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When IBM i is implemented on JS12, there are two drives available on the blade for VIOS
installation. In a BladeCenter H, VIOS can be installed on one drive on the blade and mirrored to
the second; or installed entirely on the SAN. As with JS22, if VIOS is installed entirely on the
SAN, MPIO should be used. In a BladeCenter S, it is recommended to install VIOS on one drive
on the blade and mirror to the second. This allows the drives in the chassis to be used for IBM i.
Note that if mirroring is used, the correct method to achieve a redundant VIOS installation,
regardless of the type and location of disks used, is to install VIOS on one drive and then mirror
to the second. The incorrect method is to install VIOS on both drives at the same time. This
latter method would not result in two copies of all VIOS files and two bootable drives. Note also
that mirroring VIOS does not protect any IBM i or other client partition data; it protects only the
system volume group, or storage pool,
rootvg
.
Once VIOS is installed, use the following steps to configure mirroring:
•
Use the SOL console to VIOS and log in with
padmin
•
Identify a second available hdisk for the mirrored pair, such as hdisk1
•
Add that hdisk to the rootvg with
chsp –add hdisk1.
The command assumes rootvg
if a storage pool is not specified
•
Enable mirroring with
mirrorios –f –defer hdisk1
. When possible, reboot VIOS to
complete the mirroring. For an immediate reboot, omit the –defer option
The
mirrorios
command accomplishes three tasks: it creates a copy of all logical volumes
(except for the system dump volume) in rootvg on the second hdisk, makes the second hdisk
bootable and changes the VIOS bootlist to include it. Once mirroring is complete, you can verify
that all logical volumes in rootvg have a copy on both hdisks with:
•
lsvg –lv rootvg
. Check for the number 2 in the
PVs
column
You can verify that the VIOS bootlist now includes the second hdisk with:
•
bootlist –mode normal –ls
. The output should include both hdisks
5.3. Configure networking in VIOS (if necessary)
If you installed VIOS from a NIM server, basic networking is already configured.
If you installed VIOS from DVD, use the following steps to configure basic networking in VIOS:
•
Log into the VIOS console via the AMM using the
padmin
user profile
•
Use
the
lsdev
command to identify the correct network device. In most cases, the first
embedded Integrated Virtual Ethernet (or, Host Ethernet Adapter, HEA) port will be used
•
In that case, you can use a more specific command to find just the IVE/HEA ports:
lsdev
| grep hea
. You should see a result similar to:
ent0 Available Logical Host Ethernet Port (lp-hea)
ent1 Available Logical Host Ethernet Port (lp-hea)
lhea0 Available Logical Host Ethernet Adapter (l-hea)
•
In this example, the first IVE/HEA network port is
ent0
. The network interface that
corresponds to
ent0
is
en0.
The first IVE/HEA port on your blade may have a different
entX
device name
•
Use a command similar to the one below to configure the correct
enX
interface:
