RE: How many Power servers can be managed by one HMC -- MIDRANGE-L

Hi
You will get away with only the one HMC until you MUST have <local> HMC
access inside your data centre for server repair, partition startup or
shutdown.

If you can guarantee your IBM CE or agent browser access to the remote HMC
when standing next to the local server performing a service action then by
all means go for it.

I myself would not.

Regards
Shaun

Â Â
Shaun Ryan
Systems Administrator SAP Basis
[1][USEMAP] [2]P: +64 3 363 6939
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[5]167 Main North Road, Christchurch 8140

-----Original Message-----
From: Patrik Schindler <poc@xxxxxxxxxx>
Sent: Tuesday, 18 February 2020 11:29 a.m.
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: How many Power servers can be managed by one HMC

Hello,

Am 17.02.2020 um 22:17 schrieb Laurence Chiu <lchiu7@xxxxxxxxx>:

> Going to put two Power servers into two data centers which are about
50km
> apart but connected via 100Gbs DWDM.
>
> Do I need a HMC in both data centers or can I get by with one
controlling
> both servers? If only one then I would probably locate it in the DR
site.

You need to answer that question yourself. :-)

POWERs run fine without a HMC, and POWERs can AFAIK be managed by up to
two HMCs. HMCs need an IP connection to the POWERs, so if your DCs are
networked, you will be fine with just one.

Unless you're standing in the data center without HMC and need Console
Access or need to shuffle with LPARS or whatever tasks HMC is used for.

If you don't need local console access, you can open the HMC application
remotely through a browser. Works, as long as the network is available.

Even console access could be granted with some workarounds, maybe. I'm not
fluent enough with modern hardware to really give a 100% true answer.

You see, the true answer to your question is "it depends". :-)

:wq! PoC

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