Document revision date: 30 March 2001

## Volume Shadowing for OpenVMS

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T
Timeouts
disk recovery
Transient state
definition
performance
Transitions
during copy operations
during merge operations
during minimerge operations
in shadow set membership
U
UICs (user identification codes)
for mounting disks
Unit errors
recovery from
Upgrades
operating system
User identification codes
See UICs
V
Virtual units
as system disk shadow set
clusterwide #1
clusterwide #2
definition
distributed
naming conventions
VOLPRO privilege
required for MOUNT command
VOLPROC command
messages
Volume labels
copy operation
differences among shadow set members
Volume sets
constructing
mounting #1
mounting #2
with MNT$_SHANAM
shadowed
virtual unit item descriptor
Volume shadowing
capacity license #1
capacity license #2
concepts
copy assist performance
definition
disabling
disabling copy assists on HSC controller
enabling
license registration for
minimerge performance
overview
per disk license #1
per disk license #2
processing messages
providing high data availability
recovery from device failures
recovery strategies after a system failure
shadow server messages
shadow set configurations
system parameters
virtual units
VOLPROC messages
Volume shadowing generation number
used for copy operation
Volumes
compatibility with disks
W
Write bitmaps
creating
DISMOUNT command
MOUNT command
displaying
displaying IDs
local
managing with DCL commands
master #1
master #2
messages
managing
representation
Write protection
hardware
Write requests
performance

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