ZFS on a single disk?

[Dr Josef Karthauser]

On 2 Mar 2011, at 00:16, Jeremy Chadwick wrote:

> Do not disable the ZIL.  I hate referring to the Solaris documentation
> for FreeBSD, but it applies:
> 
> http://www.solarisinternals.com/wiki/index.php/ZFS_Evil_Tuning_Guide#Disabling_the_ZIL_.28Don.27t.29
> 
> And you cannot disable the ARC, so just tune it appropriately (which
> you'll need to do on FreeBSD anyway).  In fact, by getting rid of the
> ARC (as you proposed), you would suffer worse performance than if you
> had it in use.

I guess I should have been a bit clearer, I mean without any external devices backing them. Seeing as this is to be running on a VPS/Xen at a hosting environment I'm not able to add any additional devices. I'm not memory starved however. Is it madness to use a memory disk? (The instance in question will have 6gb of ram total to play with.).

Joe