[ale] ATL Colocation and file server suggestions

[Ed Cashin]

On Mon, Jan 19, 2009 at 9:19 PM, Jim Kinney <jim.kinney at gmail.com> wrote:
> On Sat, Jan 17, 2009 at 3:43 PM, Ken Ratliff <forsaken at targaryen.us> wrote:
>
>> I do not recommend doing software RAID5 though, get a proper card.
>
> Ditto! Software RAID5 is bad. If RAID5 is required, use a hardware RAID card.

There is a funny FAQ about hardware RAID.

  http://linux-ata.org/faq-sata-raid.html

Some cards make the host CPU do the work.  Unfortunately
the term "hardware RAID" has been abused.  The important
question is whether the CPU of the machine using the RAID
has to do the math or not.

Well, an equally important question is probably whether the
on-disk data format is secret or not.

-- 
  Ed Cashin <ecashin at noserose.net>