[mythtv-users] Bad News for me...a warning to all

Jarod C. Wilson jcw at wilsonet.com
Fri Apr 23 19:04:07 EDT 2004

Hash: SHA1

On Friday 23 April 2004 12:38, Sean wrote:
> 1 word.
> 3Ware

Copy that.

> Ed Benckert wrote:
> > Software Raid 5 offers terrible performance... its ok for word documents
> > and the like, but theres no way the cpu/drives will keep up with the
> > demand of streaming continious MPG data to the drive, as well as reading
> > it back at the same time.

All I can say is "works for me". I have a 5x120GB software RAID-5 array that 
handles just fine, streaming music and movies out all over the house. 
Granted, its not often I'm writing to it, but I see nary a hiccup writing to 
it (new divx rips ;-) while streaming data off it simultaneously. The CPU in 
this box is just an Athlon 800, and utilization hasn't ever been a problem... 
That said, a true hardware RAID card is definitely better, if you can afford 
it. Even better, get SCSI drives, if you can afford it.

Say, you didn't by chance have multiple HDs per channel in the situation where 
you said software RAID-5 offered terrible performance, did you? That'll 
destroy performance...

> > It's expensive, but a beautiful solution: Promise Technology Raid 5 ATA
> > controller cards. Here's a link to one:
> >
> > http://www.cluboverclocker.com/reviews/raid/sx4000/
> >
> > That is a 4 channel/4 drive card. I have the 6 channel/6 drive card.
> > It's a true hardware raid solution for ATA100/133 drives. I paid $250
> > for mine.

"Expensive" is a relative term, of course. That's dirt-cheap compared to a 
good SCSI RAID card... ;-) I might as well mention that my friend got that 
same card for about $150 off eBay a few months back.

- -- 
Jarod C. Wilson, RHCE
jcw at wilsonet.com

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