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Administrator Guide
102
TCP/IP is the protocol that most computers use for communication on the Internet
and Local Area Networks (LANs). TCP/IP is comprised of two distinct parts. The
Transmission Control Protocol (TCP) establishes a connection with both the server
and client ends, and passes data to the connectionless Internet Protocol (IP). TCP is
responsible for correct delivery of data from one computer to another. If data is lost
en route to the destination, TCP retransmits until the data is either received
successfully, or a timeout occurs. The Internet Protocol is responsible for actually
moving data from one node of the network to another. Therefore, each packet of
data is forwarded to the correct IP address using the Internet Protocol.
U
UNIX
UNIX is an operating system that is widely used on servers in a variety of contexts,
including the Internet. Since UNIX is multi-user (multiple users can access a UNIX
based system at the same time), it is used for running a server. Clients who wish to
log on to a UNIX server need to either be running a UNIX based operating system
or have a program that allows their workstation to use NFS. The Storageflex server
is based on the Linux operating system, a free, open source version of UNIX.
Uninterruptible Power Supply (UPS)
A UPS is an AC powered battery that computers are plugged into. The purpose of a
UPS is to allow computer to shut down safely when the power goes out. Storageflex
server software has UPS support built in so that when the power cord and a serial
cable is plugged in to a supported UPS, the appliance has the ability to safely
shutdown when the battery level becomes critical in a power outage. This ensures
that no data is lost during power outages.
User Authentication Types
Storageflex offers three different methods for authenticating users.
1 Users Authenticated on the Appliance (Storageflex Server
Mode)
In this method of authentication, all user and group information is
created and maintained on the hard drive of the appliance.
Therefore, each time a user attempts to connect to a private share
on the appliance, Storageflex verifies that the user is allowed to
access the share.
2 Users Authenticated on the Primary Domain Controller – PDC
(Mixed Mode)
In this method authentication, all user and group information is
created and maintained on the NT server. When using PDC
authentication, user and group information cannot be viewed or
modified in ApplianceView. A user connects to a private share on
the appliance then the PDC verifies that the user is allowed to
access the share.
3 Users Authenticated on the Active Directory Services (Native
Mode)
In this method of authentication, all user and group information is