un-export from source, reverse replication, export on target

Thanks Dynamox & Ernes - so in that case ,After i set up the reverse replication ,  I need to Unexport filesystems from NS80 & Export filesystems on VNX?

fair enough . If NS80 was being relocated to another location, we could switch over first and once NS80 is in place we could start with -reverse. Not sure why would you use "-overwrite_destination", unless while in switched over state you manually mounted the source file system and wrote to it.

why if everything can be accomplished with one command ?

ok , so you will execute this command from the source Celerra (NS80)

nas_replicate -reverse fs123

This command synchronizes the destination object with the source, mounts the source object read-only, stops the replication, and mounts the destination read/write. Starts replication in reverse direction from a differential

copy by using the same configuration parameters originally established for the session. If you like, create a test file system, set it up for replication and test your steps. Take a look at the manual for more examples.

Using Celerra Replicator (V2)  6.0.41 A03

Correct. You have to recreate the NFS Exports on the target

Take a closer look at the nas_replicate command. You would follow these steps:

1. nas_replicate -list

2. nas_replicate -switchover name|id -background

3. nas_replicate -start name|id -overwrite_destination -reverse

#2 above will set the original source to read-only and the original target as read-write.

#3 above will start replication from original target to original source (reverse replication)

NFS only shares ?

is the NS80 going away or you are going to use it as your new "target" array ?

YEs - Only NFS

NS80 is going to be a new Traget array-

I was writing my post while dynamox was writing his so I didn't see it. The only difference between dynamox's and my commands is that by using -reverse will automatically start replicating from original target to original source. If you use the -switchover command it will not start replication until you run #3 in my post.

Just to give you more control on when you start reverse replication

Thank you again - Ernes /Dynamox;

I 've one last thing , and I 'm all set -

So my first step is to -

1) Unexport the File systems at Source

server_export server_2 -Protocol nfs -unexport /ufs2 ( for e.g)

Can i not Unexport all at a time ?

2) Set up reverse replication

nas_replicate -reverse ufs2

3)Export file system @ destination -

server_export server_2 -Protocol nfs -all

I can use all to export , correct ?

Also, I need to clear the interconnects after the outage - Is there a command to do that ?

I Thank both of you for the explanation - This just to make sure i am folloeing the right steps.