Automatic CPU detection to take advantage of certain CPU features such as streaming SIMD support.Backgrounded array reconstruction using idle system resources.Portability of arrays between Linux machines without reconstruction.
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There are faster CPUs in the current era, therefore Software RAID generally outperforms Hardware RAID.
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Software RAID, on the other hand, implements the various RAID levels in the kernel disk (block device) code and offers the cheapest possible solution, as expensive disk controller cards or hot-swap chassis are not required. It uses Hardware RAID controller card that handles the RAID tasks transparently to the operating system.
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Hardware RAID handles its arrays independently from the host and it still presents the host with a single disk per RAID array. RAID technology comes in three flavors: Firmware RAID, Hardware RAID and Software RAID. Depending on your RAID type, you will be able to achieve redundancy which will later save you in case there are incidences of data losses. Minimizes data loss from disk failure.Increases storage capacity using a single virtual disk.Primary reasons you should consider deploying RAID in your projects include the following:
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Using techniques such as disk striping (RAID Level 0), disk mirroring (RAID Level 1), and disk striping with parity (RAID Level 5,4 and 6), RAID is capable of achieving redundancy, lower latency, increased bandwidth, and maximized ability to recover from hard disk crashes.
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This array of devices appears to the computer as a single logical storage unit or drive. It was basically developed to allow one to combine many disks (such as HDD, SSD and NVMe) into an array in order to realize redundancy. RAID stands for Redundant Array of Independent Disks.