HPE EVA Storage

host zoning on EVA 8400 without CA

 
johnCatBE
Advisor

host zoning on EVA 8400 without CA

Hello

I'd like to hear others views on zoning multiple hosts to an EVA8400 - without CA replication ie so that all eight ports are available - four per fabric in dual-fabric san.

Is it sensible to attempt to influence i/o activity by only allocating hosts to certain pairs of ports - or assign all hosts to all ports and let the EVA work it out.

on one fabric assuming 4 ports per fabric

eg
myhost1 evap1 evap2
myhost2 evap3 evap4

or simply
myhost1 evap1 evap2 evap3 evap4
myhost2 evap1 evap2 evap3 evap4

Good to hear others views on this - or a pointer to the HP recomendations.

thanks
2 REPLIES 2
Amar_Joshi
Honored Contributor

Re: host zoning on EVA 8400 without CA

Your best bet is to assign all the 8 ports to all the hosts. This will benefit you in cases when congestion occurs on some ports due to high activity from other hosts or when a controller has problem and all the hosts fail to second controller. Also your redundancy level is higher with all the ports assigned to all the hosts.
johnCatBE
Advisor

Re: host zoning on EVA 8400 without CA

Thanks Armadeep

Are there any exceptions to this? i'm wondering whether this should apply to all hosts all types ? ie no need to treat IBM AIX differently, for example?

john