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124 Chapter 3 Preparing for CCI Operations
5. Lun sharing between Guest and Host OS. It is not supported to share a command device
or a normal Lun between guest OS and host OS.
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 CCI user will be able to run CCI by installing “CCI for Linux” on SVC. The
volume mapping (/dev/sd??) on SVC is a physical connection without converting SCSI
Inquiry, so CCI 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 CCI user must enable a PORT for CCI (HORCM) using the
“iptables” command.
3.1.4.2 Restrictions on AIX VIO
Whether CCI 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. Figure
3.4 sh
ows CCI configuration on AIX VIO client.
Hitachi RAID
Storage System
-CM
HBA
Hypervisor
System P
VIO Client
CCI#0 CCI#1
vscsi
-CM
Command device
For CCI #1 and #2
Command device
for other
VIO Server
vscsi
Figure 3.4 CCI Configuration on VIO Client