My Three years old daughter told me these words!! My kid ( priyakari) started her playschool in Feb/13, She used to be a happy kid and very punctual to her school for the first 6 months. But suddenly, something changed in her schedule and she started...
Solaris Admin / Solaris ZFS and Boot Environment / Storage Administration - SAN / Unix Experts
by Ramdev · Published September 23, 2012
In my earlier hands on lab post ( Hands on Lab – Replacing Failed Disks from ZFS Pools ( Simple / Mirrored / RaidZ )). I have explained the disk failure scenarios for ZPOOL mirror and RaidZ volumes, and this post is just continuation to that...
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,...
Solaris Admin / Solaris ZFS and Boot Environment / Solaris11 Admin
by Ramdev · Published September 17, 2012 · Last modified July 31, 2015
In our earlier post ( To get Started with ZFS ) , yogesh discussed about various ZFS pool and file system Operations. In this post I will be demonstrating the redundancy capability for different ZFS pools and also the recovery procedure from the disk failure scenarios....
Beginners Lessons / Oracle Hardware / Reference Docs / Solaris Admin / Unix Beginners
by Ramdev · Published September 13, 2012
We are living in a trend of remote System Administration and in real-time we rarely touch and feel a server that we are managing for 24×7 ( 24 Hours a Day and 7 days a Week). Although we don’t really deal with our servers physically, it...
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...
Blog for Unix Admin / Network Design / Solaris Networking / Solaris Performance Monitoring
by Ramdev · Published August 24, 2012 · Last modified July 23, 2016
Our Unixadmin, John from xyz company, recently upgraded one of his server’s network interface card from the old one with 100MB speed to a new one with 10Gig speed , and the reason is to improve the speed for the backup of the server. After the NIC Upgrade john found that the server network...
Beginners Lessons / Network Design / Solaris Beginners Guides / Unix Beginners / Unix Experts
by Ramdev · Published July 31, 2012 · Last modified August 5, 2016
Let us assume that our system administrator Jack is supporting for a server environment in which a small set of servers are located in DMZ (Demilitarized zone ) network . In order to connect any DMZ server Jack has to ssh from his machine (windows PC/Unix...
Beginners Lessons / Linux Beginners Guides / Linux Networking / Network Design / Solaris Beginners Guides / Solaris Networking / Unix Beginners / Unix Experts
by Ramdev · Published July 28, 2012 · Last modified July 2, 2015
Virtual LANs or VLANs are virtual separations within a switch that provide distinct logical LANs that each behave if there were configured on a separate physical switch. Some Important points about VLANS. All the servers connected with in a VLAN will have same broadcasting domain, and...
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...
