tiny firewall boxes

[D. Hugh Redelmeier]

| From: Tyler Aviss <tjaviss-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org>

| IDE->CF adaptors work nicely too.

| The adaptors are on ebay for peanuts, but one has to beware the
| female/male pinnings as some have to plug into the motherboard, while
| others run on a standard IDE cable (sometimes you may need a
| 3.5"->2.5" HDD adaptor too for cable size).

Some adapters do DMA and some don't.  You want DMA (costs no more).

Some CF cards do DMA and some don't.  You probably want DMA (may cost
more).

Some CF cards have SLC (single-level cells) and some have MLC
(multi-).  SLC is more expensive, faster, and allows way more write
cycles.

Wear-leveling capabilities of CF cards are not documented but matter.

Mark Lord gave a nice presentation at the Linux Symposium about using
a RAM disk to speed up this kind of setup.  During his talk, I
actually dropped his scripts onto my notebook running Ubuntu 9.04.
They worked with no tweeking (except for adding a grub entry).
  http://www.linuxsymposium.org/2009/view_abstract.php?content_key=72

The proceedings should appear online soon (this was expected a few
days ago so I might be looking the wrong place). Since this was a
tutorial it might not be included.
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