Added second EVA to environment

[Berd]

Hello colleagues,

I have just added a second EVA, a EVA8400, to my environment which already had a EVA8100.

Both are managed by the same CommandView server. My question is, am I ok to create Hosts on the new EVA which already exist on the current EVA. So having them present on both and storage presented from both. I guess this is not an issue, but thought I'd check.

Regards,
Berd

[Torsten. · Accepted solution]

No, this is really no problem.
All access is WWN based, so each array and LUN has a unique WWN anyway.

[hvhari]

It is required to have hosts defined for new EVA, if you need to present any LUN to the hosts. There is absolutely no issue in a host having access to different storage systems.

[Berd]

Thanks for your responses Torsten / Hari. Will I need to be concerned about LUN id's ? Will I need to assign these manually so there are no duplicates across the 2 EVA's ?

Berd

[Uwe Zessin]

If you are talking about "LUN addresses" (1..255), then technically, NO. Each EVA host port is an individual SCSI target for each host with an individual LUN address space.

However, if you might want to introduce Continuous EVA (remote replicate) at one later point, then it makes sense to use uniqe LUN addresses.

And it won't hurt if you do it anyway ;-)

[Berd]

Thanks Uwe