I have the ASUS P5BV-E / SAS motherboard, which as anyone who has read up on SAS/SATA support knows, works great with VMware ESX v3.5. But, what has me scratching my head is that 3.5 installs, allows me to create a VMFS and deploy VMs even though I only have 1 SATA drive connected to the ICH7R controller (I'm not even using the SAS controller!). In the dmesg output below, you can see that the SAS controller is scsi5 and has no devices attached. While scsi4 is my AHCI Intel controller with a lone disk attached. Am I the only one that did not expect this to work? Does this mean that any ICH7R board w/ a support NIC will run ESX? That would let you pick up $80 motherboards and run ESX.
scsi4 : ahci
Vendor: ATA Model: ST380013AS Rev: 3.43
Type: Direct-Access ANSI SCSI revision: 05
VMWARE SCSI Id: Supported VPD pages for sda : 0x0 0x80 0x83
VMWARE SCSI Id: Device id info for sda: 0x2 0x0 0x0 0x18 0x4c 0x69 0x6e 0x75 0x7
8 0x20 0x41 0x54 0x41 0x2d 0x53 0x43 0x53 0x49 0x20 0x73 0x69 0x6d 0x75 0x6c 0x6
1 0x74 0x6f 0x72
VMWARE SCSI Id: Id for sda 0x20 0x20 0x20 0x20 0x20 0x20 0x20 0x20 0x20 0x20 0x2
0 0x20 0x34 0x4d 0x52 0x31 0x5a 0x41 0x37 0x42 0x53 0x54 0x33 0x38 0x30 0x30
VMWARE: Unique Device attached as scsi disk sda at scsi4, channel 0, id 0, lun 0
Attached scsi disk sda at scsi4, channel 0, id 0, lun 0
SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB)
sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 >
scsi5 : mptscsi_2xx