图解 | 【存储部落】

RAID10工作原理图解及特点分析

RAID 10: Very High Reliability combined with High Performance Characteristics/Advantages 1. RAID 10 is implemented as a striped array whose segments are RAID 1 arrays 2. RAID 10 has the same fault tolerance as RAID level 1 3. RAID 10 has the same overhead for fault-tolerance as mirroring alone 4. High I/O rates are achieved by striping RAID 1 segments 5. Under certain circum...

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RAID7工作原理图解及特点分析

RAID 7: Optimized Asynchrony for High I/O Rates as well as High Data Transfer Rates Architectural Features: 1. All I/O transfers are asynchronous, independently controlled and cached including host interface transfers 2. All reads and write are centrally cached via the high speed x-bus 3. Dedicated parity drive can be on any channel 4. Fully implemented process oriented real...

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RAID6工作原理图解及特点分析

RAID 6: Independent Data disks with two independent distributed parity schemes Characteristics/Advantages 1. RAID 6 is essentially an extension of RAID level 5 which allows for additional fault tolerance by using a second independent distributed parity scheme (two-dimensional parity) 2. Data is striped on a block level across a set of drives, just like in RAID 5, and a secon...

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RAID5工作原理图解及特点分析

RAID 5: Independent Data disks with distributed parity blocks Characteristics/Advantages 1. Highest Read data transaction rate 2. Medium Write data transaction rate 3. Low ratio of ECC (Parity) disks to data disks means high efficiency 4. Good aggregate transfer rate Disadvantages 1. Disk failure has a medium impact on throughput 2. Most complex controller design 3. Difficul...

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RAID4工作原理图解及特点分析

RAID 4: Independent Data disks with shared Parity disk Characteristics/Advantages 1. Very high Read data transaction rate 2. Low ratio of ECC (Parity) disks to data disks means high efficiency 3. High aggregate Read transfer rate Disadvantages 1. Quite complex controller design 2. Worst Write transaction rate and Write aggregate transfer rate 3. Difficult and inefficient dat...

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RAID3工作原理图解及特点分析

RAID 3: Parallel transfer with parity Characteristics/Advantages 1. Very high Read data transfer rate 2. Very high Write data transfer rate 3. Disk failure has an insignificant impact on throughput 4. Low ratio of ECC (Parity) disks to data disks means high efficiency Disadvantages 1. Transaction rate equal to that of a single disk drive at best (if spindles are synchronized...

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RAID2工作原理图解及特点分析

RAID 2: Hamming Code ECC Characteristics/Advantages 1. "On the fly" data error correction 2. Extremely high data transfer rates possible 3. The higher the data transfer rate required, the better the ratio of data disks to ECC disks 4. Relatively simple controller design compared to RAID levels 3,4 & 5 Disadvantages 1. Very high ratio of ECC disks to data disks with small...

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