Network segment of remote copy SLD configuration

[玉田 周]

We are planning DR solution using remote copy SLD config with 4 controllers par 3par storage system.

I am wondering if it is necessary to assign subnet par 3par storage system.
If we must split subnet each 3par, there are 3 subnets(site A*2, site B*1) at least.

I could look only below two statements about restriction of subnet using remote copy in the user guide.

If you know anything else, could you let me know, please ?

===

The GigE interface and the management Ethernet port of an HP 3PAR StoreServ Storage system controller

node must be on different IP subnets.

Because the storage systems in the remote-copy configuration may be on different subnets, you must set

the gateways for each system.

===

I think that if we only have to do is keeping the rule of general TCP/IP, it is no particular restriction of remote copy.

[Sheldon Smith · Accepted solution]

RCIP addresses must not be in the same subnet(s) as the management addresses.

Example 1 - Each address in a different subnet:
System A1: mgmt 10.0.1.1/24 - RCIP1 10.1.1.1/24, RCIP2 10.2.1.1/24
System A2: mgmt 10.0.2.1/24 - RCIP1 10.1.2.1/24, RCIP2 10.2.2.1/24
System B1: mgmt 10.0.3.1/24 - RCIP1 10.1.3.1/24, RCIP2 10.2.3.1/24

Example 2 - Each site in a different subnet:
System A1: mgmt 10.0.1.1/24 - RCIP1 10.1.1.1/24, RCIP2 10.1.1.2/24
System A2: mgmt 10.0.1.2/24 - RCIP1 10.1.1.3/24, RCIP2 10.1.1.4/24
System B1: mgmt 10.0.2.1/24 - RCIP1 10.1.2.1/24, RCIP2 10.1.2.2/24

Example 3 - Management and RCIP in different subnets:
System A1: mgmt 10.0.1.1/24 - RCIP1 10.1.1.1/24, RCIP2 10.1.1.2/24
System A2: mgmt 10.0.1.2/24 - RCIP1 10.1.1.3/24, RCIP2 10.1.1.4/24
System B1: mgmt 10.0.1.3/24 - RCIP1 10.1.1.5/24, RCIP2 10.1.1.6/24

All are valid.

Note: While I work for HP, all of my comments (whether noted or not), are my own and are not any official representation of the company.
----------
If my post was useful, click on my KUDOS! "White Star" !

[玉田 周]

Thanks for the help.