RAID (Redundant Array of Inexpensive Disks) defines the use of multiple hard disks by systems to provide increased diskspace, performance and availability. This article solely focuses on implementing RAID1, commonly referred to as mirror disk, whereby two (or more) disks contain identical content. System availability and...
Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base
Solaris Solstice DiskSuite: recover a metadevice that is in an unstable state OR how to recreate metadevice without losing data
When a metadevice goes into an undefined state, recovery of metadevice with meta commands is problematic. The workaround is to re-create the metadevice after carefully recording the current configuration from metastat -p. The procedure is a bit risky if not followed carefully, so keep the backup handy....
If you have an internal domain and an internal name server which has only local hosts. He wants these clients’ requests to be forwarded to the outside nameserver if the local server doesn’t have that information.
Sample VCS configuration file for multiple Oracle instances (single listener)
This post outlines the installation sequence of software to enable Fibre Channel (FC) access to storage devices. Also Steps to configure Fibre Channel (FC) storage devices on Solaris 8 & 9 servers.
To add a mirror to a metadevice with one or more soft partitions can be done with a short amount of downtime, but it’s a bit tricky. The best way to illustrate this procedure is with an example. In the example below, we’ll use the following...
Hosts remotely mount other hosts, often times via routers, bridges with straight NFS mounts or with automount. Sometimes, the process accessing those remote hosts just hangs forever or gets the message: NFS SERVER <servername> NOT RESPONDING ..sometimes followed by NFS SERVER <servername> OK
The command ‘ifconfig -a‘ will find system network interfaces that have been configured on boot, but it is difficult to find the interfaces that may be ‘sleeping’ . We normally trace the name by searching thru dmesg, prtconf, or /etc/path_to_inst