There is currently no native support for sata port multipliers in OpenBSD. Dragonfly has some code which could be adapted however.
On Mon, Jan 04, 2010 at 09:36:33PM -0500, nixlists wrote: > Hi. > > I have: > > sili0 at pci4 dev 0 function 0 "CMD Technology SiI3132 SATA" rev 0x01: > apic 3 int 8 (irq 11) > scsibus0 at sili0: 2 targets > > The manual page does not mention it, but I guess the driver does not > support port multipliers? It only detects one drive in my eSATA > enclosure. There are two drives configured as "JBOD". Connecting the > enclosure to a Windows or Linux box shows two drives.... I assume the > driver also somehow disables write cache on the disk by default - > judging by performance? I cannot disable write cache on this > enclosure's drives in either Linux, FreeBSD, or even Windows! It's > also a sili enclosure - Rosewill R2-RAID. > > SiI5744 Storage Processor > > http://www.siliconimage.com/products/product.aspx?pid=105 > > Which controller drivers support port multiplying for eSATA? Thanks.