2-Understanding RAID
RAID 0 (Striping)
This RAID algorithm writes data across multiple disk drives instead of just one disk drive. RAID 0 does not provide any data redundancy, but
does offer the best
Pros: Disk striping enhances both read and write performance because multiple drives are accessed simultaneously,
Cons: The reliability of RAID Level 0 is less than any of its member disk drives due to its lack of redundancy.
RAID 1 (Disk Mirroring)
RAID 1, also known as “disk mirroring”, distributes duplicate data simultaneously to 2 disk drives.
Pros: RAID 1 offers extremely high data reliability as all the data is redundant. If one drive fails, all data (and software applications) are preserved on the other drive. Read performance may be enhanced as the array controller can access both members of a mirrored pair in parallel.
Cons: RAID 1 volume requires double the raw data storage capacity. During writes, there will be a minor performance penalty when compared to writing to a single disk.
RAID 10 (Striped Mirror)
RAID 10 is a combination of RAID 0 and RAID 1, combing striping with disk mirroring. RAID Level 10 combines the fast performance of
Level 0 with the data redundancy of Leve1 1. In this configuration, data is distributed across several disk drives, similar to Level 0, which are then duplicated to another set of drive for data protection. RAID 10 provides the highest read/ write performance of any of the Hybrid RAID levels, but at the cost of doubling the required data storage capacity.
Pros: Fastest read/write performance of any of the Hybrid RAID levels High data reliability as all the data is redundant.
Cons: Requires double the raw data storage capacity
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