Snapmirror source or primary configuration of VSM & QSM

Snapmirror primary or source configuration  for VSM (Volume snapmirror)

primary controller name : src
Secondary controller name : dst

primary controller IP : 192.168.1.2
Secondary controller IP : 192.168.1.3

primary &Secondary  aggregate name: aggr1
primary &Secondary Vol name: vol1

src> aggr create aggr1 20
src> aggr status
src> vol create vol1 aggr1 1g
src> vol status
src> wrfile -a \etc\hosts 192.168.1.3 dst
src> ping 192.168.1.3
src>ping dst
src> license add (license no)
src> license  # to check license
src> options snapmirror.enable on
src> options snapmirror.access host=dst
src> wrfile snapmirror.allow
192.168.1.3 # secondary filer ip
dst    # secondary filer name

Press CTRL-C to exit and save the file

src> cifs shares -add vol_share1 /vol/vol1
src> cifs shares # to check shares




Host (Windows )

windows Start --> Run--> \\src\vol_share1              # Open this path

copy and paste some files  for to view the data replication from Primary to Secondary Replication

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Snapmirror primary configuration  for QSM (Qtree snap mirror)

Storage

src> aggr create aggr1 20
src> aggr status
src> vol create vol1 aggr1 1g
src> vol status
src>wrfile -a \etc\hosts 192.168.1.3 dst
src> ping 192.168.1.3
src> ping dst
src> qtree create /vol/vol1/qtree
src> qtree  # to check qtree
src> cifs shares -add vol_qtree /vol/vol1/qtree
src> cifs shares # to check shares
src> license add (license no)
src> license  # to check license
src> options snapmirror.enable on
src>options snapmirror.access host=dst
src> wrfile snapmirror.allow
192.168.1.3 # secondary filer ip
dst    # secondary filer name
Press CTRL-C to exit and save the file

Host (Windows )

Go to Run-> \\src\vol_qtree  # open this path
copy and paste some files  for to view the data replication from Primary to Secondary Replication

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Snapmirror Secondary  Configuration

SnapMirror

Snapmirror:

1. Snapmirror is a license product in Netapp.
2. SnapMirror is for Disaster recovery and its Loss of region.
– Disaster Recovery
– Data migration
– Data replication
– Remote access and load sharing
3. Using snapmirror data transfer one filer to another filer or in same filer.
4. Snapmirror will work at Volume and Qtree level.
5. Snapmirrror needs a source and destination filer.
6. Snapmirror is used primarily for data redundancy
7. Real time replication of data
8. Maximum distance of up to 35km
9. Fibre Channel or DWDM protocol

In snapmirror 3 mode of data replication

Sync                = data transfer continually  

Async              = data transfer in scheduled timing

Semi-sync       =  like Async

Requirements and Limitations for VSM

1. Destination’s Data ONTAP® version must be equal to or more recent than the source
2. Like-to-like transfers only: flex-to-flex
3. Destination volume capacity should be equal or greater than source
4. Quota cannot be enabled on destination volume
5. TCP port range 10565–10569 must be open

Qtree SnapMirror (QSM)

1. Logical replication
2. Independent of the type of volume
3. Source volume and qtree are online/writable
4. Destination volume is online/writable
5. Destination qtree is read-only

Requirements and Limitations for QSM

1. Supports Async mode only
2. Destination volume must have 5% extra space
3. Destination qtree cannot be /etc name
4. Cannot be initialized using a tape device
5. Does not support cascading of mirrors
6. Deep directory structure and large number of small files may impact performance

Snapmirror primary configuration of VSM & QSM

Snapmirror Secondary configuration of VSM & QSM

Snapmirror schedule configuration