Joerg Schilling wrote: > Jürgen Keil <[EMAIL PROTECTED]> wrote: > > > On some boards you can also change the configuration of the > > s-ata controller to p-ata "legacy ide" (instead of ahci mode). In > > legacy mode, Solaris should be able to find both the (s-ata) disks > > and the (s-ata) optical device. > > What is the disadvantage from the legacy mode?
- no cfgadm_sata support, so you can't disconnect/connect/configure/unconfigure s-ata devices while the kernel is up and running - no native command queing - no s-ata port multiplier support - afaik: zfs is unable to read a s-ata hdd's SMART data, so things like automatic replacing a failing s-ata disk with a hotspare probably doesn't work (I guess that could be added to the ata driver) - it seems some sata controllers support dma access to memory >= 4GB, so the kernel doesn't have to use bounce buffers. The ata driver can only access 32-bit addresses via dma. _______________________________________________ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
