Server RAID Controller
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Hello, friend! Sorry, maybe I'm confused about your question. Do you want to consult the best RAID controller card model or the best RAID level for the server? 1. If the RAID controller card model is used, query the compatible RAID controller card model based on the server model. Then, select the RAID controller card level based on the price, performance, and capability of the RAID controller card. https://support-it.huawei.com/ftca/en/product/rack-server
Basic features of the RAID controller cards: https://support.huawei.com/enterprise/en/doc/EDOC1100173718/b5819142/technical-specifications 2. For RAID levels, as BAZ says, RAID levels are divided into multiple levels. This preface depends on the number of disks and redundancy. RAID 0, also referred to as drive striping, provides the highest storage performance in all RAID levels. In RAID 0 array, data is stored on multiple hard drives, which allows data requests to be concurrently processed on the hard drives. Each hard drive processes data requests that involve data stored on itself. The concurrent data processing can make the best use of the bus bandwidth, improving the overall hard drive read/write performance. However, RAID 0 provides no redundancy or fault tolerance. The failure of one drive will cause the entire array to fail. RAID 0 applies only to scenarios that require high I/O but low data security. RAID 1 is also referred to as mirroring. In a RAID 1 array, each operating drive has a mirrored drive. Data is written to and read from both operating and mirrored drives simultaneously. After a failed drive is replaced, data can be rebuilt from the mirrored drive. RAID 1 provides high reliability, but only half of the total capacity is available. It applies to scenarios where high fault tolerance is required, such as finance. RAID 5 is a storage solution that balances storage performance, data security, and storage costs. To ensure data reliability, RAID 5 uses the distributed redundancy check mode and distributes parity data to member drives. If a drive in a RAID 5 array is faulty, data on the failed drive can be rebuilt from the data on other member drives in the array. RAID 5 can be used to process a large or small amount of data. It features high speed, large capacity, and fault tolerance distribution. RAID6, compared with RAID 5, RAID 6 adds a second independent parity block. In RAID 6, two independent parity systems use different algorithms to ensure high reliability. Data processing is not affected even if two hard drives fail at the same time. However, RAID 6 requires larger drive space for storing parity information and has worse "write hole" effect compared with RAID 5. Therefore, RAID 6 provides lower write performance than RAID 5. For details, please check the Huawei V6 Server RAID Controller Card User Guide 03: https://support.huawei.com/enterprise/en/doc/EDOC1100173718/d68bd984/raid-6 Hope this helps! |
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Hello, friend! Sorry, maybe I'm confused about your question. Do you want to consult the best RAID controller card model or the best RAID level for the server? 1. If the RAID controller card model is used, query the compatible RAID controller card model based on the server model. Then, select the RAID controller card level based on the price, performance, and capability of the RAID controller card. https://support-it.huawei.com/ftca/en/product/rack-server
Basic features of the RAID controller cards: https://support.huawei.com/enterprise/en/doc/EDOC1100173718/b5819142/technical-specifications 2. For RAID levels, as BAZ says, RAID levels are divided into multiple levels. This preface depends on the number of disks and redundancy. RAID 0, also referred to as drive striping, provides the highest storage performance in all RAID levels. In RAID 0 array, data is stored on multiple hard drives, which allows data requests to be concurrently processed on the hard drives. Each hard drive processes data requests that involve data stored on itself. The concurrent data processing can make the best use of the bus bandwidth, improving the overall hard drive read/write performance. However, RAID 0 provides no redundancy or fault tolerance. The failure of one drive will cause the entire array to fail. RAID 0 applies only to scenarios that require high I/O but low data security. RAID 1 is also referred to as mirroring. In a RAID 1 array, each operating drive has a mirrored drive. Data is written to and read from both operating and mirrored drives simultaneously. After a failed drive is replaced, data can be rebuilt from the mirrored drive. RAID 1 provides high reliability, but only half of the total capacity is available. It applies to scenarios where high fault tolerance is required, such as finance. RAID 5 is a storage solution that balances storage performance, data security, and storage costs. To ensure data reliability, RAID 5 uses the distributed redundancy check mode and distributes parity data to member drives. If a drive in a RAID 5 array is faulty, data on the failed drive can be rebuilt from the data on other member drives in the array. RAID 5 can be used to process a large or small amount of data. It features high speed, large capacity, and fault tolerance distribution. RAID6, compared with RAID 5, RAID 6 adds a second independent parity block. In RAID 6, two independent parity systems use different algorithms to ensure high reliability. Data processing is not affected even if two hard drives fail at the same time. However, RAID 6 requires larger drive space for storing parity information and has worse "write hole" effect compared with RAID 5. Therefore, RAID 6 provides lower write performance than RAID 5. For details, please check the Huawei V6 Server RAID Controller Card User Guide 03: https://support.huawei.com/enterprise/en/doc/EDOC1100173718/d68bd984/raid-6 Hope this helps! |
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