RAID 1

The RAID 1 is the second type of RAID disk that is used for the purpose of utilizing on the property of fault tolerance. There are many models in the RAID like the SAN and the NAS etc. These are the examples of the models that are called as the floor standing models. Usually the RAID systems are available in many models that range in all the sizes from the large ones to those called as the floor standing models. The stand alone systems are also there in the RAID subsystems. The stand alone systems also have a large amount of cache available. The name also specifies that the RAID system is redundant in nature. There is also a redundant power supply.

The RAID system was actually used with the servers but these days the RAID is being used extensively with the desktop computers or the personal computers. The RAID controller is being added in addition to the extra IDE or the SCSI disks. The motherboards might not have the RAID controller but the modern or the advanced motherboards have the RAID controller as the default option available in them. The motherboard may also have the option to enable such controllers or to continue with the existing one.

The sole purpose of having the RAID 1 disk is its importance in the fault tolerance systems. The mirroring technique is used in the implementation of the RAID 1 server. The idea behind the mirroring is that it is used to duplicate the data on the system and provide a true copy to the other disk. This technique is very much important when the data is important and the backup is necessary. The data duplication involves reduced risk of data failure. Any how all the data is backed up and the system can recover it at any specified given time.

The data duplication in the case of RAID 1 is 100%. That means the data is copied in its entirety to the other storage disk. This type of technique is quite important in case of highly important data. For example the data in the case banking systems, database of the defense system, large corporate systems etc. The RAID 1 by its application increases the reliability of the data. This is the major advantage for the usage of the RAID 1. But at the same time apart from increases the reliability of the data, it also increases the credibility of the cost involved in the implementation and the maintenance of the system.

The cost increases in the RAID 1 system because the duplication of the data requires the storage of data on the other disks. Hence a huge secondary memory is obviously required. The RAID 1 implants are mainly used in the business solutions. The business solutions like the database of the banking system software, commercial data bases of the customers, airline reservations of the customers, railway reservations, stock and shares databases and many applications or computers and the software industry in the business world.

Hence the RAID 1 is one among the most important storage disk that is commonly used for the storage of the data. Among all the other storage systems or even the other RAID types this is the most widely used and the one that provides as well as offers the maximum reliability as far as the sensitivity of the data is concerned. The data access also becomes faster with this technique of mirroring. But the writing process is quite slower when compared to the reading process, because the writing has to be done twice to both the physical disks.

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