Hi,
I have Windows XP and in my BIOS I see S-ATA configuratio.
I'd like to know if it is better put P-ATA or S-ATA or P-ATA + S-ATA
mode. I have IDE HDs.
Thanks
bye Fogar
The Promise PDC20378 offers three interfaces. There is a ribbon cable
which can be connected to two parallel (PATA) drives and there are
two serial ATA connectors, which can take one drive each.
If you currently have IDE drives with ribbon cable connectors, you
can buy an adapter, to convert the drive from PATA to SATA. That would
allow you to use the IDE drives on the SATA interfaces.
RAID 0,1,0+1 -------------------------- PATA Master Drive
| | |
| | + ----------- PATA Slave Drive
| |
| +---------------------------- SATA Drive (one per cable)
|
+------------------------------- SATA Drive (one per cable)
If your drive or drives are currently connected to the PATA ribbon
cable, then just enable PATA. What you enable depends on where
the drives are connected.
There could be a slight performance advantage to spreading the drives
out, but if the chunk size of the array is small enough, then the
transfer rate across the ribbon cable will be at its maximum, due
to the write cache on the disk drives themselves. In other words,
when two PATA drives share a ribbon cable, the transfer can still be
fast due to the use of cache ram on the disk drives themselves.
HTH,
Paul
