Online RAID Administration Assignment Help
Introduction to RAID Administration
RAID is referred to as the Redundant Array of Independent Disks. It signifies to the multiple hard drives that are independent and thus combines to form a single but large logical array. With the information of additional redundancy, data is saved on the disk array. Thus the information of redundancy can either be the data itself, or the information of parity that is being calculated from the several data blocks i.e. RAID 4 or RAID 5. Instead with the presence of a set of virtual disks, the operating system does not deal with the individual drives when RAID is in its place. RAID is utilized by the users for the dual purpose of increasing redundancy and performance with the different levels of RAID thus offering different solutions. In the event of a hard disk failure it prevents downtime, though it cannot recover the data that has been deleted by a user or has been destroyed by a major event. The students can avail RAID Administration assignment help from BookMyEssay.
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Execution of the RAID process
In the Input/Output path RAID can reside in several places. It includes the places like—
- Host I/O Controller based on Special Device Drivers: The device driver is integrated into the operating system, in this system. Thus the RAID system’s performance is entirely dependent in this system on the processing load which is kept on the host CPU and that might potentially lead to an issue during the reconstruction phase of the array thus followed by a disk failure. Students can avail support for RAID Administration case study help for any difficulty in this subject.
- Disk System based RAID: This method of RAID involves a storage processor or hardware RAID controller through which the RAID operation is executed. With this installed system, from the host computer RAID is offloaded and then it is controlled entirely within the disk system. The aspiring students can avail the illustrated study in RAID Administration.
- Host with the Help of Volume Manager: In this method of RAID, the software of volume manager manages the RAID operations and it uses the resources of the host system to perform the RAID operations.
The overall process of RAID is composed of different levels that spreads the data across the drives of the array in a different way and is optimized for some specific situations. The different levels of the RAID are as discussed below:
- RAID 0: The striping maps data so that the data is interleaved among two or more physical disks of the array. A striped disk of the level contains two or more sub-disks. In this way portions of two or more hard drives are combined and read or write performance is improved.
- RAID 1: In this level 1 system of RAID, identical data is stored on the two hard disks and thus it is completely redundant. When one of the disk drives fails then the entire data is immediately available on the other without any kind of impact on the integrity of data or performance. Disk mirroring takes place at this level when two disk drives are mirrored on one SCSI channel. It is referred to as a disk duplicating when each of the disk drive is connected to a separate SCSI channel. In this way there are different levels like RAID-4, RAID-5, RAID-10, and RAID 0+1.
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