Please forgive my sloppy usage of the term "down time". I should have used 
outage.

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of Styles, Andy (ITS zPlatform Services)
Sent: Thursday, April 26, 2018 10:15 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: [EXTERNAL] Re: z/OSMF, was How far out of date are my skills

Classification: Public
Is it outage, rather than downtime? (ie, unexpected)

Can't shutdown and IPL in 315 seconds.. (well, we can't).

Andy Styles
z/Series System Programmer

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of Tom Marchant
Sent: 26 April 2018 16:06
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: [EXTERNAL] Re: z/OSMF, was How far out of date are my skills

-- This email has reached the Bank via an external source --


On Thu, 26 Apr 2018 14:00:37 +0000, Allan Staller wrote:

>(z/OS) claims "six nines" of availability (99.999999%;

That would be eight nines. Do they talk about six nines now?
I remember 5 nines, or available 99.999% of the time. That corresponds to about 
315 seconds of down time per year, by my calculations.

--
Tom Marchant

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