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Re: [MISC] Cost of patching ...



On Tue, 24 May 2005 06:59:07 +0200
Stig wrote:

> En anden parameter mht. omkostninger er eksemplet med
> 'stordriftsfordele'. Det er blevet populært inden for især
> staten, at benytte citrix i den tro, at citrix er svaret på alt.
> Det er det ikke. Citrix blev i stor udstrækning brugt i
> forbindelse med udrulning af Navision Stat, alene af den grund,
> at det var den *eneste* mulighed for at køre Navision over WAN.
> I forbindelse med centralisering af udstyret, får man også ry
> single point-of-failure. Jeg kender et ministerium, hvor der
> eks. var nedbrud 2 hele dage inden for 14 dage. Regnskabschefen
> anslog omkostningerne til ca. 1 million/dag, altså lige 2 mill.
> oven i driftsudgifterne.

Det er meget interessant, dette eksempel. Den anslåede udgift er
selvfølgelig svær at kontrollere, men mandens "fornemmelse" er
forhåbentligt baseret på viden om de totale lønudgifter pr.dag,
omkostninger ved forsinkelser, samt eventuelle tab på
renteudgifter ved forkert placering af indkommende kasseflow eller
lignende.

Derfor synes jeg, at det er vigtigt at grave i spørgsmålet om,
hvor gode/dårlige systemernes pakke-håndtering er. Du må undskylde
hvis forrige posting ikke skelnede mellem pakkehåndtering og
installation, jeg er godt klar over at der er stor forskel.

Det andet input, vi har fået til denne tråd, er vigtigt: Ikke alle
Linux folk mener at man kan erstatte desktoppen MSXP (eller
MS-Windows®-XX) med Linux/Gnu.

Derfor synes jeg at det er vigtigt at fremhæve, at en enkelt mand
med rigtig forståelse af system-funktionalitet kan holde
Linux-desktoppen i luften i endog særdeles stabil form. Men det
kræver central styring af installationen og "at man ved hvad man
gør".

Hvis samme ressourcer bliver anvendt på MSXX-platforme, så siger
flg. skribent at begge system-typer kan håndteres effektivt uden
at det tager meget tid:

Windows Patching: Cheaper
than Open Source?

Opinion: And if you believe that, Microsoft has a nice bridge in
Brooklyn it would like to sell you.

[[ Se videre på:

http://www.eweek.com/article2/0,1759,1818516,00.asp   ]]

Nevertheless, these 'analysts' conclude from their survey of 90
companies that even though Windows systems require more patching,
it's easier and cheaper to patch Windows than it is to patch
open-source software.

Really?

I have twenty-four systems in-house and they're equally divided
between Windows and Linux systems. I use automated tools to update
both of them. I see very, very little difference between them in
upgrading either one.

On the Windows side, I use Microsoft's System Management Server
and SUS (Software Update Services) and Shavlik NetChk Patch. For
the Linux boxes, I use SuSE YAST, a late beta of ZENworks for
Linux 7, Red Hat Network and Ximian Red Carpet Server.

Click here to read more about ZENworks 7 Linux Management.

The only reason I use so many programs is that I'm in the business
of testing technology to a fare-thee-well. If I were just running
a business, I'd use the Shavlik program and ZENworks.

If I wanted to, I could also use such basic Linux programs as
Apt-get and Cron to make scripts to automatically update my
systems. Net cost: $0.

But, here's the truth of the matter: Simply patching either
operating system is trivial if you know what you're doing. Period.

[ ... cut ... ]



-- 
donald_j_axel donax snabela get2net.dk -- http://d-axel.dk/


 
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