............................Table of Contents


1. Introduction to DR	1-1
2. DR Configuration Issues	2-1
..Configuring the System for DR	2-1
....Configuring for DR Attach	2-1
........I/O Devices	2-1
........Memory: `dr-max-mem`	2-2
........Processors	2-4
....Configuring for DR Detach	2-4
........Enabling DR Detach	2-4
........I/O Devices	2-4
........Memory	2-5
........Target Memory Constraints	2-6
........Swap Space	2-6
..Reconfiguration After a DR Operation	2-7
....I/O Devices	2-7


....Disk Devices	2-7
....When to Reconfigure	2-8
..DR and AP Interaction	2-8
..RPC Timeout or Loss of Connection	2-9
..Operating System Quiesce	2-10
..Suspend-Safe / Suspend-Unsafe Devices	2-11
..Special Quiesce Handling for Tape Devices	2-12
..DR and DDI	2-12
....DR and DDI_DETACH	2-12
....· To Detach a Detach-Unsafe Driver that is Loaded	2-13
....DR and `DDI_SUSPEND`/`DDI_RESUME`	2-13
....Adding Suspend-Safe Devices	2-14
....Adding Suspend-Bypass Devices	2-15
....DR Detach-Safe Devices	2-16
........Adding Detach-Safe Devices	2-17
3. Using Dynamic Reconfiguration	3-1
..Attaching a System Board	3-1
....Init Attach	3-2
....Complete Attach	3-2
....Attach Buttons	3-3
....· To Attach a Board with Hostview	3-4
....· To Attach a Board with dr(1M)	3-8
..Detaching a System Board	3-12
....Drain	3-12


....Complete Detach	3-13
........Network Devices	3-13
........Non-Network Devices	3-14
........Processors	3-15
........Finishing the Complete Detach Operation	3-15
....Hostview Detach Buttons	3-17
....· To Detach a Board with Hostview	3-18
....· To Detach a Board with dr(1M)	3-21
..Viewing System Information	3-23