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System Raid 1

I Raid 1 mirroring technology exploiting to save the data without interruption. "Mirror" simply means that the hard disk 1 2 replica, or that 3:04 discs replicated discs 1 and 2.
Whatever the configuration of the drive, what matters is that the data on a disk or a partition, are fully replicated. The Raid 1 system has a maximum capacity equal to that of the smallest drive in the system. Ideally consists of two discs and its reliability increases by two times compared to a single disk. Since each drive can be managed individually if one fails the other, the reliability increases with the number of drives used.
The system also increases Raid 1 read performance, since many configurations allow you to read from a drive while the other è occupata.
La perdita dei dati nei sistemi Raid-1 avviene solo in caso tutte le unità presenti nel sistema si danneggino, caso comune in caso di urto, caduta o shock elettronico.
In questi casi il recupero dati è possibile all’80%.

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Recover deleted files from the trash!

Per questioni di spazio o anche per i piccoli errori cancelliamo dei file , che invece successimente nel corso del tempo ci possono ritornare utili. Idea comune è quella di dire che una volta rimossi dal cestino questi file sono impossibili da recuperare. Anche io fino a qualche tempo fa la pensavo cosi , e non mi sono mai prodigato per riuscire a recuperare file rimossi dal cestino : consider it as the 'last leg that ran through each file before it is permanently deleted . But instead, let me share with you the real truth: the file after their removal from the trash are still recoverable because they are not completely removed from the computer itself. It should be said that not all files can be recovered: in fact, files or data, are sunk if they have been overwritten (in the 'opposite scenario these files are still recoverable). For an effective and safe recovery is also essential to a good computer, no viruses, defragmented very often.

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The system Raid 0 , che molti non considerano in realtà un sistema RAID, poichè non prevede ridondanza dei dati, necessita di minimo 2 dischi ed utilizza un’operazione detta di striping per velocizzare la equa distribuzione dei dati sui vari dischi visti dal sistema operativo come un unica unità. Solitamente questo lo si raggiunge attraverso dei controllers hardware.

Mentre in un disco singolo ogni blocco, per esempio di 256kb, deve essere scritto interamente da un solo drive, il sistema Raid 0 può scrivere blocchi di 128kb o di 64kb ciascuno su due o quattro dischi, offrendo performance I/O migliori. Performance che possono essere migliorate utilizzando più controllers dischi.

In ogni “stripe” RAID-0 disks must be of the same size as the I / O call to read and write are alternated on the various discs parallelo.L 'reliability of a Raid-0 is equal to the reliability of the drive, divided by the average number of disks used. So the reliability of this system is very bassa.Il failure of a single unit makes the RAID-0 does not work and the data inaccessible. The most reliable

data recovery companies are able to solve 80% of cases of lost data from RAID-0.

If one of the units of a RAID-0 irriparabilmente becomes corrupted, the data recovery by This type of system is unfortunately impossible.

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RAID 0 RAID Data Recovery Systems

I Raid ( Redundant Array of Independent Disks ) first patented by IBM in 1978, a computer system that uses a set of hard drives for share or replicate data.
The goal of these systems and to improve performance in terms of speed, integrity and security of data over a single hard drive.
In its simplest configuration, a RAID system allows you to configure a set of drives so that they are seen as a single logical unit by the operating system also
RAID, however, are subject to logical errors and physical damage they are also composed of hard disk drives.

There are different types of RAID:

• Raid 0 Raid 1 Raid 2
• Raid 3 Raid 4 Raid 5
• Raid Raid 6 7
• Raid 10 (1 +0)
• Raid 15 (1 +5)

The process of data recovery raid on systems is extremely complicated nature .... a little more information below ....