Archive for May, 2009

What is Veritas Volume Manager?
Here’s an excerpt from Wikipedia and Sun.Com:
The Veritas Volume Manager, VVM or VxVM is a proprietary logical volume manager from Veritas (now part of Symantec). It is available for Windows, AIX, Solaris, Linux, and HP-UX. A modified version is bundled with HP-UX as its built-in volume manager. It offers volume management [...]

IPMP has the following features:

It eliminates a single network adapter as a single point of failure in these cases, ( a. Network adapter failure b. Network link failure)
It enables interfaces to fail over within approximately 10 seconds when using the default configuration.
It can be configured by adjusting the parameters in the ”/etc/default/mpathd” file.
It can be configured for use with both IPv4 and IPv6.
It enables interfaces to be configured as standby interfaces.

{IPMP failure detection:
Probe­-based failure detection
-detects network error by sending ICMP ECHO_REQUEST messages
Link based failure detection
-detects network error by checking the IFF_RUNING
How to Configure IPMP on Solaris