>What is RAID-1? Will writing to two disks increase write speed?
becuase we requires Redundancy, we can bear some slow speed.
>what is sdc1 doing? Is it also mirroring or is it just sitting
>there in case one of the other disks fail? ......most businesses
>hate to buy that one extra disk if you don't demonstrate that you
>need it.
yes its just sitting there in case one of the other disks fail
(becuase we need redundancy/fault-tolerance/ and 0 downtime)
>In general we frown upon homework questions, though..
As we are in the phase of migration from M$ Windows Server based
Email Server(Mailer Deamon) to OpenSuSE 10.3 and Postfix, and thats
the reason I am planning and asking(posting) so that within 36 hours
time, in the light of recommendations I'll implement the best for my
enterprise.
Scott <[EMAIL PROTECTED]> wrote:
>
> On Sun, Dec 16, 2007 at 12:49:13PM +0000, ibnerazi wrote:
> > I am new to Linux and very new to the RAID world.
> >
> > For a small-to-midrange(80-195 users) enterprise suggestions and
> > recommendations are required for the following
> >
> > 1) Mail Server(Postfix)
> > 1a) what would be the best and recommended RAID-level(1 or 5) of
the
> > volume for the Linux OS ?
> > 1b) what would be the best and recommended RAID-level(1 or 5)
for
> > the volume that contains user's mailboxes ?
>
> This looks VERY much like a homework question, so I'm going to give
> homework help (as opposed to doing it for you) type answers.
>
> >
> > I am sharing my own plan
> > for (1a)
> > Linux OS "/" raid-level 1: /dev/md0
(/dev/sda1, /dev/sdb1, /dev/sdc1)
> > here /dev/sdc1 is spare
>
> Why? Remember your last sentence, speed is more important than
> redundancy. What is RAID-1? Will writing to two disks increase
write
> speed?
>
> Also, what is sdc1 doing? Is it also mirroring or is it just
sitting
> there in case one of the other disks fail?
>
> I would ask the same question about your second choice (which I'm
> snipping, as it's basically the same answer.)
>
> Note what you wrote here....
>
>
> > for my enterprise speed(read/write) is more important then
> > redundancy.
>
> Another clue that it is probably a homework question--most
businesses
> hate to buy that one extra disk if you don't demonstrate that you
need
> it.
>
>
> Note to posters for the future. In general we frown upon homework
> questions, though if you say, I have this and I'm lost in figuring
out
> the reason, many people will help. We are also, in general,
> understanding when your boss suddenly requires something which you
don't
> know how to do. Generally speaking, honesty about the situation
is more
> likely to get an answer, since many of us stay on these lists
because we
> like helping people.
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