Willemina Konynenberg wrote:
>But according to the datasheets, upgrading, say, an H06 to an H13
>"requires planned down time"
Well, keep in mind there's "always" a second machine *somewhere*, in
another data center. For disaster recovery purposes, at least. That second
machine can also be used
e company customers/clients
after repeated budget cuts.
Mike Walter
-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Willemina
Konynenberg
Sent: Thursday, May 25, 2017 11:51 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: The Mainframe vs. the Server Fa
but it’s a cost people don't account for that I've seen.
>
> -Original Message-
> From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Tom
> Huegel
> Sent: Thursday, May 25, 2017 9:09 AM
> To: LINUX-390@VM.MARIST.EDU
> Subject: Re: [LINUX-39
--Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Tom Huegel
Sent: Thursday, May 25, 2017 9:09 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: [LINUX-390] The Mainframe vs. the Server Farm: A Comparison
Don't forget to consider the mainframe has
Don't forget to consider the mainframe has a much smaller enironmental
footprint that say 500 COTS.
The cost savings in power comsumption, air conditioning, and floor space
can be huge.
On Thu, May 25, 2017 at 10:21 AM, Willemina Konynenberg wrote:
> But according to the datasheets, upgrading, s
But according to the datasheets, upgrading, say, an H06 to an H13
"requires planned down time", so if you started small and then want to
grow, the only feasible (non-down-time) upgrade path is to buy a 2nd
mainframe, which, as you point out "won't scale painlessly".
With a COTS based system, you
As I recall from Appendix A of the "Linux for S/390" redbook, the S/390
(and, likely, zSeries) is designed to be maintainable WHILE WORKING.
The multi-dimensional ECC memory allows a memory card to be replaced WHILE
the system is running. Likewise, power supplies the CPs.
I have to agree that th
On 24.05.2017 00:03, John Campbell wrote:
> Cool...
>
> Though the real key is that the mainframe is designed for something at or
> beyond five 9s (99.999%) uptime.
>
> [HUMOR]
> Heard from a Tandem guy: "Your application, as critical as it is, is on a
> nine 5s (55.555%) platform."
> [/HUMO
@VM.MARIST.EDU
Subject: The Mainframe vs. the Server Farm: A Comparison
An interesting article from our friends at SUSE
https://dzone.com/articles/the-mainframe-versus-the-server-farm-a-comparison
Enjoy.
DJ
--
ITC-email-sig
*David Jones **|**Managing Director for zSystems Services **|**z/VM
Cool...
Though the real key is that the mainframe is designed for something at or
beyond five 9s (99.999%) uptime.
[HUMOR]
Heard from a Tandem guy: "Your application, as critical as it is, is on a
nine 5s (55.555%) platform."
[/HUMOR]
While other server farms (and I've worked with the USF a
An interesting article from our friends at SUSE
https://dzone.com/articles/the-mainframe-versus-the-server-farm-a-comparison
Enjoy.
DJ
--
ITC-email-sig
*David Jones **|**Managing Director for zSystems Services **|**z/VM,
Linux, and Cloud
703.237.7370 (Office) **|**281.578.7544 (Cell)*
*Info
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