BIND/SMTP/DHCP Server sizing/Operating system question
Brad Knowles
brad.knowles at skynet.be
Mon Jun 11 16:46:38 UTC 2001
At 9:58 AM -0600 6/11/01, Randy Adams wrote:
> 1) can/should I provide these 3 services on one box?
Technically, yes. However, this is not the way to build a
robust, highly available, and scalable system. You're much better
off separating these tasks onto separate sets of machines dedicated
to performing each role, etc....
> 2) *If it were you*, would you fork out for a commercially supports hw/sw
> combo, or would you 'trust' Linux?
Depends on the application.
For example, if this was for a highly classified system to
provide remote support for operational special forces units in the
field, and there were literally many lives depending on the thing
working 100.00000000% correct 100.000000000% of the time (some of
whom could take failures personally, and then decide to hold you and
your family personally responsible), then I would make damn sure that
I spent as much money as needed to get completely redundant systems
with fail-over guarantees, and every other single ounce of
reliability I could possibly get. Whomever the presidents & CEOs
were of the various companies involved, I would make sure that they
all had tamper-proof remote detonation devices attached to their
genitalia, and I would be the only one with the necessary access
methods to press the buttons.
If this was for a large financial institution, with tens of
trillions of dollars under management and hundreds of billions of
dollars of daily turn-over, I would likewise spend very large
quantities of money to ensure that the possibility of even a
momentary failure would be reduced to many positions to the right of
the decimal point.
If this was for a University, where there are going to be lots of
kids and faculty members playing around on the system and doing
${DEITY}-only-knows-what, and where your personal daily lunch budget
compares favourably with their annual IT budget, then I'd probably be
willing to use FreeBSD, OpenBSD, or some other freely available OS
that I really trusted to do the job right, with a minimum of cost.
Obviously, depending on your particular situation, you might fall
somewhere between some of these examples.
> 3) Any reccomendations on processor/ram/disk requirements
You haven't told us enough about the application. Without a lot
more detail, there's absolutely no way of knowing what kind of
performance you might need, how much RAM you might need, etc....
> 4) What version on Bind is the most sercure/stable?
I would say that this would be BIND 9.1.2-REL or the latest
release candidate for 9.1.3, and shortly this should be 9.2.0.
--
Brad Knowles, <brad.knowles at skynet.be>
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