CompTIA® Server+ : It Environment
,Disaster Recovery Concepts
4.4 Implement and configure different
methods of server access
A KVM switch (short for Keyboard, Video,
and Mouse) is a hardware device that allows a user to control
multiple computers from a single keyboard, video monitor
and mouse. A KVM module typically consists of a Video port,
Mouse port, and a keyboard port (PS/2 or USB).
Local : Local remote KVM device design allows users
to control computer equipment up to 1,000 feet (300
m) away from the user consoles (keyboard, monitor and
mouse). They include support for standard category 5
cabling between computers and users interconnected by
the switch device. In contrast, USB powered KVM devices
are able to control computer equipment using a combination
of USB, keyboard, mouse and monitor cables of up to
IP based: use a dedicated micro-controller and potentially
specialized video capture hardware to capture the video,
keyboard, and mouse signals, compress and convert them
into packets, and send them over an Ethernet link to
a remote console application that unpacks and reconstitutes
the dynamic graphical image.
Remote notification and management have the following
It is possible to monitor the physical health of
the server computer without being physically present
at the server. It is possible to configure the notification
hardware/software such that a pager or email alert is
sent out when the problem occurs.
It is possible to switch ON/OFF the server remotely.
This include graceful shutdown of the server computer.
Remote management can also allow remote diagnostics
on the server, and firmware/BIOS upgrades from a remote