[mythtv-users] How is this pricing possible?

[John Drescher]

> That's pretty good; my experience with parity RAID has been with hardware
> RAID controllers where the write performance has been truly miserable (a few
> 10s of MB/s). Yet another example of how the embedded processors used in
> most hardware RAID controllers have fallen behind software RAID running on
> the main CPU (providing you have a core to spare).
>
The main problem there is if you do not have the battery backup unit
most HW controllers do not use a stripe cache. And thus every write
that is less than 1 stripe will require a read, update then a write of
the stripe. This will totally kill performance.

John