Question

What is Cluster network? explain it's advantage and disadvantage.

Answer 1

Answer:

Disadvantages of Clustering Servers

Disadvantages of Clustering ServersCost is high. Since the cluster needs good hardware and a design, it will be costly comparing to a non-clustered server management design. ... Since clustering needs more servers and hardware to establish one, monitoring and maintenance is hard. Thus increase the infrastructure.

Answer 2

Answer:

Hii..

Cluster network:-

A cluster network is two or more computing devices working together for a common computing purpose.

Advantages of Cluster network:-

• Replication of data, which can be used for disaster recovery at one or more geographically remote sites.

• Client-side mirroring of data, which can be done using redundant iSCSI LUNs provided by multiple arbitrarily located storage servers.

• Load balancing, which is built into the NFS protocol and can be provided for some other protocols by external hardware or software (applies to read-only data).

• Redundant hardware components including power supplies, network devices, and storage controllers.

• Fault management software that can identify failed components, remove them from service, and guide technicians to repair or replace the correct hardware.

• Network fabric redundancy provided by LACP and IPMP functionality.

• Redundant storage devices (RAID).

Disadvantages Of Cluster network:-

• The potential for application intolerance of protocol-dependent behaviors during takeover,

• The possibility that the cluster software itself will fail or induce a failure in another subsystem that would not have occurred in standalone operation,

• Increased management complexity and a higher likelihood of operator error when performing management tasks,

• The possibility that multiple failures or a severe operator error will induce data loss or corruption that would not have occurred in a standalone configuration, and

• Increased difficulty of recovering from unanticipated software and/or hardware states.

Additional information:-

It is important to understand the scope of the Oracle ZFS Storage Appliance clustering implementation. The term 'cluster' is used in the industry to refer to many different technologies with a variety of purposes. We use it here to mean a metasystem comprised of two appliance controllers and shared storage, used to provide improved availability in the case in which one of the controllers succumbs to certain hardware or software failures.

A cluster contains exactly two appliances or storage controllers, referred to for brevity throughout this document as controllers.

Each controller may be assigned a collection of storage, networking, and other resources from the set available to the cluster, which allows the construction of either of two major topologies. Many people use the terms active-active to describe a cluster in which there are two (or more) storage pools, one of which is assigned to each controller along with network resources used by clients to reach the data stored in that pool, and active-passive to refer to which a single storage pool is assigned to the controller designated as active along with its associated network interfaces.

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