DAS (Direct Attached Storage) Direktverbunderner Speicher. Storage that is directly connected to the server.

NAS (Network Attached Storage) Netzwerkgebunderner Speicher. Storage that you can access via the LAN Network.

SAN (Storage Area Network) Speichenetzwerk. An idependent Network that consist of Storage.

Overhead - Verwaltungsdaten. Overhead data is created additonal to the user data. It is used for special transmisson data.

NAS box - NAS Gehäuse. A box where you can put in hard drives and power supply for the NAS Server.

Fibre Channel - Fibre Channel. Fibre Channel is the standardized interface for network storing. It is also has its own protocol.

ture or false?

1. Most users’ computers and most servers have Direct-Attached-Storage
(DAS).
- true.
2. Direct-Attached Storage is always directly accessible to other servers or
clients.
- false.
3. Each NAS device has its own IP address and is connected to the server
which acts as gateway to the data.
- true.
4. A NAS device comprises a dedicated hardware device that connects to
a LAN.
- true.
5. A NAS box provides all types of the activities that a server typically
provides, such authentication or file management.
- false.
6. NAS decives often run their own proprietary operating systems and do
not perform non-storage tasks.
- true.

7. SAN architecture interconnects storage systems, backup devices, and
servers, and removes LAN traffic to improve network performance.
- true.

8. A SAN consists of a communication infrastructure, which provides
physical connections, but does not comprise a management layer,
which organizes the connections.
- true.
9. Fibre channel signaling can only run over fiber optic cables.
- wrong

IP

Internet Protocol, nonphysical network address for devices in a network.
TCP

Transmission Control Protocol, a secure protocol to transmit data.
NAT

Network Address Translation

ASIC

Application-specified integrated circuit

QoS

Quality of Service, multiple standards and mechanism to guarantee high quality.
VoIP

Voice over IP, a service to phone via the internet.