[mythtv-users] Wishlist feature for adding a hard drive

[Kevin Hulse]

On Thu, Oct 05, 2006 at 10:50:15PM +0100, Stephen Boddy wrote:
> On Thursday 05 October 2006 20:15, Andrew Davis wrote:
> > > While that may be true, the main point I'm getting at is that RAID5 won't
> > > improve write speeds, because instead of a single write to a single disk,
> > > there are at least two reads, a calculation (however short), followed by
> > > two writes. (Obviously this is ignoring caches/buffers etc.)
> > >  
> >
> > So you get a h/w RAID controller with good Linux driver support... such
> > as the older ICP Vortex (not Intel owned) cards or an AMI MegaRAID (now
> > LSI)... though there's also SATA versions available from Adaptec and
> > Promise with Linux support.
> 
> Absolutely. I would love one, but they cost quite a lot for home users hence 
> the tendency among hobbyists/home users toward software RAID, and thus my 
> highlighting the incorrect blanket statement regards RAID5 write speeds.
> 
> Here in the UK an 8 port SATA hardware RAID card will set me back around £400 
> (~US$750), and that's if I can find one that doesn't use some sort of server 
> slot (PCI-X).

	PCI-X is pretty common these days. For a newer system, this wouldn't
be much of a problem. PCI-X even comes on "blue light specials" these days.

	Still wouldn't want to shell out $400 or $750 for one though.

	That's worth over a terabyte of storage.