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Index
quad-port Fibre Channel HBA 51, 59 aggregate ownership
relocation of 125 aggregate relocation
benefits of 125 commands for 129
effect on root-data partitioning 126 effect on shared disks 126 how it works 125
monitoring progress of 132 overriding a veto of 132 aggregates
conditions of manual takeovers with configuration mismatches 102
asymmetrical
storage configuration 37 automatic giveback
commands for configuring 81 how it works 80
parameters and how they affect giveback 82 automatic takeover
triggers for 80 automatic takeovers
commands for changing policy 79
B
preparing for cabling 50 cabling
Channel A, for mirrored HA pairs 61 Channel A, for standard HA pairs 52 Channel B, for mirrored HA pairs 63 Channel B, for standard HA pairs 54
error message, cross-cabled HA interconnect 56–58, 69, 70
HA interconnect for standard HA pair 56, 69 HA interconnect for standard HA pair, 32xx systems 57, 70
HA interconnect for standard HA pair, 80xx systems 58, 70
HA interconnect, cross-cabled 56–58, 69, 70 HA pairs 45
preparing equipment racks for 49 preparing system cabinets for 50 requirements 48
chassis configurations, single or dual 40 CIFS sessions
effect of takeover on 25 cluster HA
configuring in two-node clusters 75 cluster HAconfiguring in two-node clusters
disabling, when halting or rebooting a node in a two-node cluster 100
cluster high availability
configuring in two-node clusters 75 cluster network 13
clusters
configuring cluster HA in two-node 75 configuring switchless-cluster in two-node 75 special configuration settings for two-node 75
clusters and HA pairs 13 commands
aggregate home status 87 cf giveback (enables giveback) 84 cf takeover (initiates takeover) 84 cluster ha status 87
disabling storage failover 75 enabling HA mode 74 enabling storage failover 75
for automatic giveback configuration 81 for changing automatic takeover policy 79 for checking node states 88
for configuring hardware-assisted takeover 77 ha-config modify 72
ha-config show 72 ha-config status 87
halting a node without initiating takeover 99 rebooting a node without initiating takeover 99 storage disk show -port (displays paths) 114 storage failover giveback (enables giveback) 84 storage failover status 87
storage failover takeover (initiates takeover) 84 takeover (description of all status commands) 87 comments
how to send feedback about documentation 137 comparison
HA pair types 13 Config Advisor
checking for common configuration errors with 77 downloading and running 77
configuration variations mirrored HA pairs 19 configurations
HA differences between supported system 42 testing takeover and giveback 84
controller failover benefits of 9 controller failovers
events that trigger 21 current owner
disk ownership type, defined 30
D
data network 13 Data ONTAP
upgrading nondisruptively 118
upgrading nondisruptively, documentation for 118 disk shelves
about modules for 112
adding to an HA pair with multipath HA 110 hot swapping modules in 115
hot-removing 118
managing in an HA pair 110 disk slicing
benefits of for entry-level platforms 37 disks
how shared HDDs work 38
requirements for using partitioned 40
slicing, benefits of for entry level and All Flash FAS platforms 37
types of ownership for 30 viewing ownership for 31 documentation
how to receive automatic notification of changes to 137
how to send feedback about 137 required 46
DR home owner
disk ownership type, defined 30 dual-chassis HA configurations
diagram of 40 interconnect 41
E
eliminating
single point of failure 9 EMS message
takeover impossible 32 entry-level platforms
benefits of root-data partitioning for 37 epsilon
moving during manually initiated takeover 104 equipment racks
installation in 45 preparation of 49 events
table of failover triggering 21
F
failover
benefits of controller 9 failovers
events that trigger 21 failures
table of failover triggering 21 fault tolerance
how HA pairs support 7
feedback
how to send comments about documentation 137 Fibre Channel ports
identifying for HA pair 51, 59 forcing takeover
commands for 102
effects of using the immediate option 102 FRU replacement, nondisruptive
documentation for 118
G
giveback
CFO (root) aggregates only 108 commands for 108
commands for configuring automatic 81 definition of 20
effect on root-data partitioning 29 effect on shared disks 29 interrupted 106
manual 108
monitoring progress of 106, 108 overriding vetoes 108
partial-giveback 106 performing a 106 testing 84 veto 106
what happens during 27 giveback after reboot
automatic 80
H
HA
configuring in two-node clusters 75 HA configurations
benefits of 7 best practices 32 definition of 7
differences between supported system 42 single- and dual-chassis 40
HA interconnect cabling 56, 69
cabling, 32xx dual-chassis HA configurations 57, 70 cabling, 80xx dual-chassis HA configurations 58, 70 in the HA pair 7
single-chassis and dual-chassis HA configurations 41
events that trigger failover in 21 in a two-node switchless cluster 17 installation 45
managing disk shelves in 110 MetroCluster, compared with 16
required connections for using UPSs with 71 setup requirements 33
setup restrictions 33
storage configuration variations 37 types of
