Update disks microcode attached to RAID adapter on Power8 server

Disk drives attached to this RAID adapter must contain the latest microcode level. Microcode can be updated using the iprconfig utility.  Factory shipper power8 server would have been updated to latest levels.  If user would like to update over period of time try this.

Where can i get latest microcode:?

Micro code is available in IBM fixcentral.

Where to keep microcode?

copy downloaded file to /usr/lib/microcode 

How to update?

a) Micro code can be updated either from pettitboot or Running machine itself.

b) Run iprconfig

c) Select 8 to download/update microcode.

d) Choose only controller as show below  by providing “1”

d) Select microcode  copied to  /usr/lib/microcode to Download & updated microcode.


write/read speed of any new storage device

To verify write/read speed of a storage device, run below simple commands with different strip sizes (4k, 64k, 128k, 256k) ..etc


dd if=/dev/zero of=/home/test oflag=direct bs=64k count=10000


sudo dd if=/dev/sda of=/dev/null iflag=direct bs=4k count=100000

Example write:

[sp@harrypotter ~]$ sudo dd if=/dev/zero of=/home/sp/test oflag=direct bs=64k count=1000
[sudo] password for sp:
1000+0 records in
1000+0 records out
65536000 bytes (66 MB) copied, 1.6814 s, 39.0 MB/s
[sp@harrypotter ~]$


Configure FSP IP on PowerKVM machine

Power8/PowerKVM machines shipped from factory will be provided with default FSP IP.  Power8 machines comes with two FSP ports in back panel.   User would have to change this IP to use his own IP.

1) Where to get default IP?

Default IP is available in User manual  or control panel or below 🙂



2) Default password?

Default password is provided in user manuals.

3) How to change IP?

a) Connect  your Laptop & FSP port with a cable and assign IP to your laptop with in range of default FSP Ip’s.

For ex: use for your laptop, use subnet:

a) Open ASM on your laptop with default IP.

b) Network Services -> Network configuration

c) Choose Active FSP Port (Where ever cable is connected) and change IP

d) Once IP is changed, you will loose connectivity to FSP.  That means it successful.






Change Hypervisor mode on Power8 Server (PowerVM to PowerKVM)

Power8 server is capable of running in either PowerVM or PowerKVM hypervisor mode.  USer would have to change firmware on machine to run in specific  Hypervisor mode. PowerKVM runs on OPAL firmware.

1) Open ASM

2) User need to power off machine before changing Hypervisor mode.

3)  System Configuration -> Firmware Configuration. Change Firmware to OPAL to run in on PowerKVM mode. Or PowerVM to run on PowerVM mode.

4) Power on your machine and start using in PowerKVM mode.