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тАО07-17-2013 07:23 PM
тАО07-17-2013 07:23 PM
P2000 replication -change remote address
Hi experts,
Customer has two P2000 G3 with replication configuration.
Because bandwidth between DC & DR is quite small, we firstly installed 2 storages in the same site (DC) using direct connection between iSCSI ports, create replication sets and do full copy for first replication images . After that we moved the remote storage to DR site.
We had to change the IP address of iSCSI ports (host ports) to other subnet. But the command show replication-sets still show the old remote address in the secondary volumes' section.
We used command set replication-volume-parameters with parameter remote-address to change remote address for all secondary volumes.
Quoted from CLI reference:
Description: Sets parameters for a specified replication volume. This command must be run separately on each system where the volume resides; changes to these parameters are not automatically synchronized across systems.
The command was successful for storage at DR, but not successful for storage at DC. Below is the error message:
# set replication-volume-parameters remote-address ip=[new IP addresses] rData
Error: The specified volume was not found. - The specified primary volume was not found. (rData)
Error: The specified volume was not found. (2013-07-17 10:12:12)
Issue show replication-sets at DC -> result is storage canтАЩt get new IP address in the secondary volumeтАЩs parameters, the connection status to secondary volume is Offline.
So the questions are:
- Is it possible to change iSCSI IP address of remote storage (DR) without having to recreate replication set?
- If yes, which steps we missed?
Thanks in advance,
Hanh
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тАО07-24-2013 05:01 AM
тАО07-24-2013 05:01 AM
Re: P2000 replication -change remote address
hello there,
firstly please note we dont not support direct connection between MSAs for replication.
please use switches network when replication is used in both cases when msa are at same site or different sites
ideally below are the steps to be done when msa are moved to diff site and put in diff subnet.
1.Make sure all replications are completed
2.Detach the secondary volumes from secondary MSA smu
3.Delete the remote MSA system
4.Move the secondary MSA to the DR site
5.Change the Management Controller IP addresses and iscsi ports on DR site and make sure both MC ports and iscsi ports are communicable across the sites
6.Add the remote MSA with new ips addresses at the source site
7.Reattach the secondary volumes
8.Check replication and replicate new data
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тАО07-24-2013 05:02 AM
тАО07-24-2013 05:02 AM
Re: P2000 replication -change remote address
Hi Hanh
- Is it possible to change iSCSI IP address of remote storage (DR) without having to recreate replication set?
-> Yes
Detach the replication
Change IP address
rettach the replication set
Please Check following CLI Guide for CLI Syntax
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c02520779/c02520779.pdf
Please check SMU Reference if you want to do it via SMU
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c02520791/c02520791.pdf
Thanks
Sai
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тАО07-24-2013 08:43 AM
тАО07-24-2013 08:43 AM
Re: P2000 replication -change remote address
It appears you are attempting to run this command from DC, the primary array. Oddly enough, this command needs to be run on the secondary array, specifying the IP addresses of the secondary array and using the secondary volume. For example:
(Running on the secondary array, rTestRA is the secondary volume)
# set host-parameters netmask 255.255.255.0 gateway 0.0.0.0 ip 10.20.5.27 port a1
WARNING: This change will take effect immediately. Changes may affect access to data.
Are you sure? yes
Success: Command completed successfully. - The host parameters were changed successfully. (2013-07-24 09:19:38)
# set host-parameters netmask 255.255.255.0 gateway 0.0.0.0 ip 10.30.5.27 port a2
WARNING: This change will take effect immediately. Changes may affect access to data.
Are you sure? yes
Success: Command completed successfully. - The host parameters were changed successfully. (2013-07-24 09:19:55)
# set host-parameters netmask 255.255.255.0 gateway 0.0.0.0 ip 10.20.5.37 port b1
WARNING: This change will take effect immediately. Changes may affect access to data.
Are you sure? yes
Success: Command completed successfully. - The host parameters were changed successfully. (2013-07-24 09:20:12)
# set host-parameters netmask 255.255.255.0 gateway 0.0.0.0 ip 10.30.5.37 port b2
WARNING: This change will take effect immediately. Changes may affect access to data.
Are you sure? yes
Success: Command completed successfully. - The host parameters were changed successfully. (2013-07-24 09:20:23)
# set replication-volume-parameters remote-address ip=10.20.5.27,10.30.5.27,10.20.5.37,10.30.5.37 rTestRA
Success: Command completed successfully. (2013-07-24 09:20:59)
I'd suggest waiting a few minutes before attempting the replication.