50
6.5. IBM i on Power blade considerations and limitations
Consult the topic “Considerations and limitations for IBM i client partitions on systems managed
by the Integrated Virtualization Manager” in the IBM i Information Center:
http://publib.boulder.ibm.com/infocenter/systems/scope/i5os/topic/rzahc/rzahcbladei5limits.htm.
See also the topic “Limitations and restrictions for IBM i client partitions on systems managed by
the Integrated Virtualization Manager” in the
PowerVM Editions Operations Guide
, available at
http://publib.boulder.ibm.com/infocenter/systems/index.jsp?topic=/iphdx/abstract_pvme_guide.ht
m.
6.6. Moving the BladeCenter DVD drive to another Power blade
Section 5.2.1 explained how to initially assign the DVD-ROM drive in the BladeCenter to a Power
blade. When the blade is later powered on, the DVD drive device in VIOS (/dev/cd0) attains
“available” status and can be used. The status of the DVD drive in VIOS can be verified in IVM:
•
Start a browser session to VIOS and log into IVM with
padmin
or another administrator
userid
•
Click
View/Modify Virtual Storage
•
Click
Optical Devices
. If
cd0
appears under Physical Optical Devices, the status of the
device is “available”
However, when moving the BladeCenter DVD drive from one Power blade to another, its status is
not properly updated in VIOS and IVM on both blades. After performing the steps to re-assign
the DVD drive to the second Power blade per section 5.2.1, the cd0 device will still appear in IVM
on the first blade and its status in VIOS will remain “available.” Meanwhile, the status of cd0 on
the second blade will be “defined” in VIOS and the device will not appear in IVM. To correct the
status of the DVD drive on both blades, perform the following steps:
•
Start a Telnet session to VIOS on the first blade and log in with
padmin
•
Run
the
command
rmdev –dev cd0
•
Start a Telnet session to VIOS on the second blade and log in with
padmin
•
Run
the
command
cfgdev
The DVD drive will now appear in IVM on the second blade and no longer appear on the first
blade.
7. Backup and restore
7.1. Overview of backup and restore for IBM i on a Power blade
The save and restore process for IBM i on a Power blade is similar to that on other Power servers.
Clients have the option to use either a single LTO4 SAS-attached tape drive or a Fibre Channel-
attached tape library with LTO4 drives. The SAS tape drive or a tape drive from the Fibre
Channel tape library is recognized in the IBM i LPAR and follows the same naming convention as
in any other IBM i environment. This allows an administrator to use native IBM i save and restore
commands or BRMS (Backup Recovery Media Services) as part of the same backup and
recovery strategy employed on other Power servers.
