Below are the steps to rebuild the /dev/sg/* and /dev/rmt/* and to detect Robot devices on a Solaris server:  Note: Prior to below steps I have verified the outputs in cfgadm to check Tapes and Media Changer (Robot) status.  1.)  Check and create a backup copy of the current st.conf file:  root@yogesh-test# cat /kernel/drv/st.conf  root@yogesh-test# [...]

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In one of our previous post “Solaris Troubleshooting (Magic of Solaris 10) – Root Password Recovery for any Solaris 10 (without CD/DVD)”. We tried to show how to recover system’s root password in Failsafe mode without any media for OS having single disk (i.e native device, c#t#d#s#). But if your system is mirrored then you [...]

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I came across one unique parameter which I would like to share on our gurkulindia, specially for small business organisations where we dont have seperate power backups for DC. Has anyone noticed while working on Solaris boxes if you will power down (init 5 or poweroff from LOM/ALOM/ILOM) the Solaris boxes, they wont come up [...]

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System Controller battery (BATTERY at SC/BAT/V_BAT has exceeded low warning) failure in T-series servers. Many a times you will get a hardware error in /var/adm/messages (or at ALOM/LOM prompt, console messages) for SC battery failure, In this post I will explain the battery replacement procedure along with its importance in the system. sc> showfaults -vLast [...]

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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 computer system. Ex: In General Server Techonoly, an OS [...]

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ZFS Patching with Zones using LU (Liveupgrade) in Solaris.  SOLARIS LIVE UPGRADE: Solaris Live Upgrade software enables the operating system to continue to run while upgrades, patch installations, or routine maintenance operations are performed. System administrators can patch a system image rapidly without impacting the boot environment needed by the Solaris OS to run. Administrators [...]

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