Command sequences for Dynamic nPartitions scenarios ...................................................................... 14
Cell replacement....................................................................................................................... 14
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