installed in equipment racks 45 installed in system cabinets 46 mirrored 18
types of, compared 13 HA pairs and clusters 13 HA policy
modifying the HA state 72 ha-config show command
verifying the HA state 72 hardware
components described 11 HA components described 11 single point of failure 9 hardware replacement, nondisruptive
documentation for 118 hardware-assisted takeover
commands for configuring 77 events that trigger 78 how it speeds up takeover 25 requirements for 36
HDDs
shared, how they work 38 standard layouts for shared 38 high availability
configuring in two-node clusters 75 home owner
disk ownership type, defined 30 hot-removing
disk shelves 118
I
information
how to send feedback about improving documentation 137
standard shared HDD 38 licenses
commands for performing 102
effects of in mismatched All-Flash Optimized personality systems 102
MetroCluster
HA pairs, compared with 16 mirrored HA pairs
about 18 advantages of 18 cabling 59
cabling Channel A 61 cabling Channel B 63 restrictions 35
setup requirements for 35 variations 19
best practices for changing types 113 hot-swapping 115
restrictions for changing types 112 testing 113
multipath HA loop
adding disk shelves to 110
N
node states
description of 88
Nondisruptive aggregate relocation 7 nondisruptive hardware replacement
documentation for 118 shelf modules 112 nondisruptive operations
how HA pairs support 7
nondisruptive storage controller upgrade using aggregate relocation
documentation for 118
storage controller upgrade using aggregate relocation, nondisruptive 118
nondisruptive upgrades Data ONTAP 118
Data ONTAP, documentation for 118 NVRAM
adapter 48
O
original owner
disk ownership type, defined 30 overriding vetoes
giveback 106 owner
disk ownership type, defined 30 ownership
disk, types of 30
displaying disk ownership 31 displaying partition 31
P
panic
leading to takeover and giveback 80 parameters
of the storage failover modify command used for configuring automatic giveback 82
partitioning
root-data, benefits of 37 root-data, how it works 38
root-data, requirements for using 40 root-data, standard layouts for 38 partitions
viewing ownership for 31 platforms
benefits of root-data partitioning for entry-level and All Flash FAS 37
plexes
requirements for, in the HA pair 35 port list
creating for mirrored HA pairs 60 ports
identifying which ones to use 51, 59 power supply
best practices 32 preparing equipment racks 49
R
racking the HA pair in a system cabinet 46 in telco-style racks 45 reboot
leading to takeover and giveback 80 relocation
aggregate ownership 125, 127 of aggregates 125, 127
for using root-data partitioning 40 HA pair setup 33
hot-swapping a disk shelf module 115 tools 47
restrictions
HA pair setup 33 in mirrored HA pairs 35 root aggregate
CFO HA policy 28 data storage on 32 giveback of 28 root-data partitioning
benefits of 37
effect on aggregate relocation 126 effect on giveback 29
effect on takeover 29 how it works 38
requirements for using 40 standard layouts for 38
S
sharing storage loops or stackswithin HA pairs 37 shelf modules
upgrading or replacing 112 shelves
hot-removing 118
managing in an HA pair 110 single point of failure
SMB 3.0 sessions on Microsoft Hyper-V effect of takeover on 25
SMB sessions
effect of takeover on 25 spare disks
in the HA pair 7, 35 standard HA pair
cabling Channel A 52 cabling Channel B 54
cabling HA interconnect for 56, 69
cabling HA interconnect for, 32xx systems 57, 70 cabling HA interconnect for, 80xx systems 58, 70 standard layouts
shared HDD 38 states
description of node 88 status messages
description of node state 88
storage aggregate relocation start command key parameters of 130
storage configuration variations standard HA pairs 37
storage controller upgrade using aggregate relocation, nondisruptive
documentation for 118 storage failover
commands for disabling 75 commands for enabling 75
testing takeover and giveback 84 suggestions
how to send feedback about documentation 137 switchless-cluster
enabling in two-node clusters 75 symmetrical
storage configuration 37 system cabinets
installation in 46 preparing for cabling 50 system configurations
HA differences between supported 42
T
takeover
automatic 20
configuring when it occurs 79 definition of 20
effect on CIFS sessions 25 effect on root-data partitioning 29 effect on shared disks 29 effect on SMB 3.0 sessions 25 effect on SMB sessions 25 hardware-assisted 25, 36 hardware-assisted takeover 78 manual 20
moving epsilon during manually initiated 104 reasons for 79
testing 84
what happens during 25 when it occurs 20 takeover impossible
EMS message 32 takeovers
commands for configuring hardware-assisted 77 commands for forcing 102
commands to change policy for 79 effects of using the immediate option 102 testing
takeover and giveback 84 tools
required 47 twitter
how to receive automatic notification of documentation changes 137
two-node switchless cluster 17
U
uninterruptible power supplies See UPSs
UPSs
required connections with HA pairs 71 utilities
checking for common configuration errors with Config Advisor 77
downloading and running Config Advisor 77
V
verifying
takeover and giveback 84 veto
giveback 106 override 106 vetoes
of an aggregate relocation 132 overriding 132