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
Of course. You should budget things properly or you're not doing your
job. Network hardware, power control, redundancy, etc, should all be
taken into consideration. And to some extent, the IBM maintenance
contract needs to be replaced with man power to repair/replace broken
parts as & when neede
And cabling and network ports, etc. And while you can maintain high
availability with those 500 things, you still will have failures and people
costs of repairing and putting that thing back into rotation.Can be done,
but it’s a cost people don't account for that I've seen.
-Original
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
just like to say the SUSE SLES12 SP-3 Beta is running very well, and KVM
is looking very good on the s390x.
__R
From: Linux on 390 Port [LINUX-390@VM.MARIST.EDU] on behalf of Dave Jones
[djo...@itconline.com]
Sent: 23 May 2017 20:08
To: LINUX-390@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
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