Re: [linux-lvm] Will LVM2 ever be able to do striped mirrors "raid 10"? >>> Use HARDWARE RAID CONTROLLERS

["Mark H. Wood" <mwood@IUPUI.Edu>]

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On Thu, Apr 09, 2009 at 12:45:13PM +0100, Bryn M. Reeves wrote:
> On Thu, 2009-04-09 at 09:17 +0200, Axel Werner wrote:
> > also working good with linux are LSI Logic MEgaRaids. BUT... they dont 
> > support GNU Linux , only RH Enterprise and Suse Enterprise are 
> 
> What are you talking about? The megaraid driver has been in the kernel
> for years now. It's been a very long time since you had to use
> out-of-tree modules for these cards (even if the vendors still provide
> their own packaged binary modules).

He probably is referring to the userland tools for managing the
controllers, which are useless on most distros.  Which makes the
hardware much less valuable, since you have to down the system and get
into the adaptor's BIOS just to look at it, let alone adjust it.  See
for example *any* HP storage or system-management product.  The tools
will not even load -- they depend on versions of libstdc++ that do not
and will never exist in most distros.

The megaraid (and cciss) drivers *have* been in-kernel for a long time
now and *do* work well -- once you get the adaptor set up from BIOS.
As long as you're happy to set-and-forget, they are good choices.

-- 
Mark H. Wood, Lead System Programmer   mwood@IUPUI.Edu
Friends don't let friends publish revisable-form documents.

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