- What is the purpose of ClusterBalancer
software?
- Who is ClusterBalancer software designed
for?
- What do I need to know to use
ClusterBalancer software?
- What is the system requirement for
running ClusterBalancer software?
- What is the difference of Hub and Switch
connected clustered system and how would this difference
affect using ClusterBalancer?
- What kind of services can
ClusterBalancer/Load Balance handle?
- What is server level failover?
- What is service/application level
failover?
- Is Active Directory Service (ADS)
required for ClusterBalancer/Firewall?
- Is there any securty protection with
ClusterBalancer software?
- What type of firewall protection does
ClusterBalancer/Firewall offer?
- Can I deploy the same policies to both
clucstered server systems?
- Is it possible to configure the
firewall service to allow internal connectivity (ie no
restriction) between the clustered server systems?
- When installing ClusterBalancer
software on the secondary system, can I install it on a
drive (ie, D:) that is different from the Primary
system's drive (ie, C:)?
The purpose of ClusterBalancer software is to increase
server service availability and fault tolerance. Based on
the clustering server system concept, ClusterBalancer
software ties two server systems together to provide the
service as one. This clustering system also allows
flexibility for both service backup and system maintenance.
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ClusterBalancer software is specifically designed for
small businesses who have servers to handle either internet
or intranet services.
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There is no special technical knowledge required for
using ClusterBalancer software. Anybody who knows enough of
windows system to start an application can use
ClusterBalancer software.
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The only requirement for running ClusterBalancer software
is that your server systems must be ruuning windows NT or
2000 software. Cross platform is OK (ie, Primary system
running NT and Secondary system running 2000; or vice
versa).
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The difference in a network connected by a hub or by a
switch is determined by their ways of sending network
packets: while switch sends a packet to a predetermined node
only, hub sends all packets to every node in the network and
leave it to each node to decide if it is responsible to pick
up a packet.
The switch connected cluster system will not carry out
load balance because of this design, but it should not
affect the normal function of File Sychronization and
Firewall functions of ClusterBalancer package.
The benefit of setting up load balance in switch
connected cluster system is: when failover occurs, load
balance will assign all service requests normally handled
by the Primary system to the Secondary system. So, if no
load balance is set, this service re-assigning will not
work.
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ClusterBalancer/Load Balance can handle all server
service requests. Some examples are: internet web server
service, mail or ftp server services, intranet server
service, etc...
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System failover is the situation when one of the
clustered systems is down entirely and all service used to
be carried by it are now loaded on the still working system.
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Service/application failover is when one (or some) of the
load-balanced service or application stops functioning on
one of the clustered systems, all service requests normally
handled by the system will be now handled by the service/
application on the other system.
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No. ClusterBalancer/Firewall Operates independently.
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Yes. A Firewall section is included in the
ClusterBalancer package for local protection of the
clustered server systems.
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ClusterBalancer/Firewall can be installed only as 'host
firewall' for local protections of the servers in the
cluster system.
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Yes, you can setup policies on one system first then
apply it to the other clustering system using the 'File
System Sync Tool' in the package.
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Yes, you can setup an internal network group with
ClusterBalancer/Firewall and define a rule to open the
restriction for the other system.
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Yes and No. ClusterBalancer/Load Balance and
ClusterBalancer/Firewall will function with no difference
with the situation. However, attempt to do file
synchronization will fail if the file systems are not
identical.
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