Scenario: Migrate CIFS shares on Celerra to VNX
Tool: After experimenting with 4 different tools I recommend using Celerra Replicator as the best tool for this requirement
License: Get the free 180 day trial license for celerra replicator V2
Click here to learn about VDM
Step:1 Install temporary license
nas_license -create replicatorv2
Step:2 Setup communication
Source:
nas_cel -create remote_cel -ip 20.20.20.21 -passphrase nasadmin
IP: IP address of remote control station in slot 0
Destination:
nas_cel -create source_cel -ip 10.10.10.11 -passphrase nasadmin
IP: IP address of source control station in slot 0
Verify:
nas_cel -list
Step:3 Verify if all interfaces are able to communicate
server_ping server_2 -interface source_cel1 20.20.20.21
Repeat on all interfaces
Step:4 Setup interconnect between source server2 and destination server3
Source:
nas_cel -interconnect -create soure_cel1_s2s3 -source_server server_2
-destination_system remote_cel -destination_server server_3 -source_interfaces
ip=10.10.10.11,ip=10.10.10.12,ip=10.10.10.13 -destination_interfaces
ip=20.20.20.21,ip=20.20.20.22, ip=20.20.20.23 -bandwidth
MoTuWe08:00-13:00/8000
Note: If no bandwidth schedule is specified, all available bandwidth is used at all times.
Destination:
nas_cel -interconnect -create remote_cel1_s3s2 -source_server server_3
-destination_system source_cel -destination_server server_2 -source_interfaces
ip=20.20.20.21,ip=20.20.20.22, ip=20.20.20.23 -destination_interfaces
ip=10.10.10.11,ip=10.10.10.12,ip=10.10.10.13 -bandwidth MoTuWeTh08:00-17:00/3000
Validate:
nas_cel -interconnect -list
nas_cel -interconnect -validate id=30005
Step:5 Create a VDM replication session
nas_replicate -create rep_vdm1 -source -vdm vdm1 -destination -vdm dst_vdm -interconnect soure_cel1_s2s3 -max_time_out_of_sync 10
Note: If you specify a pool instead of an existing destination VDM, the pool is used to create the destination VDM automatically as read-only and uses the same name and size as the source VDM.
Verify:
nas_replicate -list
Step:6 Replicate the file system mounted to the VDM
nas_replicate -create vdm_v2 -source -fs src_fs_vdm -destination -pool id=3 -vdm
Vdm_2 -interconnect soure_cel1_s2s3
Note: Use the -vdm option used to indicate that the file system will be mounted on a VDM.
Verify:
nas_replicate -info vdm_v2
Look for last synchronization time
Step:7 Change the source file system to "read only"
Plan the cutover time to let users start using file system on new VNX; this is disruptive operation and should not perform until you are ready for brief outage associated with switchover period
1. quiesce or shutdown application that is using this file system
2. unmap the file system, change the properties to "read only" (better do it in unisphere)
Step:8 Create server interface on VNX
Failover from celerra to VNX by creating interface with same name as the source celerra server. If you are not sure of the name of source interface try executing the switchover from unisphere under "Replcias"
Source:
nas_replicate –switchover src_fs_vdm
After executing this command it will print a task id on the screen, please make a note of it.
Note: This command stops replication, mounts the source object as read-only, and marks the destination object as read-write sot that it can act as the new source object
Step:9 Check switch over status
nas_task -info 4211
nas_task -info all
Step:10 Verify file systems are available by testing from hosts
Step:11 Clean up replication sessions
nas_replicate –delete src_fs_vdm
Step:12 On VNX, back up file system data
Done!
