[Beowulf] hardware RAID versus mdadm versus LVM-striping

Rahul Nabar rpnabar at gmail.com
Sun Jan 17 19:53:04 PST 2010

On Sun, Jan 17, 2010 at 9:36 PM, Joe Landman
<landman at scalableinformatics.com> wrote:
> Ohhh ... it depends.  Some of the "vendors" hardware raid ... heck ... most
> of it ... is rebadged LSI gear.  Usually their lower end stuff which is
> sometimes fake-raid.  Use fake-raid only if no other options exist.

Thanks Joe! What's "fake RAID"? Just a bad implementation or...........?

> LVM is not a performance tool.  Use it to help you manage things, not speed
> things.

I had thought so. But why then does LVM have features like striping if
not for performance? Or are they just not so good?


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