On Tue, 2 May 2000, Ard van Breemen wrote:
> Consider this:
> How are you going to setup and initialize, say, ehh 600 systems with these
> raid controllers?
About the same way I would set up and manage 600 systems anywhere. I
would pull my hair out, but probably get it done. :)
> Using the megamgr? That is a joke! (Actually we wrote some megamgr ourselves
> that understood scripting, fixed a bug on the way in the megaraid.c)
> > This card appears to have 128mb of DRAM, and so far, it seems to be
> > very fast...
> > I don't want my cpus busy chugging around computing parity and repairing
> > the data when a drive goes down. I'd rather let the hardware controller
> > handle that.
> So you actually tried and COMPARED the speed difference, comparing disk
> speed as well as cpu speed?
Yes. Before I used the megaraid, I wanted to be sure everything was
sane.
> It seems either I need a VERY expensive raidcontroller to get my quad xeon
> to do something, or I get my quad xeon to do something, and improve
> overall system speed.
> > Just an opinion, but for me hardware raid seems to work fine.
> Don't think I'm attacking you on your experiences. Raid seems to work for
> you. But if you're system is slow and idle, you really need to consider
> soft-raid. (And need a good look at the required drivers...)
>
> But I'm going to take a look at this power-edge 6300...
> One question: does it do around 20...30 MB/s block read/write
> (using Bonnie++)?
> --
I just got it in and running after all my playing around. I'll give
bonnie a whirl to see what it can do, once I get the rest of the cluster
(Beowulf 8xquad xeon with this 6300 as the front-end, which will be busy
doing lots of compiles as well as running as the 9th node.
> intel1: 3:39pm up 17:02, 2 users, load average: 1.05, 1.02, 1.00
>
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