, 2010 9:13 AM
To: IBM-MAIN@bama.ua.edu
Subject: Benchmarking the IPL
My management wants to benchmark the IPL process to see how long it will
take at various levels of MIPS, MSUs, or whatever measurement criteria
can be used. The purpose of this is to determine what the smallest z10
is we can
Yes, understood.
"Check with your IBM representative," but financially I don't think you
would see an IBM difference between warm and cold standby. So why not warm?
- - - - -
Timothy Sipples
Resident Architect (Based in Singapore)
STG Value Creation and Complex Deals Team
IBM Growth Markets
E-Mai
On Mon, 17 May 2010 09:38:27 -0500, Roland Schiradin
wrote:
>Tom,
>
>z/OS contains a cblock IPST pointed by ECVTIPST.
>
>This cblock contains information about the IPL time for various steps.
>SHOWzOS display the data and there is also a IPCS command
>but can't remember the name.
>
>Roland
IPLD
ussion List [mailto:ibm-m...@bama.ua.edu] On
>> Behalf Of Timothy Sipples
>> Sent: Sunday, May 16, 2010 5:26 AM
>> To: IBM-MAIN@bama.ua.edu
>> Subject: Re: Benchmarking the IPL
>>
>> Tom,
>>
>> I'm a little confused by your question. Reading betw
Tom, if you're running as a guest under z/vm, which some D/R vendors do,
then you could cap it with a set share xxx absolute limithard. You didn't say
if
this was your box or a D/R Vendor box.
If there's no z/VM, then LPAR weights is what you have to work with.
I would definitely check out t
On Mon, 17 May 2010 07:41:33 -0500, Kelman, Tom
wrote:
>I saw your post talking about having an A01 warm standby with Z03 CBU.
Tom,
Thats the setup we are using: z9BC A01 at an alternate site. FWIW, our
most recent IPLs of z/OS 1.11 on that machine took approxmiately 7 minutes
from start t
t [mailto:ibm-m...@bama.ua.edu] On
> Behalf Of Timothy Sipples
> Sent: Sunday, May 16, 2010 5:26 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: Benchmarking the IPL
>
> Tom,
>
> I'm a little confused by your question. Reading between the lines, you
> seem
> to be de
As a general statement (IPL is primarily I/O-bound), I agree, especially
when considering only z/OS. But over time that's probably becoming less
true. For example, WebSphere Application Server (on any platform) has
certain CPU demands (which can include zAAPs) to get going, especially with
certain
Tom,
I'm a little confused by your question. Reading between the lines, you seem
to be describing IBM's standard Capacity Backup (CBU) offering as part of
your contract. CBU covers both actual disasters and a certain number of
rehearsals over the contract period. There are no additional IBM softwa
Greetings,
Generally speaking as I understand it CPU capacity is not a major factor in the
duration of an IPL. It is mostly IO bound.
Have you checked out the following somewhat recent IBM Redbook?
System z Mean Time to Recovery Best Practices
http://www.redbooks.ibm.com/abstracts/sg247816.htm
>I'm debating with management right now on the distance between our data
centers being too close and I'm collecting information from anyone I can talk
to about how far apart others have their's.
I've worked at two shops, and they were at (potential) extremes.
One had the primary just north of Tor
Jeffrey Deaver wrote:
>I'm NOT looking for a mass response on data center distances.
Only one mass response from me: If there is a fence between the two data
centers, then they are too NEAR !!! ;-D
Is it already Friday?
Groete / Greetings
Elardus Engelbrecht
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Benchmarking the IPL
05/14/2010 09:13
My management wants to benchmark the IPL process to see how long it will
take at various levels of MIPS, MSUs, or whatever measurement criteria
can be used. The purpose of this is to determine what the smallest z10
is we can contract for our DR site that will IPL in a reasonable time
frame. The
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