Category: Unix Experts

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Cloud Computing : adoption issues

In my previous post  about ” Cloud Computing” ,  I tried to explain my understanding about cloud computing so far. In this post I am trying to highlight some of the important points and concerns , from various research studies, that need attention while planning for...

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VCS : Configure /etc/llttab

The /etc/llttab file must specify the system’s ID number (or its node name), its cluster ID, and the network links that correspond to the system. In addition, the file can contain other directives. Refer also to the sample llttab file in /opt/VRTSllt. Run the dladm show-dev command...

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Solaris host level SAN migration from Clariion to VMAX – Hands on Lab

During the past two to three years,  many organisations started migrating their Server storage from Old legacy SAN devices ( e.g. EMC Clariion )  to new  powerful SAN storage ( e.g. EMC Symetrix VMAX) because of the low performance and maintenance costs involved with legacy storage....

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VCS 6.1 : How to Configure vxfen driver for cluster I/O fencing using vxfenconfig?

The vxfenconfig command configures the vxfen driver using parameters found in /etc/vxfenmode file. For a list of possible parameters and usage information please see the manpage for /etc/vxfenmode file. If this file is omitted I/O Fencing defaults to SCSI3 functionality. vxfenconfig command configures the vxfen driver...

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Deployment and understanding of LDOMS (Logical Domains)

Deployment and understanding of LDOMS (Logical Domains): Ldom technology allows us to allocate a system’s various resources such as memory, CPUs and devices (I/O,Networl interfaces etc) into logical groupings and create multiple, discrete systems each having their own operating system, resources, and identity within a single...

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