Dell R610 boot from iSCSI

Hello!

I try to install XenServer 6.1 in to iSCSI LUN, I successfully configured Broadcom BCM5709C Network Adapter to boot from iSCSI, but when I start to install XenServer an error occurs, that installation can' t find disk:

When I try to install CentOS 6.3, same error.

I try to install Windows 2008 R2 and it can find drive and successfully install it.

So it looks like linux installations can' t find hard drive, how I can solve this problem?

iSCSI LUN is configured on NetApp storage.

Thanks!