Only local SAS storage is supported with Oracle VM Manager. Oracle VM Release 3.3 does not support shared SAS storage (SAS SAN), meaning SAS disks that use expanders to enable a SAN-like behavior can only be accessed as local storage devices. Oracle VM Manager recognizes local SAS disks during the discovery process and adds these as Local File Systems. SAS SAN disks are ignored during the discovery process and are not accessible for use by Oracle VM Manager.

It is possible to determine whether SAS devices are shared or local by running the following command:

# ls -l /sys/class/sas_end_device 

Local SAS:

lrwxrwxrwx 1 root root 0 Dec 18 22:07 end_device-0:2 ->\
 ../../devices/pci0000:00/0000:00:01.0/0000:0c:00.0/host0/port-0:2/end_device-0:2/sas_end_device/
   end_device-0:2
lrwxrwxrwx 1 root root 0 Dec 18 22:07 end_device-0:3 ->\
../../devices/pci0000:00/0000:00:01.0/0000:0c:00.0/host0/port-0:3/end_device-0:3/sas_end_device/
  end_device-0:3

SAS SAN:

lrwxrwxrwx 1 root root 0 Dec 18 22:07 end_device-0:0:0 -> \
../../devices/pci0000:00/0000:00:01.0/0000:0c:00.0/host0/port-0:0/expander-0:0/port-0:0:0/
  end_device-0:0:0/sas_end_device/end_device-0:0:0
lrwxrwxrwx 1 root root 0 Dec 18 22:07 end_device-0:1:0 -> \
../../devices/pci0000:00/0000:00:01.0/0000:0c:00.0/host0/port-0:1/expander-0:1/port-0:1:0/
  end_device-0:1:0/sas_end_device/end_device-0:1:0

For SAS SAN storage, note the inclusion of the expander within the device entries.

Bug 13409094