RAID – The love-hate relationship, but for how long will it last?
Posted by Karim Buzdar on January 25, 2018
2.75/5 (4)

Back in the day, RAID (Redundant Array of Independent Disks) was considered the king of the storage landscape. Businesses paid a lot to receive the much expensive privilege of data protection. In today’s world though, the once-hot breakthrough technology is considered a sin among most storage circles.

Commonly used as a secondary data protection technology, it helps increase the performance and reliability of data storage. On a physical level, it’s a logical configuration of multiple physical drives to provide fault tolerance and data optimization in a system. One can organize data in a RAID array in different levels by balancing data and recovery needs or speed and fault tolerance properties – essentially whatever factors are most critical to the business.

(more…)

Please rate this

RAID: Parity RAID vs SSD
Posted by Anton Kolomyeytsev on October 2, 2015
4.67/5 (3)

The post describes the history of RAID 5 and how it became obsolete at some point in time, just because HDD capacity grew at an enormous rate. It happened due to the chance of failure that grew to literal imminence when spinning disks reached TB scale, because the reading speed still had the same physical limits. Basically, creating a RAID 5 even with 1 TB disks would mean certain failure of the whole array and quite soon. The array technology was “saved” by an unlikely ally – the SSD. Being faster than hard disk drives in everything, they almost nullify the chance of the abovementioned failures. The post is written for everyday reader, not just engineers, and is quite comprehensive even without special knowledge and skills.

HDD and SSD

(more…)

Please rate this