Accessing SCSI-Devices >2TB

[Kenneth D. Merry]

On Mon, Jun 13, 2005 at 12:19:15 +0200, Raphael H. Becker wrote:
> PS+BTW: any idea why the internal PERC is not listed in camcontrol devlist?
> 
> In dmesg its listed like
> aac0: <Dell PERC 3/Di> mem 0xf0000000-0xf7ffffff irq 30 at device 8.1 on pci4
> aac0: i960RX 100MHz, 118MB cache memory, optional battery present
> aac0: Kernel 2.7-1, Build 3170, S/N 5410d3
> aac0: Supported Options=75c<WCACHE,DATA64,HOSTTIME,WINDOW4GB,SOFTERR,NORECOND,SGMAP64>
> [...]
> aacd0: <RAID 5> on aac0
> aacd0: 69425MB (142182912 sectors)
> 
> pciconf:
> aac0 at pci4:8:1:  class=0x010400 card=0x01211028 chip=0x000a1028 rev=0x01 hdr=0x00
>     vendor   = 'Dell Computer Corporation'
>     device   = 'PowerEdge 3/Di Expandable RAID Controller'
>     class    = mass storage
>     subclass = RAID
> 
> It's not SCSI?

It is a SCSI RAID controller, but the interface to the OS is a block
interface, not a SCSI interface (*).  It isn't routed through the SCSI
layer, since that wouldn't really help it that much.

(*) There is a SCSI passthrough interface for some aac controllers that
can be enabled via the aacp driver.

Ken
-- 
Kenneth Merry
ken at FreeBSD.ORG