RE: Data Corruption / 400

And I've been midrange (S/3, 34, 36, 38, 400) since 1980 (oh boy now do
I feel old!!!)

Mark Allen
I.S. Manager
Wilkes Telephone & Electric
A Dycom Company
Phone: (706) 678-9565
Email: allenmark@nu-z.net
http://www.nu-z.net




:-----Original Message-----
:From: midrange-l-admin@midrange.com
:[mailto:midrange-l-admin@midrange.com] On Behalf Of Mark Allen
:Sent: Monday, April 08, 2002 4:37 PM
:To: midrange-l@midrange.com
:Subject: RE: Data Corruption / 400
:
:
:The only tiem I know of was on a 24x7 (hospital) S/38 that got
:hit hard by lightning during a peak usage period.  After power
:restored system took around 48 hrs to IPL (rebuilding access
:paths).  Once that was done there were some (lee than 10 IIRC)
:damaged objects (user files) that had to be srestored from tape.
:
:Mark Allen
:I.S. Manager
:Wilkes Telephone & Electric
:A Dycom Company
:Phone: (706) 678-9565
:Email: allenmark@nu-z.net
:http://www.nu-z.net
:
:
:
:
::-----Original Message-----
::From: midrange-l-admin@midrange.com
::[mailto:midrange-l-admin@midrange.com] On Behalf Of MacWheel99@aol.com
::Sent: Monday, April 08, 2002 3:29 PM
::To: AS400 & iSeries & family discussion group;
::starbase_club@bigrivers.com
::Subject: Data Corruption / 400
::
::
::Has anyone EVER suffered data corruption on their 400
:business :data bases or ever heard of it happening for some
:reason other :than failure of hard drives, damaged objects,
:human error, :software bugs, PC user in middle of doing some
:update & the :connection gets lost & the software was not
:written good :enough to recover from that scenario, malicious
:activity like :hacker or someone who lost their job & took
:improper action?
::
::Feel free to reply to me off list about this.
::
::I have a collegue who is in a heated discussion on in some
::list in the PC Windows Macintosh world.  They apparently take
::it for granted that reality is that there are operating
:system :crashes all the time that scramble business data.  My
:friend :says that in his many decades experience in the IBM
:world, :this has NEVER happened there.
::
::These Microsoft enthusiasts are flatly disbelieving him ...
:it :must be a fluke for him.  So he looking for a quick poll
:... :how many years experience someone in IBM 400 & its
:predecessor :platforms & how many times has this happened to
:you?  So that :he can then say to these guys ... well X people
:in the 400 :community who said they have Y aggregate years
:have only heard :of this happening however many times.  So if
:it is a fluke, :here is how many other people are having that fluke.
::
::In my personal over 40 years in this world, it has only happened once.
::
::We got our % disk space utilization significantly above 100 %
::by accident, during our Y2K conversion in 1998, primarily
::because our estimates for disk space needed for multiple
::Pilots & conversion efforts were too low, related to OS/400
::math being off on what the M36 was taking, a lot of stuff was
::weird.  We didn't care to spend any time figuring it out.
:Our :goal was to fix it & fast, which we did.  The problem was
::discovered one day.  We got it below 100% in less than 24
::hours, identified corrupted data & recovered it from our backups.
::
::I also remember a hard disk failure from old age ... it was a
::13 years old IBM hard drive & IBM's mean time to failure was
::10 years.  IBM helped us map the hole in the drive, so we
::could work around it, such as backups of everything except
:the :software that straddled the hole.  No business data was lost.
::
::In 1984 at another employer there was a power outage that
::damaged some IBM OS objects on our hard drive, and damaged
::some parts of the hard drive.  This was on a S/34 at a 24x7
::company & it took a week for IBM to do the repairs. Basically
::the business continued running with us not doing some tasks
::like compresses, and 100% of the damaged objects were replaced.
::
::MacWheel99@aol.com (Alister Wm Macintyre) (Al Mac)
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