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1. Data storage in RAID architecture
It is a fact that RAID technology tricks the computer system into believing that it is a single hard
disk, but the fact is that it distributes the reproduced data across several hard disk drives. The
distribution of data is done in two ways, which are two generalized concepts. Mirroring is one
of the ways, which offers replication of data on another disk and the second concept is striping,
where splitting of reproduced data takes place across the available disk drives. Parity is a
concept, which is also streamlined into RAID technology as another way of storage method. It
involves saving of information across the disk arrays, so that, the same information can be used
to recreate or reconstruct the affected data, which is otherwise filled with errors or data loss,
when disk drive fails. For more details please log on Industrial computer repair
The concept of redundancy comes into effect, as soon as the disk drives fail, while rests of the
disk arrays continue to function. But the wise duty of the IT administrator is to solve the disk
drive failure, as long as it is diminutive. Its prolonged existence can make other drives
vulnerable to failures. This can be done, by replacing the faulty drives, without affecting the
whole system and this terminology is called as hot swapping. But this type of replacement
flexibility, without affecting the whole system working is seen in only certain types of RAID
types. So, the data recovery strictly depends on the RAID level, which is deployed on the data
center. While planning the RAID architecture, the hot swapping technique must be given
utmost importance, in order to replace the faulty drives without affecting the whole working
system.
In order to ensure foolproof redundancy, enterprises opt for Nested RAID levels which
constitute the combination of two or more RAID configurations that offer advantages of both

2. the methods. A paradigm is RAID 10, which is a combination of RAID level 1 and RAID level 0,
where RIAD level 1 configurations works on the RAID 0 technique.
Requirements for Deploying RAID
Hardware - RAID can be deployed on hard drives which include SATA, ATA and SCSI. The
number of hard disks, required will be depending on selection of the RAID level configuration. It
is always recommended for the use of matched hard drives of same capacities. It is a fact that
most of the arrays will be using the capacity of the smallest drive. So, if a 250GB capacity drive
is deployed in the RAID configuration, which has an 80GB hard disk drive, then the 170GB will
be waste and will only be useful in JBOD Or just a bunch of disk raid level. Moreover, the
hardware drives must not only match in capacities, they must in terms of writing speeds,
transfer rates and so on. RAID controllers are deployed for SCSI, SATA and ATA hard disks and
some systems also allow RAID arrays to be operated across controllers of different formats.
For those who are ignorant about RAID technology, here is a detail. RAID controller is a
hardware, through which all the hard drives are connected and this is responsible for
processing of data. It is similar to the motherboard arrangement where typical drive
connections are found. For more details please click here Rugged panel computer
The requirement for a hot swappable drive bay is also essential, in conditions, where a hard
disk drive turns faulty and needs to be replaced. It allows the replacement of failed hard drive
from a live system by the simple method of unlocking the drive cage out of the case and then
sliding in the locked into a the place.
Software requirements - RAID technology can be deployed on any modern operating system, if
it has all appropriate drivers provided by manufacturers of RAID controllers. The operating
system and the software needs should be upgraded from the beginning and prior to this step,
all the data must be backed up, so that it can be restored on to the newly laid RAID technology.
If the RAID array is specifically maintained for data storage and not for any other operating
system run, then things get simple.