Wednesday, September 19, 2012

Brocade FOS 6.x and 7.x Interoperability and FOS 7.x Supported Products

How to check If old SAN switches with FOS 6.x are supported to be connected with new SAN SW with FOS 7.x?

FOS V7.0 is only supported on 16G and 8G platforms. 
Means all 2498-xxx  and 2499-xxx products sold by IBM.

Tuesday, September 18, 2012

IBM POWER 6 & 7 systems facts inc. rPerf and features

Need a quick reference for IBM Power ® Systems -- including Power processor-based BladeCenter® blade servers and IBM PureFlex™ compute nodes? The Facts and Features reports give you a side-by-side comparison of the various systems available with many of their key specifications and information about supported AIX, IBM i and Linux versions.

Saturday, September 1, 2012

AIX: while infinite loop aix ksh

Here is an example of infinite loop using while in shell ksh in AIX

while true
echo "Hello world!"
sleep 5

PowerVM: Managing VLANs on SEA on-line without any disruption

Make VLAN tagging modular to avoid downtime

Summary:  Shared Ethernet adapters (SEAs) can be used for IEEE 802.1Q VLAN tagging. However, once the SEA is in use, you cannot make changes to the VLANs on the trunk virtual Ethernet adapter without stopping the SEA. By using separate virtual adapters for each tagged VLAN, you can attach a new virtual adapter with its new VLAN to the SEA without any downtime. Retiring a VLAN from the SEA can be just as easy with a modular approach: one tagged VLAN per virtual adapter.

The problem and goal:

You have a shared Ethernet adapter (SEA) with VLAN tagging that services mission-critical websites. A new website requires an additional VLAN to be attached to the SEA. Outages are difficult to arrange. You can not use dynamic logical partitioning (DLPAR) to add VLANs to an existing virtual adapter on the SEA, because the adapter is in use as part of the SEA configuration.