OT 2nd posting pci ata card ??

[Dave S]

On Saturday 01 April 2006 20:28, Antony Gelberg wrote:
> Dave S wrote:
> > Hi all,
> >
> > This is a second posting because I could really do with some advice. I
> > have a raid HDD on hda and hdc, works a treat.
> >
> > I have a DVDRW on hdb, it works but cripples my system when I use it. I
> > need a workaround.
>
> Is DMA on for that drive?  If not, turn it on.  man hdparm.  It may well
> make a difference.  There's so much conflicting information about this,
> and most people who comment have no idea about how IDE or DMA work (me
> included).
>

Yep DMA is on, and the drives fly. i am happy with the RAID performance it is 
faster than a single drive (though not massively so)  but when i use hdb it 
all but locks up my machine.

Dave 

root at dave-comp:~# hdparm /dev/hda

/dev/hda:
 multcount    =  0 (off)
 IO_support   =  1 (32-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 20023/255/63, sectors = 321672960, start = 0
root at dave-comp:~# hdparm /dev/hdc

/dev/hdc:
 multcount    =  0 (off)
 IO_support   =  1 (32-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 20023/255/63, sectors = 321672960, start = 0
root at dave-comp:~#