udma or pio for raid?

[JEFF]

finally got my second drive,setup raid but not sure of a couple of settings.set drives to udma 5 because i wasn't sure of the correct setting.which is faster or compatible with my drives?pio4 or dma or udma5 or somthing else.setting up raid i lost all my bookmarked sites and cant find pauls unofficial to research this.if u can help with either i would be appreciative...oh i chose 32 bit size in raid(was guessing)is that correct?

 

[Tacoman667]

If your HDD's are ata/100, then set them for udma5. That means they are 100's, 66's are udma4. UDMA is much better then PIO1-4. CDROM's run on PIO's for older versions. The newer ones can go to the DMA or UDMA's. Hope this helps ya out.

 

[wild_andy_c]

the highest option in there - MODE 5 UDMA

 

[asmodean]

PIO4 is quite fast, actually. It just consumes huge amounts of CPU time, so it's a no no. UDMA is the way.

 

[JEFF]

thanx guys i did finnaly get a bios page to research and yall r right on!
i'm still not sure of block size but sandra says i should use smaller,i'm waisting disc space.

 

[asmodean]

If possible, try experimenting with the block size.
4096bytes is quite optimal for the current processors, as they store data in 4k pages.