Restrictions On Aix Vio - HP XP P9500 Configuration Manual

6. About running on SVC. The ESX Server 3.0 SVC (service console) is a limited distribution of
Linux based on Red Hat Enterprise Linux 3, Update 6 (RHEL 3 U6). The service console provides
an execution environment to monitor and administer the entire ESX Server host. The RAID
Manager user can run RAID Manager by installing "RAID Manager for Linux" on SVC. The
volume mapping (/dev/sd) on SVC is a physical connection without converting SCSI Inquiry,
so RAID Manager will perform like running on Linux regardless of guest OS. However, VMware
protects the service console with a firewall. According to current documentation, the firewall
allows only PORT# 902,80,443,22(SSH) and ICMP(ping), DHCP, DNS as defaults, so the
RAID Manager user must enable a PORT for RAID Manager (HORCM) using the iptables
command.

Restrictions on AIX VIO

Whether RAID Manager can function completely or not depends on how VIO client/server supports
virtual HBA(vscsi), and there are some restrictions in the case of volume discovery. The following
figure shows RAID Manager configuration on an AIX VIO client.
Figure 3 RAID Manager configuration on VIO client
The restrictions for using RAID Manager on AIX VIO are as follows:
1. Command device. RAID Manager uses the SCSI Path-through driver for accessing the command
device. Therefore, the command device must be mapped as RAW device of Physical Mapping
Mode. At least one command device must be assigned for each VIO Client. The RAID Manager
instance numbers among different VIO Clients must be different, even if the command is
assigned for each VIO Client, because the command device cannot distinguish between VIO
Clients due to use of the same WWN via vscsi.
2. LUN sharing between VIO Server and VIO Clients. It is not possible to share a command device
between VIO Server and VIO Clients, and a normal Lun also cannot be shared between VIO
Server and VIO Clients.
3. Volume discovery via vscsi on VIO Client. The inqraid command discovers the volume
information by using SCSI inquiry, but VIO Client cannot report the real SCSI inquiry (Page0
and Page83) as shown below.
Example for inqraid command:
lsdev -Cc disk | /HORCM/usr/bin/inqraid
hdisk0 -> NOT supported INQ.
hdisk1 -> NOT supported INQ.
16 Installation requirements
[AIX ] [VDASD
[AIX ] [VDASD
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