We haven't had an Image structural corruption (as opposed to logical
corruption due to Cobol bugs) since the 80s. Last case was a messed-up
pointer before HP came out with ILR. Don't remember exactly when that was, but
I do remember that we were hoping ILR would prevent future problems and kept
waiting & waiting to see if there would be any. Still waiting, even though
IRL is now off.
Dave Powell, MMfab
----- Original Message -----
From: "Penney, John" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, August 13, 2004 14:34
Subject: Re: [HP3000-L] OS-XM-Image Reliability VS Other OS Platforms Solu
tions
> Art, Reid, Wirt et al: All that being said and caveat emptor, I have known
> sites that
> a) do(did) not know about Image logging, and
> b) have been running since time immemorial, without same with no discernable
> problems.
>
> Of course, shadowing and logging are good, really good things, mind you,
> esp. shadowing, but all that being said, with a good backup strategy you
> probably won't have an Image failure of any significance for a long time,
> maybe a decade?
>
> John (Shooting from the hip) Penney in Sacto
>
> -----Original Message-----
> From: Art Bahrs [mailto:[log in to unmask]]
> Sent: Friday, August 13, 2004 2:16 PM
> To: [log in to unmask]
> Subject: Re: [HP3000-L] OS-XM-Image Reliability VS Other OS Platforms
> Solutions
>
>
> Hi Reid,
> Well, first of all, I think the question you are working on is what is
> the risk to the organization of running without logging versus with logging
> on a image database.
>
> Second, the answer is 'It Depends' :)
>
> Wirt's answer is excellent tho' and definitely provable...
>
> The calculation of the risk is based on the exposure, type of data,
> country where the data physically resides, the facility housing the
> mechanisms holding the data, the backup strategies used and so on... you get
> the idea :)
>
> That all said... I would answer that the Risk is infinitly greater
> without logging than with... (assumption here is there is no form of
> shadowing going on...)
>
> Art 'it must be Friday... I am way too flippant for anyother day of the week
> hehe " Bahrs =======================================================
> Art Bahrs, CISSP Information Security The Regence Group
> (503) 553-1425 FAX (503) 553-1453
>
>
> |---------+-------------------------------->
> | | "Reid E. Baxter" |
> | | <reid_e_baxter@bankon|
> | | e.com> |
> | | Sent by: "HP-3000 |
> | | Systems Discussion" |
> | | <[log in to unmask]
> | | DU> |
> | | |
> | | |
> | | 08/13/2004 01:17 PM |
> | | Please respond to |
> | | reid_e_baxter |
> | | |
> | | |-------------------||
> | | | [ ] Secure E-mail ||
> | | |-------------------||
> |---------+-------------------------------->
>
> >---------------------------------------------------------------------------
> -----------------------------------------------|
> |
> |
> | To: [log in to unmask]
> |
> | cc:
> |
> | Subject: [HP3000-L] OS-XM-Image Reliability VS Other OS
> Platforms Solutions |
>
> >---------------------------------------------------------------------------
> -----------------------------------------------|
>
>
>
>
> I must admit I am quite dumb founded that no one has apparently ever
> conducted a study of the reliability of the HP3000 Turbo Image database as
> compared to other OS based offerings as I did not receive one reply.
>
> In an effort to solicit any replies, I would like to put forth a another
> question to the list, how many times have you encountered an irrecoverable
> database corruption situation versus the number of years your experience
> covers ?
>
> I am attempting to surmise the 'vulnerability' of a Image database without
> logging as opposed to one with logging.
>
> Regards,
>
> Reid E. Baxter
>
> ----- Forwarded by Reid E Baxter/OH/ONE on 08/13/2004 04:07 PM -----
>
>
> Reid E Baxter To:
> [log in to unmask]
> cc:
> 08/12/2004 01:48 Subject: OS-XM-Image
> Reliability VS Other OS Platforms Solutions
> PM
>
>
>
>
>
> Has anyone done a study of the reliability of the 'all in one' vendor (HP)
> solution versus other OS platforms and their respective transaction managers
> and third party databases ? I am currently attempting to explain to
> individuals that are not HP3000 literate the differences. Any input would be
> appreciated. I am specifically looking for reliability percentages if
> possible. Thank you in advance.
>
> Regards,
>
> Reid E. Baxter
>
>
>
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