DAG active/active or active/passive

Hi Exchange experts

we have exchange 2010 SP3 with 3 nodes DAG

i want to know if we have active/active DAG   or active/passive DAG

i got this output maybe will help you to tell me


[PS] C:\Windows\system32>Get-MailboxDatabaseCopyStatus | ft name,"EXDB8 2 GB Limit"

Name                                                        EXDB8 2 GB Limit
----                                                        ----------------
Mailbox Database 2050576820\EX2
EXDB1 Unlimited\EX2
EXDB4 16 GB Limit\EX2
EXDB2 Unlimited\EX2
EXDB7 1GB Limit\EX2
EXDB8 2 GB Limit\EX2


[PS] C:\Windows\system32>Get-MailboxDatabaseCopyStatus

Name                                          Status          CopyQueue ReplayQueue LastInspectedLogTime   ContentIndex
                                                              Length    Length                             State
----                                          ------          --------- ----------- --------------------   ------------
Mailbox Database 2050576820\EX2              Mounted         0         0                                  Healthy
EXDB1 Unlimited\EX2                          Mounted         0         0                                  Healthy
EXDB4 16 GB Limit\EX2                        Mounted         0         0                                  Healthy
EXDB2 Unlimited\EX2                          Healthy         0         1           27.02.2018 15:33:20    Healthy
EXDB7 1GB Limit\EX2                          Healthy         0         0           27.02.2018 15:32:24    Healthy
EXDB8 2 GB Limit\EX2                         Healthy         0         0           27.02.2018 15:33:11    Healthy


[PS] C:\Windows\system32>Get-MailboxDatabaseCopyStatus "EXDB8 2 GB Limit\ex2"

Name                                          Status          CopyQueue ReplayQueue LastInspectedLogTime   ContentIndex
                                                              Length    Length                             State
----                                          ------          --------- ----------- --------------------   ------------
EXDB8 2 GB Limit\EX2                         Healthy         0         0           27.02.2018 15:36:48    Healthy


[PS] C:\Windows\system32>Get-MailboxDatabaseCopyStatus "EXDB8 2 GB Limit\ex3"

Name                                          Status          CopyQueue ReplayQueue LastInspectedLogTime   ContentIndex
                                                              Length    Length                             State
----                                          ------          --------- ----------- --------------------   ------------
EXDB8 2 GB Limit\EX3                         Mounted         0         0                                  Healthy


[PS] C:\Windows\system32>Get-MailboxDatabaseCopyStatus -Identity "EXDB8 2 GB Limit" -active | Fl


RunspaceId                       : 742e8129-4466-4967-93df-ed04ab317f1d
Identity                         : EXDB8 2 GB Limit\EX3
Name                             : EXDB8 2 GB Limit\EX3
DatabaseName                     : EXDB8 2 GB Limit
Status                           : Mounted
MailboxServer                    : EX3
ActiveDatabaseCopy               : Ex3
ActivationSuspended              : False
ActionInitiator                  : Administrator
ErrorMessage                     :
ErrorEventId                     :
ExtendedErrorInfo                :
SuspendComment                   :
SinglePageRestore                : 0
ContentIndexState                : Healthy
ContentIndexErrorMessage         :
CopyQueueLength                  : 0
ReplayQueueLength                : 0
LatestAvailableLogTime           :
LastCopyNotificationedLogTime    :
LastCopiedLogTime                :
LastInspectedLogTime             :
LastReplayedLogTime              :
LastLogGenerated                 : 0
LastLogCopyNotified              : 0
LastLogCopied                    : 0
LastLogInspected                 : 0
LastLogReplayed                  : 0
LogsReplayedSinceInstanceStart   : 0
LogsCopiedSinceInstanceStart     : 0
LatestFullBackupTime             : 05.01.2018 07:48:23
LatestIncrementalBackupTime      :
LatestDifferentialBackupTime     :
LatestCopyBackupTime             : 23.06.2017 10:49:27
SnapshotBackup                   : True
SnapshotLatestFullBackup         : True
SnapshotLatestIncrementalBackup  :
SnapshotLatestDifferentialBackup :
SnapshotLatestCopyBackup         : True
LogReplayQueueIncreasing         : False
LogCopyQueueIncreasing           : False
OutstandingDumpsterRequests      : {}
OutgoingConnections              :
IncomingLogCopyingNetwork        :
SeedingNetwork                   :
ActiveCopy                       : True



[PS] C:\Windows\system32>
LVL 1
sword12Asked:
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timgreen7077Connect With a Mentor Exchange EngineerCommented:
Yes the very nature of the DAG is HA. If the active fails the passive turns in. Active/Active generally refers to active DBs in multiple sites but if you have one site then you are correct you are active/passive which is how DAGS work.
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Gaurav SinghConsultantCommented:
yoy have active passive dav.
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sword12Author Commented:
HI

thank you for this info

but can you give more info how can i know the difference between active/active and active/passive  

a little more info pls
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Gaurav SinghConnect With a Mentor ConsultantCommented:
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timgreen7077Exchange EngineerCommented:
Active/Passive is the nature of the DAG basically you will always have active DBs where the users are connected to their mailboxes, and the passive DBs that are being replicated from the active DBs. the active will show the DBs as mounted, while the passive will show DBs as healthy. Those passive healthy DBs will automatically become active and show a status of mounted if your current active mounted DBs have issues, unless you made any changes to the default setup of your DAG. The artlice GAURAV referenced can explain in more detail, but you know active passive by active showing status of mount and passive showing status of healthy. Passive becomes active is the active experience issues.
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sword12Author Commented:
so in other words

there nothing call Active/active     with load balancer

becuase you said DAG work like this one DB online another DB in standby status

if the on-line one failed the standby will take place

so it is an HA  work

so why some ppl said DAG has two types  active/active    and active/passive

i saw on INTERNET only active/passive configuration    

i am talking about only one single site no replication to other site  

kindly advice
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