Netbackup SAN Client Overview

Starting NBU 6.5 & above, Netbackup introduce SAN Client to provide fibre transport backup.  This will reduce cost to the customer as before this server with huge data will only have Media server and its license more costly than SAN Client.

When top level guys look down they see only shit......

Management Lesson 101

Setting Up NIC Speed, Duplex setting on RHEL

There's a tool call ethtool on Red Hat / Centos / Fedora

First install this tool
# up2date ethtool net-tools

Task: Get speed and other information for eth0
Type following command as root user:
# ethtool eth0

Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: MII
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: d
Current message level: 0x00000007 (7)
Link detected: yes

Setup eth0 negotiated speed with ethtool
# ethtool -s eth0 speed 100 duplex full
# ethtool -s eth0 speed 10 duplex half

However, these settings are not permanent, if you reboot the system it will gone. To set it permanently, here is what you need to do:

To set the interface speed, duplex or auto negotiation on Linux system boot up (make settings permanent), you need edit /etc/sysconfig/network-scripts/ifcfg-eth0 file for eth0 interface. This file used by Red Hat enterprise Linux, Fedora core, Cent Os etc.

Open the file:
# vi /etc/sysconfig/network-scripts/ifcfg-eth0

Append following line:
ETHTOOL_OPTS="speed 100 duplex full autoneg off"

Save and close the system. It will set the eth0 device to 100Mbs, full duplex, with the auto negotiation off at boot time. You can simply restart the networking (it will disconnect all ssh or ftp session) or restart the server. Depend upon traffic and load it may take upto 1 minute to setup a new port speed:

# /etc/init.d/network restart

If you want 1000Mbs set line as follows:
ETHTOOL_OPTS="speed 1000 duplex full autoneg off"

Update: if above command failed to work for 1000Mbps use following command (see below in comment sections for discussion) :

ETHTOOL_OPTS="speed 1000 duplex full autoneg on"

Multiple source from combine into this one page.